Mercurial > dropbear
diff libtomcrypt/changes @ 285:1b9e69c058d2
propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
to branch 'au.asn.ucc.matt.dropbear' (head fdf4a7a3b97ae5046139915de7e40399cceb2c01)
| author | Matt Johnston <matt@ucc.asn.au> |
|---|---|
| date | Wed, 08 Mar 2006 13:23:58 +0000 |
| parents | |
| children | 0cbe8f6dbf9e |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libtomcrypt/changes Wed Mar 08 13:23:58 2006 +0000 @@ -0,0 +1,1326 @@ +June 27th, 2005 +v1.05 + -- Added Technote #6 which covers the current PK compliance. + -- Fixed buffer overflow in OAEP decoder + -- Added CHOICE to the list of ASN.1 types + -- Added UTCTIME to the list of ASN.1 types + -- Added MUTEX locks around descriptor table functions [but not on the functions that are dependent on them] + All functions call *_is_valid() before using a descriptor index which means the respective table must be unlocked before + it can be accessed. However, during the operation [e.g. CCM] if the descriptor has been altered the results will be + undefined. + -- Minor updates to the manual to reflect recent changes + -- Added a catch to for an error that should never come up in rsa_exptmod(). Just being thorough. + +June 15th, 2005 +v1.04 + -- Fixed off by one [bit] error in dsa_make_key() it was too high by one bit [not a security problem just inconsistent] + -- ECC-224 curve was wrong [it was an ok curve just not NIST, so no security flaw just interoperability]. + -- Removed point compression since it slows down ECC ops to save a measly couple bytes. + This makes the ecc export format incompatible with 1.03 [it shouldn't change in the future] + -- Removed ECC-160 from timing and added the other curves + +June 9th, 2005 +v1.03 + -- Users may want to note that on a P4/GCC3.4 platform "-fno-regmove" greatly accelerates the ciphers/hashes. + -------------------------------------------------------------------------------------------------------------- + -- Made it install the testing library in the icc/static makefiles + -- Found bug in ccm_memory.c which would fail to compile when LTC_CLEAN_STACK was enabled + -- Simon Johnson proposed I do a fully automated test suite. Hence "testme.sh" was born + -- Added LTC_NO_TEST which forces test vectors off (regardless of what tomcrypt_custom.h has) + -- Added LTC_NO_TABLES which disables large tables (where possible, regardless of what tomcrypt_custom.h has) + -- New test script found a bug in twofish.c when TABLES was disabled. Yeah testing! + -- Added a LTC_FAST specific test to the testing software. + -- Updated test driver to actually halt on errors and just print them out (useful for say... automated testing...) + -- Added bounds checking to Pelican MAC + -- Added BIT and OCTET STRING to the ASN.1 side of things. + -- Pekka Riikonen pointed out that my ctr_start() function should accept the counter mode. + -- Cleaned up warnings in testprof + -- Removed redundant mu and point mapping in ecc_verify_hash() so it should be a bit faster now + -- Pekka pointed out that the AES key structure was using 32 bytes more than it ought to. + -- Added quick defines to remove entire classes of algorithms. This makes it easier if you want to build with just + one algorithm (say AES or SHA-256). Defines are LTC_NO_CIPHERS, LTC_NO_MODES, LTC_NO_HASHES, LTC_NO_MACS, + LTC_NO_PRNGS, LTC_NO_PK, LTC_NO_PKCS + -- As part of the move for ECC to X9.62 I've changed the signature algorithm to EC DSA. No API changes. + -- Pekka helped me clean up the PKCS #1 v2.1 [OAEP/PSS] code + -- Wrote new DER SEQUENCE coder/decoder + -- RSA, DSA and ECDSA now use the DER SEQUENCE code (saves a lot of code!) + -- DSA output is now a DER SEQUENCE (so not compatible with previous releases). + -- Added Technote #5 which shows how to build LTC on an AMD64 to have a variety of algorithms in only ~80KB of code. + -- Changed temp variable in LOAD/STORE macros to "ulong32" for 32-bit ops. Makes it safer on Big endian platforms + -- Added INSTALL_GROUP and INSTALL_USER which you can specify on the build to override the default USER/GROUP the library + is to be installed as + -- Removed "testprof" from the default build. + -- Added IA5, NULL and Object Identifier to the list of ASN.1 DER supported types + -- The "no_oops" target (part of zipup) now scans for non-cvs files. This helps prevent temp/scratch files from appearing in releases ;-) + -- Added DERs for missing hashes, but just the OID not the PKCS #1 v1.5 additions. + -- Removed PKCS #1 v1.5 from the tree since it's taking up space and you ought to use v2.1 anyways + -- Kevin Kenny pointed out a few stray // comments + -- INTEGER code properly supports negatives and zero padding [Pekka!] + -- Sorted asn1/der/ directory ... less of a mess now ;-) + -- Added PRINTABLE STRING type + -- Removed ECC-160 as it wasn't a standard curve + -- Made ecc_shared_secret() ANSI X9.63 compliant + -- Changed "printf" to "fprintf(stderr, " in the testbench... ;-) + -- Optimized the GCM table creation. On 1KB packets [with key switching] the new GCM is 12.7x faster than before. + -- Changed OID representation for hashes to be just a list of unsigned longs (so you can compare against them nicely after decoding a sequence) + -- ECC code now uses Montgomery reduction ... it's even faster [ECC-256 make key down from 37.4M to 4.6M cycles on an Athlon64] + -- Added SHORT_INTEGER so users can easily store DER encoded INTEGER types without using the bignum math library + -- Fixed OMAC code so that with LTC_FAST it doesn't require that LTC_FAST_TYPE divides 16 [it has to divide the block size instead] + -- ECC key export is now a simple [and documented] SEQUENCE, the "encrypt_key" also uses a new SEQUENCE format. + -- Thanks goes to the following testers + Michael Brown - Solaris 10/uSPARCII + Richard Outerbridge - MacOS + Martin Carpenter - Solaris 8/uSPARCII [Thanks for cleaning up the scripts] + Greg Rose - ... SunOS 5.8/SPARC [... what's with the SPARCS?] + Matt Johnston - MacOS X [Thanks for pointing out GCC 4 problems with -Os] + +April 19th, 2005 +v1.02 + -- Added LTC_TEST support to gcm_test() + -- "pt/ct" can now be NULL in gcm_process() if you are processing zero bytes + -- Optimized GCM by removing the "double copy" handling of the plaintext/aad + -- Richard Outerbridge pointed out that x86_prof won't build on MACOS and that the manual + erroneously refers to "mycrypt" all over the place. Fixed. + +April 17th, 2005 +v1.01 + ** Secure Science Corporation has supported this release cycle by sponsoring the development time taken. Their + continuing support of this project has helped me maintain a steady pace in order to keep LibTomCrypt up to date, + stable and more efficient. + ----------------------------------------------------------------------------------------------------- + -- Updated base64_decode.c so if there are more than 3 '=' signs it would stop parsing + -- Merged in latest mpi that fixed a few bugs here and there + -- Updated OAEP encoder/decoder to catch when the hash output is too large + Cleaned up PSS code too + -- Andy Bontoft fixed a bug in my demos/tests/makefile.msvc ... seems "dsa_test.c" isn't an object + afterall. Thanks. + -- Made invalid ECC key sizes (configuration) not hard fault the program (it returns an error code now) + -- SAFER has been re-enabled after I was pointed to http://www.ciphersbyritter.com/NEWS2/95032301.HTM + [Mark Kotiaho] + -- Added CCM mode to the encauth list (now has EAX, OCB and CCM, c'est un treo magnifique!) + -- Added missing ASN.1 header to the RSA keys ... oops... now the rsa_export/import are FULLY compatible + with other libs like OpenSSL (comment: Test vectors would go a long way RSA...) + -- Manually merged in fix to the prime_random_ex() LTM function that ensures the 2nd MSB is set properly. Now + When you say "I want a 1024/8 byte RSA key" the MSB bit of the modulus is set as expected. Note I generally + don't view this as a "huge issue" but it's just one less nit to worry about. [Bryan Klisch] + -- A new CVS has been setup on my Athlon64 box... if you want developer access send me an email (and at this point the email would have to be awesome). + -- Updated API for ECB and CBC shell code. Now can process N whole blocks in one call (like $DEITY intended) + -- Introduced a new "hardware accel" framework that can be used to speed up cipher ECB, CBC and CTR mode + calls. Later on dependent code (e.g. OMAC, CCM) will be re-written to use the generic cbc/ctr functions. But now + if you [say] call ctr_encrypt() with a cipher descriptor that has hardware CTR it will automatically + be used (e.g. no code rewrites) + -- Now ships with 20% more love. + -- x86_prof now uses ECB shell code (hint: accelerators) and outputs cycles per BLOCK not byte. This will make it a bit + easier to compare hardware vs. software cipher implementations. It also emits timings for CBC and CTR modes + -- [Peter LaDow] fixed a typo w.r.t. XREALLOC macro (spelling counts kids!) + -- Fixed bug with __x86_64__ where ROL64/ROR64 with LTC_NO_ROLC would be the 32-bit versions instead... + -- Shipping with preliminary GCM code (disabled). It's buggy (stack overflow hidden somewhere). If anyone can spot it let me know. + -- Added Pelican MAC [it's an AES based fast MAC] to the list of supported MACs + -- Added LTC_FAST [and you can disable by defining LTC_NO_FAST] so that CBC and CTR mode XOR whole words [e.g. 32 or 64 bits] at a time + instead of one byte. On my AMD64 this reduced the overhead for AES-128-CBC from 4.56 cycles/byte to around 1 cycle/byte. This requires + that you either allow unaligned read/writes [e.g. x86_32/x86_64] or align all your data. It won't go out of it's way to ensure + aligned access. Only enabled for x86_* platforms by default since they allow unaligned read/writes. + -- Added LTC_FAST support to PMAC (drops the cycle/byte by about 9 cycles on my AMD64) [note: I later rewrote this prior to release] + -- Updated "profiled" target to work with the new directory layout + -- Added [demo only] optimized RC5-CTR code to x86_prof demo to show off how to make an accelerator + [This has been removed prior to release... It may re-appear later] + -- Added CCM acelerator callbacks to the list [now supports ECB, CTR, CBC and now CCM]. + -- Added chapter to manual about accelerators (you know you want it) + -- Added "bswap" optimizations to x86 LOAD/STORE with big endian. Can be disabled by defining LTC_NO_BSWAP + -- LTC_NO_ASM is now the official "disable all non-portable stuff" macro. When defined it will make the code endian-neutral, + disable any form of ASM and disable LTC_FAST load/stores. Essentially build the library with this defined if you're having + trouble building the library (old GCCs for instance dislike the ROLc macro) + -- Added tomcrypt_mac.h and moved MAC/encMAC functions from tomcrypt_hash.h into it + -- Added "done" function to ciphers and the five chaining modes [and things like omac/pmac/etc] + -- Changed install group to "wheel" from "root". + -- Replaced // comments with /**/ so it will build on older UNIX-like platforms + -- x86_prof builds and runs with IntelCC fine now + -- Added "stest" build to intel CC to test static linked from within the dir (so you don't have to install to test) + -- Moved testing/benchmark into testprof directory and build it as part of the build. Now you can link against libtomcrypt_prof.a to get + testing info (hint: hardware developers ;-) ) + -- Added CCM to tv_gen + -- Added demos to MSVC makefile + -- Removed -funroll-all-loops from GCC makefile and replaced with -funroll-loops which is a bit more sane (P4 ain't got much cache for the IDATA) + -- Fixed GCM prior to release and re-enabled it. It has not been optimized but it does conform when compiled with optimizations. + -- I've since optimized GCM and CCM. They're close in speed but GCM is more flexible imho (though EAX is more flexible than both) + -- For kicks I optimized the ECC code to use projective points. Gets between 3.21x (Prescott P4) to 4.53x (AMD64) times faster than before at 160-bit keys and the + speedup grows as the keysize grows. Basically removing most practical reasons to "not use the ECC code". Enjoy. + -- Added LTC_FAST support to OMAC/PMAC and doubled it's speed on my amd64 [faster on the P4 too I guess] + -- Added GCM to tv_gen + -- Removed "makefile.cygwin_dll" as it's not really used by anyone and not worth the effort (hell I hardly maintain the MSVC makefiles ...) + -- Updated a few files in the "misc" directory to have correct @file comments for doxygen + -- Removed "profile" target since it was slower anyways (go figure...) + +December 31st, 2004 +v1.00 + -- Added "r,s == 0" check to dsa_verify_hash() + -- Added "multi block" helpers for hash, hmac, pmac and omac routines so you can process multiple non-adjacent + blocks of data with one call (added demos/multi.c to make sure they work) + -- Note these are not documented but they do have doxygen comments inside them + -- Also I don't use them in other functions (like pkcs_5_2()) because I didn't have the time. Job for the new LTC maintainer ;-) + -- Added tweaked Anubis test vectors and made it default (undefined ANUBIS_TWEAK to get original Anubis) + -- Merged in fix for mp_prime_random_ex() to deal with MSB and LSB "bugs" + -- Removed tim_exptmod() completely, updated several RSA functions (notably v15 and the decrypt/verify) so they + don't require a prng now + -- This release brought to you by the fine tunes of Macy Gray. We miss you. + +December 23rd, 2004 +v1.00rc1 + -- Renamed "mycrypt_*" to "tomcrypt_*" to be more specific and professional + Now just include "tomcrypt.h" instead of "mycrypt.h" to get LTC ;-) + -- Cleaned up makefiles to ensure all headers are correctly installed + -- Added "rotate by constant" macros for portable, x86-32 and x86-64 + You can disable this new code with LTC_NO_ROLC which is useful for older GCCs + -- Cleaned up detection of x86-64 so it works for ROL/ROR macros + -- Fixed rsa_import() so that it would detect multi-prime RSA keys and error appropriately + -- Sorted the source files by category and updated the makefiles appropriately + -- Added LTC_DER define so you can trim out DER code if not required + -- Fixed up RSA's decrypt functions changing "res" to "stat" to be more in sync + with the signature variables nomenclature. (no code change just renamed the arguments) + -- Removed all labels starting with __ and replaced with LBL_ to avoid namespace conflicts (Randy Howard) + -- Merged in LTM fix to mp_prime_random_ex() which zap'ed the most significant byte if the bit size + requested was a multiple of eight. + -- Made RSA_TIMING off by default as it's not terribly useful [and likely to be deprecated] + -- Renamed SMALL_CODE, CLEAN_STACK and NO_FILE to have a LTC_ prefix to avoid namespace collisions + with other programs. e.g. SMALL_CODE => LTC_SMALL_CODE + -- Zed Shaw pointed out that on certain systems installing libs as "root" isn't possible as the super-user + is not root. Now the makefiles allow this to be changed easily. + -- Renamed "struct _*_descriptor" to "struct ltc_*_descriptor" to avoid using a leading _ + Also renamed _ARGCHK to LTC_ARGCHK + -- Zed Shaw pointed out that I still defined the prng structs in tomcrypt_prng.h even if they + weren't defined. This made undef'ing FORTUNA break the build. + -- Added LTC_NO_ASM to disable inline asm macros [ROL/ROR/etc] + -- Changed RSA decrypt functions to change the output length variable name from "keylen" to "outlen" to make + it more consistent. + -- Added the 64-bit Khazad block cipher [NESSIE] + -- Added the 128-bit Anubis block cipher [with key support for 128...320 bit keys] [NESSIE] + -- Changes to several MAC functions to rename input arguments to more sensible names + -- Removed FAST_PK support from dh_sys.c + -- Declared deskey() from des.c as static instead of a global + -- Added pretty much all practical GCC warning tests to the GCC [related] makefiles. These additional + warnings can easily be disabled for those with older copies of GCC [or even non GNU cc's] + -- Added doxygen @ tags to the code... phew that was a hell of a lot of [repetitive] work + -- Also added pre-configured Doxygen script. + -- Cleaned up quite a few functions [ciphers, pk, etc] to make the parameters naming style consistent + E.g. ciphers keys are called "skey" consistently now. The input to PK encryption is called "in", etc. + These changes require no code changes on the behalf of developers fortunately + -- Started a SAFER+ optimizer [does encrypt only] which shaves a good 30 or so cycles/byte on my AMD64 + at an expense of huge code. It's in notes/etc/saferp_optimizer.c + -- DSA sign/verify now uses DER encoded output/inputs and no LTC style headers. + -- Matt Johnston found a missing semi-colon in mp_exptmod(). Fix has been merged in. + +October 29th, 2004 +v0.99 -- Merged in the latest version of LTM which includes all of the recent bug fixes + -- Deprecated LTMSSE and removed it (to be replaced with TFM later on) + -- Stefan Arentz pointed out that mp_s_rmap should be extern + -- Kristian Gj�steen pointed out that there are typos in the + "test" makefile and minor issues in Yarrow and Sober [just cosmetics really] + -- Matthew P. Cashdollar pointed out that "export" is a C++ keyword + so changed the PRNG api to use "pexport" and "pimport" + -- Updated "hashsum" demo so it builds ;-) + -- Added automatic support for x86-64 (will configure for 64-bit little endian automagically) + -- Zhi Chen pointed out a bug in rsa_exptmod which would leak memory on error. + -- Made hash functions "init" return an int. slight change to API ;-( + -- Added "CHC" mode which turns any cipher into a hash the other LTC functions can use + -- Added CHC mode stuff to demos such as tv_gen and hashsum + -- Added "makefile.shared" which builds and installs shared/static object copies + of the library. + -- Added DER for bignum support + -- RSA is now fully joy. rsa_export/rsa_import use PKCS #1 encodings and should be + compatible with other crypto libs that use the format. + -- Added support for x86-64 for the ROL/ROR macros + -- Changed the DLL and SO makefiles to optimize for speed, commented SMALL_CODE in + mycrypt_custom.h and added -DSMALL_CODE to the default makefile + -- Updated primality testing code so it does a minimum of 5 tests [of Miller-Rabin] + (AFAIK not a security fix, just warm fuzzies) + -- Minor updates to the OMAC code (additional __ARGCHK and removed printf from omac_test... oops!) + -- Update build and configuration info which was really really really out of date. (Chapter 14) + ++ Minor update, switch RSA to use the PKCS style CRT + +August 6th, 2004 +v0.98 -- Update to hmac_init to free all allocated memory on error + -- Update to PRNG API to fix import/export functions of Fortuna and Yarrow + -- Added test functions to PRNG api, RC4 now conforms ;-) [was a minor issue] + -- Added the SOBER-128 PRNG based off of code donated by Greg Rose. + -- Added Tech Note #4 [notes/tech0004.txt] + -- Changed RC4 back [due to request]. It will now XOR the output so you can use it like + a stream cipher easily. + -- Update Fortuna's export() to emit a hash of each pool. This means that the accumulated + entropy that was spread over all the pools isn't entirely lost when you export/import. + -- Zhi Chen suggested a comment for rsa_encrypt_key() to let users know [easily] that it was + PKCS #1 v2.0 padding. (updated other rsa_* functions) + -- Cleaned up Noekeon to remove unrolling [wasn't required, was messy and actually slower with GCC/ICC] + -- Updated RC4 so that when you feed it >256 bytes of entropy it quietly ignores additional + bytes. Also removed the % from the key setup to speed it up a bit. + -- Added cipher/hash/prng tests to x86_prof to help catch bugs while testing + -- Made the PRNG "done" return int, fixed sprng_done to not require prng* to be non-null + -- Spruced up mycrypt_custom.h to trap more errors and also help prevent LTMSSE from being defined + on non-i386 platforms by accident. + -- Added RSA/ECC/DH speed tests to x86_prof and cleaned it up to build with zero warnings + -- Changed Fortuna to count only entropy [not the 2 byte header] added to pool[0] into the + reseed mechanism. + -- Added "export_size" member to prng_descriptor tables so you can know in advance the size of + the exported state for any given PRNG. + -- Ported over patch on LTM 0.30 [not ready to release LTM 0.31] that fixes bug in mp_mul()/mp_div() + that used to result in negative zeroes when you multiplied zero by a negative integer. + (patch due to "Wolfgang Ehrhardt" <[email protected]>) + -- Fixed rsa_*decrypt_key() and rsa_*verify_hash() to default to invalid "stat" or "res". This way + if any of the higher level functions fail [before you get to the padding] the result will be in + a known state]. Applied to both v2 and v1.5 padding helpers. + -- Added MACs to x86_prof + -- Fixed up "warnings" in x86_prof and tv_gen + -- Added a "profiled" target back [for GCC 3.4 and ICC v8]. Doesn't seem to help but might be worth + tinkering with. + -- Beefed up load/store test in demos/test + + ++ New note, in order to use the optimized LOAD/STORE macros your platform + must support unaligned 32/64 bit load/stores. The x86s support this + but some [ARM for instance] do not. If your platform cannot perform + unaligned operations you must use the endian neutral code which is safe for + any sort of platform. + +July 23rd, 2004 +v0.97b -- Added PKCS #1 v1.5 RSA encrypt/sign helpers (like rsa_sign_hash, etc...) + -- Added missing prng check to rsa_decrypt_key() [not critical as I don't use + descriptors directly in that function] + -- Merged in LTM-SSE, define LTMSSE before you build and you will get SSE2 optimized math ;-) + (roughly 3x faster on a P4 Northwood). By default it will compile as ISO C portable + code (when LTMSSE is undefined). + -- Fixed bug in ltc_tommath.h where I had the kara/toom cutoffs not marked as ``extern'' + Thanks to "Stefan Arentz" <stefan at organicnetwork.net> + -- Steven Dake <[email protected]> and Richard Amacker <[email protected]> submitted patches to + fix pkcs_5_2(). It now matches the output of another crypto library. Whoops... hehehe + -- Updated PRNG api. Added Fortuna PRNG to the list of supported PRNGs + -- Fixed up the descriptor tables since globals are automatically zero'ed on startup. + -- Changed RC4 to store it's output. If you want to encrypt with RC4 + you'll have to do the XOR yourself. + -- Fixed buffer overflows/overruns in the HMAC code. + + ++ API change for the PRNGs there now is a done() function per PRNG. You + should call it when you are done with a prng state. So far it's + not absolutely required (won't cause problems) but is a good idea to + start. + + +June 23rd, 2004 +v0.97a ++ Fixed several potentially crippling bugs... [read on] + -- Fixed bug in OAEP decoder that would incorrectly report + buffer overflows. [Zhi Chen] + -- Fixed headers which had various C++ missing [extern "C"]'s + -- Added "extern" to sha384_desc descriptor which I removed by mistake + -- Fixed bugs in ENDIAN_BIG macros using the wrong byte order [Matt Johnston] + -- Updated tiger.c and des.c to not shadow "round" which is intrinsic on + some C compilers. + -- Updated demos/test/rsa_test.c to test the RSA functionality better + ++ This update has been tested with GCC [v3.3.3], ICC [v8] and MSVC [v6+SP6] + all on a x86 P4 [GCC/ICC tested in Gentoo Linux, MSVC in WinXP] + ++ Outcome: The bug Zhi Chen pointed out has been fixed. So have the bugs + that Matt Johnston found. + +June 19th, 2004 +v0.97 -- Removed spurious unused files [arrg!] + -- Patched buffer overflow in tim_exptmod() + -- Fixed buffer overrun bug in pkcs_1_v15_es_decode() + -- Reduced stack usage in PKCS #1 v2.0 padding functions (by several KBs) + -- Removed useless extern's that were an artifact from the project start... ;-) + -- Replaced memcpy/memset with XMEMCPY and XMEMSET for greater flexibility + -- fixed bugs in hmac_done()/hmac_init()/[various others()] where I didn't trap errors + -- Reduced stack usage in OMAC/PMAC/HMAC/EAX/OCB/PKCS#5 by mallocing any significant sized + arrays (e.g. > 100 bytes or so). Only in non-critical functions (e.g. eax_init()) + -- "Zhi Chen" <[email protected]> pointed out that rsa_decrypt_key() requires + an incorrect output size (too large). Fixed. + -- Added a "pretty" target to the GCC makefile. Requires PERL. It is NEAT! + -- Minor updates to ch1 of the manual. + -- Cleaned up the indentation and added comments to rsa_make_key(), rsa_exptmod() and + rsa_verify_hash() + -- Updated makefile.icc so the "install" target would work ;-) + -- Removed demos/test.c [deprecated from demos/test/test.c] + -- Changed MAXBLOCKSIZE from 128 to 64 to reflect the true size... + +May 30th, 2004 +v0.96 -- Removed GF and Keyring code + -- Extended OAEP decoder to distinguish better [and use a more uniform API] + -- Changed PSS/OAEP API slightly to be more consistent with other PK functions (order of arguments) + -- rsa_exptmod() now pads with leading zeroes as per I2OSP. + -- added error checking to yarrow code + -- pointed out that tommath.h from this distro will overwrite tommath.h + from libtommath. I changed this to ltc_tommath.h to avoid any such problems. + -- Fixed bug in PSS encoder/decoder that didn't handle the MSB properly + -- refactored AES, now sports an "encrypt only" descriptor which uses half as much code space. + -- modded Yarrow to try and use refactored AES code and added WHIRLPOOL support (d'oh) ;-) + -- updated ECB, OCB and CBC decrypt functions to detect when "encrypt only" descriptor is used. + -- replaced old RSA code with new code that uses PKCS #1 v2.0 padding + -- replaced old test harness with new over-engineer'ed one in /demos/test/ + -- updated cbc/cfb/ofb/ctr code with setiv/getiv functions to change/read the IV without re-keying. + -- Added PKCS #1 v1.5 RSA encryption and signature padding routines + -- Added DER OID's to most hash descriptors (as many as I could find) + -- modded rsa_exptmod() to use timing-resilient tim_exptmod() when doing private key operations + added #define RSA_TIMING which can turn on/off this feature. + -- No more config.pl so please just read mycrypt_custom.h for build-time tweaks + -- Small update to rand_prime() + -- Updated sha1, md5 and sha256 so they are smaller when SMALL_CODE is defined. If you want speed though, + you're going to have to undefine SMALL_CODE ;-) + -- Worked over AES so that it's even smaller now [in both modes]. + +May 12th, 2004 +v0.95 -- Optimized AES and WHIRLPOOL for SMALL_CODE by taking advantage of the fact + the transforms are circulant. AES dropped 5KB and WHIRLPOOL dropped 13KB + using the default build options on the x86. + -- Updated eax so the eax_done() would clear the state [like hmac,pmac,ocb] when + CLEAN_STACK has been defined. + -- added LTC_TEST support to rmd160 + -- updates to mycrypt_pk.h + -- updated rand_prime() to faciliate making RSA composites + -- DSA/RSA now makes composites of the exact size desired. + -- Refactored quite a bit of the code, fewer functions per C file + -- cleaned up the makefiles to organize the objects logically + -- added ICC makefile along with "profiled" targets for both GNU and ICC compilers + -- Marked functions for removal before v1.00 see PLAN for more information + -- GCC 3.4.0 tested and seems to work + -- Added PKCS #5 support + -- Fixed typo in comment header of .C files ;-) + -- Added PKCS #1 OAEP and PSS support. + +Feb 20th, 2004 +v0.94 -- removed unused variables from ocb.c and fixed it to match known test vectors. + -- Added PMAC support, minor changes to OMAC/EAX code [I think....] + -- Teamed up with Brian Gladman. His code verifies against my vectors and my code + verifies against his test vectors. Hazaa for co-operation! + -- Various small changes (added missing ARGCHKs and cleaned up indentation) + -- Optimization to base64, removed unused variable "c" + -- Added base64 gen to demos/tv_gen.c + -- Fix to demos/x86_prof.c to correctly identify the i386 architecture... weird... + -- Fixed up all of the PK code by adding missing error checking, removed "res" variables, + shrunk some stack variables, removed non-required stack variables and added proper + error conversion from MPI to LTC codes. I also spotted a few "off by one" error + checking which could have been used to force the code to read past the end of + the buffer (in theory, haven't checked if it would work) by a few bytes. + -- Added checks to OUTPUT_BIGNUM so the *_export() functions cannot overflow the output and I + also modded it so it stores in the output provided to the function (that is not on + the local stack) which saves memory and time. + -- Made SAFER default to disabled for now (plans are to cleanhouse write an implementation later) + -- Added the 512-bit one-way hash WHIRLPOOL which clocks in at 138 cycles per byte on my + Athlon XP [for comparison, SHA-512 clocks in at 77 cycles per byte]. This code uses the + teams new sbox design (not the original NESSIE one). + + +Jan 25th, 2004 +v0.93 -- [note: deleted v0.93 changes by accident... recreating from memory...] + -- Fix to RC2 to not deference pointer before ARGCHK + -- Fix to NOEKEON to match published test vectors as well as cleaned up the code a bit + -- Optimized Twofish [down to 28 cycles/byte on my box] and Blowfish + -- Fix to OMAC to test cipher block size first [prevents wasting any time] + -- Added more OMAC test vectors + -- Added EAX Encrypt+Authenticate support + -- Fix to DSA to check return of a few LTM functions I forgot [mp_to_unsigned_bin] + -- Added common headers to all C files + -- CTR mode supports big and little [default] endian counters now. + -- fix to find_cipher_any() so that it can handle a fragmented cipher_descriptor table. + -- added find_hash_any() akin to find_cipher_any(). + -- Added EAX code to demos/tv_gen.c Hazaa! + -- Removed SONY defines and files from codebase. + -- Added OCB support [patents be damned] and to demos/tv_gen.c + -- Merge all of the INPUT/OUTPUT BIGNUM macros (less toc) into mycrypt_pk.h + -- Made appropriate changes to the debug string in crypt.c + +Dec 24th, 2003 +v0.92 -- Updated the config.pl script so the options have more details. + -- Updated demos/tv_gen to include RIPEMD hashes + -- Updated Twofish so when TWOFISH_ALL_TABLES is defined a pre-computed RS table + is included [speedup: slight, about 4k cycles on my Athlon]. + -- Re-wrote the twofish large key generation [the four 8x32 key dependent tables]. Now about twice as fast. + With both optimizations [e.g. TWOFISH_ALL_TABLES defined] a 128-bit Twofish key can now be scheduled + in 26,000 cycles on my Athlon XP [as opposed to 49,000 before] when optimized for size. + -- config.pl has been updated so rmd128.o and rmd160.o are objects included in the build [oops] + -- Andrew Mann found a bug in rsa_exptmod() which wouldn't indicate if the wrong type of key was specified + (e.g. not PK_PRIVATE or PK_PUBLIC) + -- Fixed up demos/x86_prof so it sorts the output now :-) + -- The project is now powered by radioactive rubber pants. + -- Fixed dh_encrypt_key() so if you pass it a hash with a smaller output than the input key it + will return CRYPT_INVALID_HASH [to match what ecc_encrypt_key() will do] + -- Merge the store/encrypt key part of ecc_encrypt_key() as per dh_encrypt_key() [can you guess what I'm upto?] + -- Massive updates to the prime generation code. I use the LTM random prime functions [and provide a nice + interface between the LTC PRNG's and the LTM generic prng prototype]. I also use a variable number of tests + depending on the input size. This nicely speeds up most prime generation/testing within the library. + -- Added SHA-224 to the list of hashes. + -- Made HMAC test vectors constant and static [takes ROM space instead of RAM] + -- This release was brought to you by the letter P which stands for Patent Infringement. + -- Added generic HASH_PROCESS macro to mycrypt_hash.h which simplifies the hash "process" functions + I also optimized the compression functions of all but MD2 to not perform input copies when avoidable. + -- Removed the division from the Blowfish setup function [dropped 3k cycles on my Athlon] + -- Added stack cleaning to rijndael, cast5 so now all ciphers have CLEAN_STACK code. + -- Added Skipjack to the list of ciphers [made appropriate changes to demos/test.c, demos/tv_gen.c and + demos/x86_prof.c] + -- Added mechanical testing to cipher test vector routines. Now it encrypts 1000 times, then decrypts and + compares. Any fault (e.g. bug in code, compiler) in the routines is likely to show through. Doesn't + stress test the key gen though... + -- Matt Johnson found a bug in the blowfish.c apparently I was out of my mind and put twofish defines in there + The code now builds with any config. Thanks. + -- Added OMAC1 Message Authentication Code support to the library. + -- Re-prototyped the hash "process" and "done" to prevent buffer overflows [which don't seem easy to exploit]. + Updated HMAC code to use them too. Hazaa! + -- Fixed bug in ECC code which wouldn't do an _ARGCHK on stat in ecc_verify_hash(). + -- Fixed [temp fix] bug in all PK where the OUTPUT_BIGNUM macros would not trap errors on the to_unsigned_bin + conversion [now returns CRYPT_MEM, will fix it up better later] + -- Added DSA to the list of supported PK algorithms. + -- Fixed up various ciphers to &255 the input key bytes where required [e.g. where used to index a table] to prevent + problems on platforms where CHAR_BIT != 8 + -- Merged in LibTomMath v0.28 + -- Updated demos/x86_prof.c to use Yarrow during the key sched testing [was horribly slow on platforms with blockable + /dev/random]. + -- Added OMAC/HMAC tests to demos/tv_gen and I now store the output of this in notes/ + -- Fixed a bug in config.pl that wouldn't have TWOFISH_TABLES defined by default (too many commas on the line) + -- Fixed bug in hmac_done(). Apparently FIPS-198 [HMAC] specifies that the output can be truncated. My code + would not support that (does now just like the new OMAC code). + -- Removed "hashsize" from hmac_state as it wasn't being used. + -- Made demos/test.c stop if OMAC or HMAC tests fail (instead of just printing a failed message and keep going). + -- Updated notes/tech0003.txt to take into account the existence of Skipjack [also I fixed a few typos]. + -- Slight changes to Noekeon, with SMALL_CODE undefined it uses a fully unrolled version. Dropped +10 cycles/byte + on my Athlon (35 cycles per byte or 410.4Mbit/sec at 1795Mhz) + -- Added _ARGCHK() calls to is_prime() for the two input pointers. + +Sept 25th, 2003 +v0.91 -- HMAC fix of 0.90 was incorrect for keys larger than the block size of the hash. + -- Added error CRYPT_FILE_NOTFOUND for the file [hmac/hash] routines. + -- Added RIPEMD hashes to the hashsum demo. + -- Added hashsum demo to MSVC makefile. + -- Added RMD160 to the x86_prof demo [oops] + -- Merged in LibTomMath-0.27 with a patch to mp_shrink() that will be in LibTomMath-0.28 + Fixes another potential memory leak. + +Sept 7th, 2003 +v0.90 -- new ROL/ROR for x86 GCC + -- Jochen Katz submitted a patch to the makefile to prevent "make" from making the .a library + when not required. + == By default the KR code is not enabled [it's only a demo anyways!] + -- changed the "buf" in ecc_make_key from 4KB to 128 bytes [since the largest key is 65 bytes] + -- hmac_done() now requires you pass it the size of the destination buffer to prevent + buffer overflows. (API CHANGE) + -- hmac/hash filebased routines now return CRYPT_NOP if NO_FILE is defined. + -- I've removed the primes from dh.c and replaced them with DR safe primes suitable for the default + configuration of LibTomMath. Check out these comparisons on a 1.3Ghz Athlon XP, optimized for size, + +768-bit, 4 vs. 10 +1024-bit, 8 vs. 18 +1280-bit, 12 vs. 34 +1536-bit, 20 vs. 56 +1792-bit 28 vs. 88 +2048-bit, 40 vs. 124 +2560-bit, 71 vs. 234 +3072-bit, 113 vs. 386 +4096-bit, 283 vs. 916 + + Times are all in milliseconds for key generation. New primes times on the left. This makes the code binary + incompatible with previous releases. However, this addition is long overdue as LibTomMath has supported DR + reductions for quite some time. + -- Added RIPE-MD 128 and 160 to the list of supported hashes [10 in total]. + -- The project has been released as public domain. TDCAL no longer applies. + +July 15th, 2003 +v0.89 -- Fix a bug in bits.c which would prevent it from building with msvc + -- Merged in LibTomMath v0.24 [and I used the alloc/free macros this time!] + -- Removed the LTC version of next_prime() and replaced it with a call to the + mp_prime_next_prime() from LibTomMath + -- reverted bits.c to the 0.86 copy since the new one doesn't build in MSVC + or cygwin. + +Jul 10th, 2003 +v0.88 -- Sped up CAST5 key schedule for MSVC + -- added "ulong32" which allows people on 64-bit platforms to force the 32-bit tables in + ciphers like blowfish and AES to be 32-bits. E.g. when unsigned long is 64-bits. + -- Optimized the SAFER-SK64, SAFER-SK128, SAFER+, RC5 and RC6 key schedule [big time!] + -- Optimized SHA-1 and SHA-256 quite a bit too. + -- Fixed up the makefile to use -fomit-frame-pointer more liberally + -- Added tv_gen program which makes test vectors for ciphers/hashes + -- Merged in LibTomMath v0.22 + +Jun 19th, 2003 +v0.87 -- Many MSVC optimizations to the code base + -- Improved the AES and Twofish key schedule [faster, more constant time] + -- Tons of optimizations here and there. + +Jun 15th, 2003 +v0.86 -- Fixed up AES to workaround MSVC optimizer bug + -- Merged in fresh LTM base [based on v0.20] so there are no warnings with MSVC + -- Wrote x86_prof which will time the hashes and ciphers downto cycles per byte. + -- Fixed up demos/encrypt to remove serpent_desc from the list + -- Re-enabled MSVC optimizations w00t w00t + -- Replaced "errno" with "err" in all functions that had it so it wouldn't clash + with the global "errno" + -- Removed a set of unused variables from certain functions + -- Removed {#line 0 "..."} stuff from mpi.c to comply with ISO C :-) + +Jun 11th, 2003 +v0.85 -- Swapped in a new AES routine + -- Removed Serpent + -- Added TDCAL policy document + +Jun 1st, 2003 +v0.84 -- Removed a 4KB buffer from rsa_decrypt_key that wasn't being used no more + -- Fixed another potential buffer problem. Not an overflow but could cause the + PK import routines to read past the end of the buffer. + -- Optimized the ECC mulmod more by removing a if condition that will always be false + -- Optimized prime.c to not include a 2nd prime table, removed code from is_prime calls prime + test from LibTomMath now + -- Added LTC_TEST define which when defined will enable the test vector routines [see mycrypt_custom.h] + -- Removed ampi.o from the depends cuz it ain't no not working in *nix with it [routines are in mpi.c now]. + + +Mar 29th, 2003 +v0.83 -- Optimized the ecc_mulmod, it's faster and takes less heap/stack space + -- Fixed a free memory error in ecc_mulmod and del_point which would try to free NULL + -- Fixed two serious bugs in rsa_decrypt_key and rsa_verify_hash that would allow a trivialy + buffer overflow. + -- Fixed a bug in the hmac testing code if you don't register all the hashes it won't return + errors now. + +Mar 15th, 2003 +v0.82 -- Manual updated + -- Added MSVC makefile [back, actually its written from scratch to work with NMAKE] + -- Change to HMAC helper functions API to avoid buffer overflow [source changes] + -- the rsa_encrypt_key was supposed to reject key sizes out of bounds ... + same fix to the rsa_sign_hash + -- Added code to ensure that that chaining mode code (cfb/ofb/ctr/cbc) have valid + structures when being called. E.g. the indexes to the pad/ivs are not out of bounds + -- Cleaned up the DES code and simplified the core desfunc routine. + -- Simplified one of the boolean functions in MD4 + +Jan 16th, 2003 +v0.81 -- Merged in new makefile from Clay Culver and Mike Frysinger + -- Sped up the ECC mulmod() routine by making the word size adapt to the input. Saves a whopping 9 point + operations on 521-bit keys now (translates to about 8ms on my Athlon XP). I also now use barrett reduction + as much as possible. This sped the routine up quite a bit. + -- Fixed a huge flaw in ecc_verify_hash() where it would return CRYPT_OK on error... Now fixed. + -- Fixed up config.pl by fixing an invalid query and the file is saved in non-windows [e.g. not CR/LF] format + (fix due to Mika Bostr�m) + -- Merged in LibTomMath for kicks + -- Changed the build process so that by default "mycrypt_custom.h" is included and provided + The makefile doesn't include any build options anymore + -- Removed the PS2 and VC makefiles. + +Dec 16th, 2002 +v0.80 -- Found a change I made to the MPI that is questionable. Not quite a bug but definately not desired. Had todo + with the digit shifting. In v0.79 I simply truncated without zeroing. It didn't cause problems during my + testing but I fixed it up none the less. + -- Optimized s_mp_mul_dig() from MPI to do a minimal number of passes. + -- Fixed in rsa_exptmod() where I was getting the size of the result. Basically it accomplishes the same thing + but the fixed code is more readable. + -- Fixed slight bug in dh_sign_hash() where the random "k" value was 1 byte shorter than it should have been. I've + also made the #define FAST_PK speed up signatures as well. Essentially FAST_PK tells the DH sub-system to + limit any private exponent to 256-bits. Note that when FAST_PK is defined does not make the library + binary or source incompatible with a copy of the library with it undefined. + -- Removed the DSA code. If you want fast diffie-hellman just define FAST_PK :-) + -- Updated dh_sign_hash()/dh_verify_hash() to export "unsigned" bignums. Saves two bytes but is not binary + compatible with the previous release... sorry! I've performed the same fix to the ecc code as well. + -- Fixed up the PK code to remove all use of mp_toraw() and mp_read_raw() [get all the changes out of the way now] + -- Fixed a bug in the DH code where it missed trapping a few errors if they occurred. + -- Fixed a slight "its-not-a-bug-but-could-be-done-better" bug in the next_prime() function. Essentially it was + testing to ensure that in the loop that searches for the next candidate that the step never grows beyond + 65000. Should have been testing for MP_DIGIT_MAX + -- Spruced up the config.pl script. It now makes a header file "mycrypt_custom.h" which can be included *before* + you include mycrypt.h. This allows you to add libtomcrypt to a project without completely changing your make + system around. Note that you should use the makefile it writes to at least build the library initially. + -- Used splint to check alot of the code out. Tons of minor fixes and explicit casts added. + -- Also made all the internal functions of MPI are now static to avoid poluting the namespace + -- **Notice**: There are no planned future releases for at least a month from the this release date. + +Dec 14th, 2002 +v0.79 -- Change to PK code [binary and source]. I made it so you have to pass the buffer size to the *_decrypt_key and + *_verify_hash functions. This prevents malformed packets from performing buffer overflows. I've also trimmed + the packet header size [by 4 bytes]. + -- Made the test program halt on the first error it occurs. Also made it trap more errors than before. + -- Wrote the first chapter of my new book [DRAFT!], not in this package but check my website! + -- Included a perl script "config.pl" that will make "makefile.out" according to the users needs. + -- Added shell script to look for latest release + -- Merge DH and ECC key defines from mycrypt_cfg.h into the makefiles + -- updated the makefile to use BSD friendly archiving invokations + -- Changed the DH and ECC code to use base64 static key settings [e.g. the primes]. Dropped the code size by 3KB + and is ever-so-slightly faster than before. + -- added "mp_shrink" function to shrink the size of bignums. Specially useful for PK code :-) + -- Added new exptmod function that calculates a^b mod c with fewer multiplies then before [~20% for crypto + sized numbers]. Also added a "low mem" variant that doesn't use more than 20KB [upto 4096 bit nums] of + heap todo the calculation. Both are #define'able controlled + -- Added XREALLOC macro to provide realloc() functionality. + -- Added fix where in rsa_import() if you imported a public key or a non-optimized key it would free the mp_int's + not being used. + -- Fixed potential bug in the ECC code. Only would occur on platforms where char is not eight bits [which isn't + often!] + -- Fixed up the ECC point multiplication, its about 15% faster now + -- While I was at it [since the lib isn't binary backwards compatible anyways] I've fixed the PK export routines + so they export as "unsigned" types saving 1 byte per bignum outputted. Not a lot but heck why not. + +Nov 28th, 2002 +v0.78 -- Made the default ARGCHK macro a function call instead which reduced the code size from 264KB to 239KB. + -- Fixed a bug in the XTEA keysize function which called ARGCHK incorrectly. + -- Added Noekeon block cipher at 2,800 bytes of object code and 345Mbit/sec it is a welcome addition. + -- Made the KR code check if the other PK systems are included [provides error when building otherwise]. + -- Made "aes" an alias for Rijndael via a pre-processor macro. Now you can use "aes_ecb_encrypt", etc... :-) + Thanks to Jean-Luc Cooke for the "buzzword conformance" suggestion. + -- Removed the old PK code entirely (e.g. rsa_sign, dh_encrypt). The *_sign_hash and *_encrypt_key functions + are all that is to remain. + -- **NOTE** Changed the PK *_import (including the keyring) routine to accept a "inlen" parameter. This fixes a + bug where improperly made key packets could result in reading passed the end of the buffer. This means + the code is no longer source compatible but still binary compatible. + -- Fixed a few other minor bugs in the PK import code while I was at it. + +Nov 26th, 2002 +v0.77 -- Updated the XTEA code to use pre-computed keys. With optimizations for speed it achieves 222Mbit/sec + compared to the 121Mbit/sec before. It is 288 bytes bigger than before. + -- Cleaned up some of the ciphers and hashes (coding style, cosmetic changes) + -- Optimized AES slightly for 256-bit keys [only one if statement now, still two for 192-bit keys] + -- Removed most test cases from Blowfish, left three of them there. Makes it smaller and faster to test. + -- Changed the primality routines around. I now use 8 rounds of Rabin-Miller, I use 256 primes in the sieve + step and the "rand_prime" function uses a modified sieve that avoids alot of un-needed bignum work. + -- Fixed a bug in the ECC/DH signatures where the keys "setting" value was not checked for validity. This means + that a invalid value could have caused segfaults, etc... + -- **NOTE** Changed the way the ECC/DH export/import functions work. They are source but not binary compatible + with v0.76. Essentially insteading of exporting the setting index like before I export the key size. Now + if you ever re-configure which key settings are supported the lib will still be able to make use of your + keys. + -- Optimized Blowfish by inlining the round function, unrolling it for four rounds then using a for loop for the + rest. It achieves a rate of 425Mbit/sec with the new code compared to 314Mbit/sec before. The new blowfish + object file is 7,813 bytes compared to 8,663 before and is 850 bytes smaller. So the code is both smaller and + faster! + -- Optimized Twofish as well by inlining the round function. Gets ~400Mbit/sec compared to 280Mbit/sec before + and the code is only 78 bytes larger than the previous copy. + -- Removed SMALL_PRIME_TAB build option. I use the smaller table always. + -- Fixed some mistakes concerning prime generation in the manual. + -- [Note: sizes/speeds are for GCC 3.2 on an x86 Athlon XP @ 1.53Ghz] + +Nov 25th, 2002 +v0.76 -- Updated makefiles a bit more, use "-Os" instead of "-O2" to optimize for size. Got the lib + downto 265KB using GCC 3.2 on my x86 box. + -- Updated the SAFER+, Twofish and Rijndael test vector routine to use the table driven design. + -- Updated all other test vector routines to return as soon as an error is found + -- fixed a bug in the test program where errors in the hash test routines would not be reported + correctly. I found this by temporarily changing one of the bytes of the test vectors. All the + hashes check out [the demos/test.c would still have reported an error, just the wrong one]. + + +Nov 24th, 2002 +v0.75 -- Fixed a flaw in hash_filehandle, it should ARGCHK that the filehandle is not NULL + -- Fixed a bug where in hash_file if the call to hash_filehandle failed the open file would + not be closed. + -- Added more strict rules to build process, starting to weed out "oh this works in GCC" style code + In the next release "-Wconversion" will be enabled which will deal with all implicit casts. + +Nov 22nd, 2002 [later in the day] +v0.74 -- Wrote a small variant of SAFER+ which shaved 50KB off the size of the library on x86 platforms + -- Wrote a build option to remove the PK packet functions [keeps the encrypt_key/sign_hash functions] + -- Wrote a small variant of Rijndael (trimmed 13KB) + -- Trimmed the TIGER/192 hash function a bit + -- Overall the entire lib compiled is 295KB [down from 400KB before] + -- Fixed a few minor oversights in the MSVC makefile + +Nov 22nd, 2002 +v0.73 -- Fixed bug in RC4 code where it could only use 255 byte keys. + -- Fixed bug in yarrow code where it would allow cast5 or md2 to be used with it... + -- Removed the ecc compress/expand points from the global scope. Reduces namespace polution + -- Fixed bug where if you used the SPRNG you couldn't pass NULL as your prng_state which you should be + able todo since the SPRNG has no state... + -- Corrected some oversights in the manual and the examples... + -- By default the GF(2^W) math library is excluded from the build. The source is maintained because I wrote it + and like it :-). This way the built library is a tad smaller + -- the MSVC makefile will now build for a SPACE optimized library rather than TIME optimized. + +Nov 21th, 2002 +v0.72 -- Fixed bug in the prime testing. In the Miller-Rabin test I was raising the base to "N-1" not "r". + The math still worked out fine because in effect it was performing a Fermat test. Tested the new code and it + works properly + -- Fixed some of the code where it was still using the old error syntax + -- Sped up the RSA decrypt/sign routines + -- Optimized the ecc_shared_secret routine to not use so much stack + -- Fixed up the makefile to make releases where the version # is in the file name and directory it will unzip + to + +Nov 19th, 2002 +v0.71 -- HELP TOM. I need tuition for the January semester. Now I don't want to force donations [nor will I ever] + but I really need the help! See my website http://tom.iahu.ca/help_tom.html for more details. Please help + if you can! + -------------------------------------------------------------------------------------------------------------- + -- Officially the library is no longer supported in GCC 3.2 in windows [cygwin]. + In windows you can either use GCC 2.95.3 or try your luck with 3.2 It seems that + "-fomit-frame-pointer" is broken in the windows build [but not the linux x86 build???] + If you simply must use 3.2 then I suggest you limit the optimizations to simply "-O2" + -- Started new error handling API. Similar to the previous except there are more error codes than just + CRYPT_ERROR + -- Added my implementation of the MD2 hash function [despite the errors in the RFC I managed to get it right!] + -- Merged in more changes from Sky Schulz. I have to make mention here that he has been a tremendous help in + getting me motivated to make some much needed updates to the library! + -- Fixed one of the many mistakes in the manual as pointed out by Daniel Richards + -- Fixed a bug in the RC4 code [wasn't setting up the key correctly] + -- Added my implementation of the CAST5 [aka CAST-128] block cipher (conforms...) + -- Fixed numerous bugs in the PK code. Essentially I was "freeing" keys when the import failed. This is neither + required nor a good a idea [double free]. + -- Tom needs a job. + -- Fixed up the test harness as requested by Sky Schulz. Also modifed the timing routines to run for X seconds + and count # of ops performed. This is more suitable than say encrypting 10 million blocks on a slow processor + where it could take minutes! + -- Modified test programs hashsum/encrypt to use the new algorithms and error handling syntax + -- Removed the PKCS code since it was incomplete. In the future I plan on writing a "add-on" library that + provides PKCS support... + -- updated the config system so the #defines are in the makefiles instead of mycrypt_cfg.h + -- Willing to work on an hourly basis for 15$ CDN per hour. + -- updated the test program to not test ciphers not included + -- updated the makefile to make "rsa_sys.c" a dependency of rsa.o [helps develop the code...] + -- fixed numerous failures to detect buffer overflows [minor] in the PK code. + -- fixed the safer [64-bit block version] test routines which didn't check the returns of the setup + function + -- check out my CV at http://tom.iahu.ca/cv.html + -- removed the GBA makefile and code from demos/test.c [not a particularly useful demo...] + -- merged in rudimentary [for testing] PS2 RNG from Sky Schulz + -- merged in PS2 timer code [only shell included due to NDA reasons...] + -- updated HMAC code to return errors where possible + -- Thanks go to Sky Schulz who bought me a RegCode for TextPad [the official editor of libtomcrypt] + +Nov 12th, 2002 +v0.70 -- Updated so you can swap out the default malloc/calloc/free routines at build time with others. (Sky Schulz) + -- Sky Schulz contributed some code towards autodetecting the PS2 in mycrypt_cfg.h + -- Added PS2 makefile contributed by Sky Schulz [see a pattern forming?] + -- Added ability to have no FILE I/O functions at all (see makefile), Sky Schulz.... + -- Added support for substituting out the clock() function (Sky Schulz) + -- Fixed up makefile to include new headers in the HEADERS variable + -- Removed "coin.c" as its not really useful anyways + -- Removed many "debug" printfs that would show up on failures. Basically I wanted to ensure the only output + would be from the developer themselves. + -- Added "rc4.c" a RC4 implementation with a PRNG interface. Since RC4 isn't a block cipher it wouldn't work + too well as a block cipher. + -- Fixed ARGCHK macro usage when ARGTYPE=1 throughout the code + -- updated makefile to make subdirectory properly (Sku Schulz) + -- Started towards new API setup. Instead of checking for "== CRYPT_ERROR" you should check "!= CRYPT_OK" + In future releases functions will return things other than CRYPT_ERROR on error to give more useful + thread safe error reporting. The manual will be updated to reflect this. For this release all + errors are returned as CRYPT_ERROR (except as noted) but in future releases this will change. + -- Removed the zlib branch since its not really required anyways. Makes the package smaller + +Nov 11th, 2002 +v0.69 -- Added ARGCHK (see mycrypt_argchk.h) "arguement checking" to all functions that accept pointers + -- Note I forgot to change the CRYPT version tag in v0.68... fixed now. + +Nov 8th, 2002 +v0.68 -- Fixed flaw in kr_import/kr_export that wasted 4 bytes. Source but not binary compatible with v0.67 + -- Fixed bug in kr_find_name that used memcmp to match strings. Uses strncmp now. + -- kr_clear now sets the pointer to NULL to facilate debugging [e.g. using the keyring after clearing] + -- static functions in _write/_read in keyring.c now check the return of ctr_encrypt/ctr_decrypt. + -- Updated blowfish/rc2/rc5/rc6 keysize() function to not reject keys larger than the biggest key the + respective ciphers can use. + -- Fixed a bug in hashsum demo that would report the hash for files that don't exist! + +Oct 16th, 2002 +v0.67 -- Moved the function prototypes into files mycrypt_*.h. To "install" the lib just copy all the + header files "*.h" from the base of this project into your global include path. + -- Made the OFB/CFB/CTR functions use "unsigned long" for the length instead of "int" + -- Added keyring support for the PK functions + -- ***API CHANGE*** changed the ecc_make_key and dh_make_key to act more like rsa_make_key. Basically + move the first argument to the next to last. + -- Fixed bug in dh_test() that wouldn't test the primality of the order of the sub-group + -- replaced the primes in the DH code with new ones that are larger than the size they are + associated with. That is a 1024-bit DH key will have a 1025-bit prime as the modulus + -- cleaned up all the PK code, changed a bit of the API around [not source compatible with v0.66] + -- major editing of the manual, started Docer program + -- added 160 and 224 bit key settings for ECC. This makes the DH and ECC binary wise incompatible with v0.66 + -- Added an additional check for memory errors in is_prime() and cleaned up prime.c a bit + -- Removed ID_TAG from all files [meh, not a big fan...] + -- Removed unused variable from yarrow state and made AES/SHA256 the default cipher/hash combo + -- Fixed a bug in the Yarrow code that called prng_is_valid instead of cipher_is_valid from yarrow_start() + -- The ECB/CBC/OFB/CFB/CTR wrappers now check that the cipher is valid in the encrypt/decrypt calls + Returns int now instead of void. + +Sept 24th, 2002 +v0.66 -- Updated the /demos/test.c program to time the hashes correctly. Also it uses the yarrow PRNG for all of the + tests meaning its possible to run on RNG less platforms + -- Updated the /demos/hashsum.c program to hash from the standard input + -- Updated the RSA code to make keys a bit quicker [update by Wayne Scott] by not making both primes at the same + time. + -- Dan Kaminsky suggested some cleanups for the code and the MPI config + Code ships in unix LF format by default now too... will still build in MSVC and all... but if you want + to read the stuff you'll have to convert it + -- Changes to the manual to reflect new API [e.g. hash_memory/file have v0.65 prototypes]and some typos fixed + +Sept 20th, 2002 +v0.65 -- Wayne Scott ([email protected]) made a few of suggestions to improve the library. Most + importantly he pointed out the math lib is not really required. He's also tested the lib on 18 + different platforms. According to him with only a few troubles [lack of /dev/random, etc] the + library worked as it was supposed to. You can find the list at + http://www.bitkeeper.com/Products.BitKeeper.Platforms.html + -- Updated the hash_file and hash_memory functions to keep track of the size of the output + -- Wayne Scott updated the demos/test.c file to use the SPRNG less and Yarrow more + -- Modified the mycrypt_cfg.h to autodetect x86-32 machines + +Sept 19th, 2002 +v0.64 -- wrote makefile for the GBA device [and hacked the demos/test.c file to support it conditionally] + -- Fixed error in PK (e.g. ECC, RSA, DH) import functions where I was clobbering the packet error messages + -- fixed more typos in the manual + -- removed all unused variables from the core library (ignore the ID_TAG stuff) + -- added "const char *crypt_build_settings" string which is a build time constant that gives a listing + of all the build time options. Useful for debugging since you can send that to me and I will know what + exactly you had set for the mycrypt_cfg.h file. + -- Added control over endianess. Out of the box it defaults to endianess neutral but you can trivially + configure the library for your platform. Using this I boosted RC5 from 660Mbit/sec to 785Mbit/sec on my + Athlon box. See "mycrypt_cfg.h" for more information. + +Sept 11th, 2002 +v0.63 -- Made hashsum demo output like the original md5sum program + -- Made additions to the examples in the manual (fixed them up a bunch) + -- Merged in the base64 code from Wayne Scott ([email protected]) + +Aug 29th, 2002 +v0.62 -- Added the CLEAN_STACK functionality to several of the hashes I forgot to update. + +Aug 9th, 2002 +v0.61 -- Fixed a bug in the DES code [oops I read something wrong]. + +Aug 8th, 2002 +v0.60 -- Merged in DES code [and wrote 3DES-EDE code based on it] from Dobes V. + +Aug 7th, 2002 +v0.59 -- Fixed a "unsigned long long" bug that caused v0.58 not to build in MSVC. + -- Cleaned up a little in the makefile + -- added code that times the hash functions too in the test program + +Aug 3rd, 2002 +v0.58 -- Added more stack cleaning conditionals throughout the code. + -- corrected some CLEAR_STACK conditionals... should have been CLEAN_STACK + -- Simplified the RSA, DH and ECC encrypt() routines where they use CTR to encode the message + now they only make one call to ctr_encrypt()/ctr_decrypt(). + +Aug 2nd, 2002 +v0.57 -- Fixed a few errors messages in the SAFER code to actually report the correct cipher name. + -- rsa_encrypt() uses the "keysize()" method of the cipher being used to more accurately pick a + key size. By default rsa_encrypt() will choose to use a 256-bit key but the cipher can turn that + down if required. + -- The rsa_exptmod() function will now more reliably detect invalid inputs (e.g. greater than the modulus). + -- The padding method for RSA is more clearly documented. Namely if you want to encrypt/sign something of length + N then your modulus must be of length 1+3N. So to sign a message with say SHA-384 [48 bytes] you need a + 145 byte (1160 bits) modulus. This is all in the manual now. + -- Added build option CLEAN_STACK which will allow you to choose whether you want to clean the stack or not after every + cipher/hash call + -- Sped up the hash "process()" functions by not copying one byte at a time. + ++ (added just after I uploaded...) + MD4 process() now handles input buffers > 64 bytes + +Aug 1st, 2002 +v0.56 -- Cleaned up the comments in the Blowfish code. + -- Oh yeah, in v0.55 I made all of the descriptor elements constant. I just forgot to mention it. + -- fixed a couple of places where descriptor indexes were tested wrong. Not a huge bug but now its harder + to mess up. + -- Added the SAFER [64-bit block] ciphers K64, SK64, K128 and SK128 to the library. + -- Added the RC2 block cipher to the library. + -- Changed the SAFER define for the SAFER+ cipher to SAFERP so that the new SAFER [64-bit] ciphers + can use them with less confusion. + +July 29th, 2002 +v0.55 -- My god stupid Blowfish has yet again been fixed. I swear I hate that cipher. Next bug in it and boom its out of the + library. Use AES or something else cuz I really hate Blowfish at this stage.... + -- Partial PKCS support [hint DONT USE IT YET CUZ ITS UNTESTED!] + +July 19th, 2002 +v0.54 -- Blowfish now conforms to known test vectors. Silly bad coding tom! + -- RC5/RC6/Serpent all have more test vectors now [and they seemed to have been working before] + +July 18th, 2002 +v0.53 -- Added more test vectors to the blowfish code just for kicks [and they are const now too :-)] + -- added prng/hash/cipher is_valid functions and used them in all of the PK code so you can't enter the code + with an invalid index ever now. + -- Simplified the Yarrow code once again :-) + +July 12th, 2002 +v0.52 -- Fixed a bug in MD4 where the hash descriptor ID was the same as SHA-512. Now MD4 will work with + all the routines... + -- Fixed the comments in SHA-512 to be a bit more meaningful + -- In md4 I made the PADDING array const [again to store it in ROM] + -- in hash_file I switched the constant "512" to "sizeof(buf)" to be a bit safer + -- in SHA-1's test routine I fixed the string literal to say SHA-1 not sha1 + -- Fixed a logical error in the CTR code which would make it skip the first IV value. This means + the CTR code from v0.52 will be incompatible [binary wise] with previous releases but it makes more + sense this way. + -- Added {} braces for as many if/for/blocks of code I could find. My rule is that every for/if/while/do block + must have {} braces around it. + -- made the rounds table in saferp_setup const [again for the ROM think about the ROM!] + -- fixed RC5 since it no longer requires rc5 to be registered in the lib. It used to since the descriptors used to + be part of the table... + -- the packet.c code now makes crypt_error literal string errors when an error occurs + -- cleaned up the SAFER+ key schedule to be a bit easier to read. + -- fixed a huge bug in Twofish with the TWOFISH_SMALL define. Because I clean the stack now I had + changed the "g_func()" to be called indirectly. I forgot to actually return the return of the Twofish + g_func() function which caused it not to work... [does now :-)] + +July 11th, 2002 +v0.51 -- Fixed a bug in SHA512/384 code for multi-block messages. + -- Added more test vectors to the SHA384/512 and TIGER hash functions + -- cleaned up the hash done routines to make more sense + +July 10th, 2002 +v0.50 -- Fixed yarrow.c so that the cipher/hash used would be registered. Also fixed + a bug where the SAFER+ name was "safer" but should have been "safer+". + -- Added an element to the hash descriptors that gives the size of a block [sent into the compressor] + -- Cleaned up the support for HMAC's + -- Cleaned up the test vector routines to make the test vector data const. This means on some platforms it will be + placed in ROM not RAM now. + -- Added MD4 code submited by Dobes Vandermeer ([email protected]) + -- Added "burn_stack" function [idea taken from another source of crypto code]. The idea is if a function has + alot of variables it will clean up better. Functions like the ecb serpent and twofish code will now have their + stacks cleaned and the rest of the code is getting much more straightforward. + -- Added a hashing demo by Daniel Richards ([email protected]) + -- I (Tom) modified some of the test vector routines to use more vectors ala Dobes style. + For example, the MD5/SHA1 code now uses all of the test vectors from the RFC/FIPS spec. + -- Fixed the register/unregister functions to properly report errors in crypt_error + -- Correctly updated yarrow code to remove a few unused variables. + -- Updated manual to fix a few erroneous examples. + -- Added section on Hash based Message Authentication Codes (HMAC) to the manual + +June 19th, 2002 +v0.46 -- Added in HMAC code from Dobes Vandermeer ([email protected]) + +June 8th, 2002 +v0.45 -- Fixed bug in rc5.c where if you called rc5_setup() before registering RC5 it would cause + undefined behaviour. + -- Fixed mycrypt_cfg.h to eliminate the 224 bit ECC key. + -- made the "default" makefile target have depends on mycrypt.h and mycrypt_cfg.h + +Apr 4th, 2002 +v0.44 -- Fixed bug in ecc.c::new_point() where if the initial malloc fails it would not catch it. + +Mar 22nd, 2002 +v0.43 -- Changed the ZLIB code over to the 1.1.4 code base to avoid the "double free" bug. + -- Updated the GCC makefile not to use -O3 or -funroll-loops + -- Version tag in mycrypt.h has been updated :-) + +Mar 10th, 2002 +v0.42 -- The RNG code can now use /dev/urandom before trying /dev/random (J. Klapste) + +Mar 3rd, 2002 +v0.41 -- Added support to link and use ciphers at compile time. This can greatly reduce the code size! + -- Added a demo to show off how small an application can get... 46kb! + -- Disastry pointed out that Blowfish is supposed to be high endian. + -- Made registry code for the PRNGs as well [now the smallest useable link is 43kb] + +Feb 11th, 2002 +v0.40 -- RSA signatures use [and check for] fixed padding scheme. + -- I'm developing in Linux now :-) + -- No more warnings from GCC 2.96 + +Feb 5th, 2002 +v0.39 -- Updated the XTEA code to work in accordance with the XTEA design + +January 24th, 2002 +v0.38 -- CFB and OFB modes can now handle blocks of variable size like the CTR code + -- Wrote a wrapper around the memory compress functions in Zlib that act like the functions + in the rest of my crypto lib + +January 23rd, 2002 +v0.37 -- Added support code so that if a hash size and key size for a cipher don't match up they will + use the next lower key supported. (mainly for the PK code). So you can now use SHA-1 with + Twofish, etc... + -- Added more options for Twofish. You can now tell it to use precomputed sboxes and MDS multiplications + This will speed up the TWOFISH_SMALL implementation by increasing the code size by 1024 bytes. + -- Fixed a bug in prime.c that would not use the correct table if you undefined SMALL_PRIME_TAB + -- Fixed all of the PK packet code to use the same header format [see packet.c]. This makes the PK code + binary wise incompatible with previous releases while the API has not changed at all. + +January 22nd, 2002 +v0.36 -- Corrections to the manual + -- Made a modification to Twofish which lets you build a "small ram" variant. It requires + about 190 bytes of ram for the key storage compared to the 4,200 bytes the normal + variant requires. + -- Reduced the stack space used in all of the PK routines. + +January 19th, 2002 +v0.35 -- If you removed the first hash or cipher from the library it wouldn't return an error if + you used an ID=0 [i.e blowfish or sha256] in any routine. Now it checks for that and will + return an error like it should + -- Merged in new routines from Clay Culver. These routines are for the PK code so you can easily + encode a symmetric key for multiple recipients. + -- Made the ecc and DH make_key() routines make secret keys of the same size as the keysize listed. + Originally I wanted to ensure that the keys were smaller than the order of the field used + However, the bias is so insignifcant using full sizes. For example, with a ECC-192 key the order + is about 2^191.99, so instead I rounded down and used a 184-bit secret key. Now I simply use a full 192-bit + key the code will work just the same except that some 192-bit keys will be duplicates which is not a big + deal since 1/2^192 is a very small bias! + -- Made the configuration a bit simpler and more exacting. You can for example now select which DH or ECC + key settings you wish to support without including the data for all other key settings. I put the #defines + in a new file called "mycrypt_cfg.h" + -- Configured "mpi-config.h" so its a bit more conservative with the memory required and code space used + -- Jason Klapste submitted bug fixes to the yarrow, hash and various other issues. The yarrow code will now + use what ever remaining hash/cipher combo is left [after you #undef them] at build time. He also suggested + a fix to remove unused structures from the symmetric_key and hash_state unions. + -- Made the CTR code handle variable length blocks better. It will buffer the encryption pad so you can + encrypt messages any size block at a time. + -- Simplified the yarrow code to take advantage of the new CTR code. + -- Added a 4096-bit DH key setting. That took me about 36 hours to find! + -- Changed the base64 routines to use a real base64 encoding scheme. + -- Added in DH and ECC "encrypt_key()" functions. They are still rather "beta"ish. + -- Added **Twofish** to the list of ciphers! + +January 18th, 2002 +v0.34 -- Added "sha512" to the list of hashes. Produces a 512-bit message digest. Note that with the current + padding with the rsa_sign() function you cannot use sha512 with a key less than 1536 bits for signatures. + -- Cleaned up the other hash functions to use the LOAD and STORE macros... + +January 17th, 2002 +v0.33 -- Made the lower limit on keysizes for RSA 1024 bits again because I realized that 768 bit keys wouldn't + work with the padding scheme and large symmetric keys. + -- Added information concerning the Zlib license to the manual + -- Added a 3072-bit key setting for the DH code. + -- Made the "find_xyz()" routines take "const char *" as per Clay Culver's suggestion. + -- Fixed an embarassing typo in the manual concerning the hashes. Thank's Clay for finding it! + -- Fixed rand_prime() so that it makes primes bigger than the setting you give. For example, + if you want a 1024-bit prime it would make a 1023-bit one. Now it ensures that the prime + it makes is always greater than 2^(8n) (n == bytes in prime). This doesn't have a huge + impact on security but I corrected it just the same. + -- Fixed the CTR routine to work on platforms where char != 8-bits + -- Fixed sha1/sha256/md5/blowfish to not assume "unsigned long == 32-bits", Basically any operation with carries + I "AND" with 0xFFFFFFFF. That forces only the lower 32-bits to have information in it. On x86 platforms + most compilers optimize out the AND operation since its a nop. + +January 16th, 2002 +v0.32 -- Made Rijndael's setup function fully static so it is thread safe + -- Svante Seleborg suggested a cosmetic style fixup for aes.c, + basically to remove some of the #defines to clean it up + -- Made the PK routines not export the ASCII version of the names of ciphers/hashes which makes + the PK message formats *incompatible* with previous releases. + -- Merge in Zlib :-) + + +January 15th, 2002 +v0.31 -- The RSA routines can now use CRT to speed up decryption/signatures. The routines are backwards + compatible with previous releases. + -- Fixed another bug that Svante Seleborg found. Basically you could buffer-overrun the + rsa_exptmod() function itself if you're not careful. That's fixed now. Fixed another bug in + rsa_exptmod() where if it knows the buffer you passed is too small it wouldn't free all used + memory. + -- improved the readability of the PK import/export functions + -- Added a fix to RSA.C by Clay Culver + -- Changed the CONST64 macro for MSVC to use the "unsigned __int64" type, e.g. "ui64" instead of "i64". + +January 14th, 2002 +v0.30 -- Major change to the Yarrow PRNG code, fixed a bug that Eugene Starokoltsev found. + Basically if you added entropy to the pool in small increments it could in fact + cancel out. Now I hash the pool with the new data which is way smarter. + +January 12th, 2002 +v0.29 -- Added MPI code written by Svante Seleborg to the library. This will make the PK code much + easier to follow and debug. Actually I've already fixed a memory leak in dh_shared_secret(). + -- Memory leaks found and correct in all three PK routines. The leaks would occur when a bignum + operation fails so it wouldn't normally turn up in the course of a program + -- Fixed bugs in dh_key_size and ecc_key_size which would return garbage for invalid key idx'es + +January 11th, 2002 +v0.28 -- Cleaned up some code so that it doesn't assume "char == 8bits". Mainly SAFER+ has been + changed. + -- ***HUGE*** changes in the PK code. I check all return values in the bignum code so if there + are errors [insufficient memory, etc..] it will be reported. This makes the code fairly more + robust and likely to catch any errors. + -- Updated the is_prime() function to use a new prototype [it can return errors now] and it also + does trial divisions against more primes before the Rabin Miller steps + -- Added OFB, CFB and ECB generic wrappers for the symmetric ciphers to round out the implementations. + -- Added Xtea to the list of ciphers, to the best of my ability I have verified this implementation. + I should note that there is not alot of concrete information about the cipher. "Ansi C" versions + I found did not address endianess and were not even portable!. This code is portable and to the + best of my knowledge implements the Xtea algorithm as per the [short] X-Tea paper. + -- Reformated the manual to include the **FULL** source code optimized to be pritable. + +January 9th, 2002 +v0.27 -- Changed the char constants to numerical values. It is backwards compatible and should work on + platforms where 'd' != 100 [for example]. + -- Made a change to rand_prime() which takes the input length as a signed type so you can pass + a negative len to get a "3 mod 4" style prime... oops + -- changed the MSVC makefile to build with a warning level of three, no warnings! + +January 8th, 2002 +v0.26 -- updated SHA-256 to use ROR() for a rotate so 64-bit machines won't corrupt + the output + -- Changed #include <> to #include "" for local .h files as per Richard Heathfields' suggestions. + -- Fixed bug in MPI [well bug in MSVC] that compiled code incorrectly in mp_set_int() + I added a work around that catches the error and continues normally. + +January 8th, 2002 +v0.25 -- Added a stupid define so MSVC 6.00 can build the library. + -- Big thanks to sci.crypt and "Ajay K. Agrawal" for helping me port this to MSVC + +January 7th, 2002 +v0.24 -- Sped up Blowfish by unrolling and removing the swaps. + -- Made the code comply with more traditional ANSI C standards + Should compile with MSVC with less errors + -- moved the demos and documentation into their own directories + so you can easily build the library with other tool chains + by compiling the files in the root + -- converted functions with length of outputs to use + "unsigned long" so 16-bit platforms will like this library more. + +January 5th, 2002 +v0.23 -- Fixed a small error in the MPI config it should build fine anywhere. + +January 4th, 2002 +v0.22 -- faster gf_mul() code + -- gf_shl() and gf_shr() are safe on 64-bit platforms now + -- Fixed an error in the hashes that Brian Gladman found. + Basically if the message has exactly 56 bytes left to be + compressed I handled them incorrectly. + +January 4th, 2002 +v0.21 -- sped up the ECC code by removing redundant divisions in the + point add and double routines. I also extract the bits more + efficiently in "ecc_mulmod()" now. + -- sped up [and documented] the rand_prime() function. Now it just + makes a random integer and increments by two until a prime is found + This is faster since it doesn't require alot of calls to the PRNG and + it doesn't require loading huge integers over and over. rand_prime() + can also make primes congruent to 3 mod 4 [i.e for a blum integer] + -- added a gf_sqrt() function that finds square roots in a GF(2^w) field + -- fixed a bug in gf_div() that would return the wrong results if the divisor had a greator + divisor than the dividend. + +January 4th, 2002 +v0.20 -- Added the fixed MPI back in so RSA and DH are much faster again + +v0.19 -- Updated the manual to reflect the fact that Brian Gladman wrote the AES and Serpent code. + -- DH, ECC and RSA signature/decryption functions check if the key is private + -- new DH signature/verification code works just like the RSA/ECC versions + +January 3rd, 2002 +v0.18 -- Added way more comments to each .C file + -- fixed a bug in cbc_decrypt(pt, ct, key) where pt == ct [i.e same buffer] + -- fixed RC5 so it reads the default rounds out of the cipher_descriptor table + -- cleaned up ecc_export() + -- Cleaned up dh_import() and ecc_import() which also perform more + error checking now + -- Fixed a serious flaw in rsa_import() with private keys. + +January 2nd, 2002 +v0.17 -- Fixed a bug in the random prime generator that fixes the wrong bits to one + -- ECC and DH code verify that the moduli and orders are in fact prime. That + slows down the test routines alot but what are you gonna do? + -- Fixed a huge bug in the mp_exptmod() function which incorrectly calculates g^x mod p for some + values of p. I replaced it with a slow function. Once the author of MPI fixes his faster routine + I will switch back. + +January 1st, 2002 [whoa new year!] +v0.16 -- Improved GF division code that is faster. + -- documented the GF code + +December 31st, 2001 +v0.15 -- A 1792-bit and 2048-bit DH setting was added. Took me all night to + find a 1792 and 2048-bit strong prime but what the heck + -- Library now has polynomial-basis GF(2^w) routines I wrote myself. Can be used to perform + ECC over GF(2^w) later on.... + -- Fixed a bug with the defines that allows it to build in windows + +December 30th, 2001 +v0.14 -- Fixed the xxx_encrypt() packet routines to make an IV of appropriate size + for the cipher used. It was defaulting to making a 256-bit IV... + -- base64_encode() now appends a NULL byte, um "duh" stupid mistake now fixed... + -- spell checked the manual again... :-) + +December 30th, 2001 +v0.13 -- Switching back to older copy of MPI since it works! arrg.. + -- Added sign/verify functions for ECC + -- all signature verification routines default to invalid signatures. + -- Changed all calls to memset to zeromem. Fixed up some buffer problems + in other routines. All calls to zeromem let the compiler determine the size + of the data to wipe. + +December 29th, 2001 +v0.12 -- Imported a new version of MPI [the bignum library] that should + be a bit more stable [if you want to write your own bignum + routines with the library that is...] + -- Manual has way more info + -- hash_file() clears stack now [like it should] + -- The artificial cap on the hash input size of 2^32 bits has been + removed. Basically I was too lazy todo 64-bit math before + [don't ask why... I can't remember]. Anyways the hashes + support the size of 2^64 bits [if you ever use that many bits in a message + that's just wierd...] + -- The hashes now wipe the "hash_state" after the digest is computed. This helps + prevent the internal state of the hash being leaked accidently [i.e stack problems] + +December 29th, 2001 +v0.11 -- Made #define's so you can trim the library down by removing + ciphers, hashs, modes of operation, prngs, and even PK algorithms + For example, the library with rijndael+ctr+sha1+ECC is 91KB compared + to the 246kb the full library takes. + -- Added ECC packet routines for encrypt/decrypt/sign/verify much akin to + the RSA packet routines. + -- ECC now compresses the public key, a ECC-192 public key takes 33 bytes + for example.... + +December 28th, 2001 +v0.10 -- going to restart the manual from scratch to make it more + clear and professional + -- Added ECC over Z/pZ. Basically provides as much as DH + except its faster since the numbers are smaller. For example, + A comparable 256-bit ECC key provides as much security as expected + from a DH key over 1024-bits. + -- Cleaned up the DH code to not export the symbol "sets[]" + -- Fixed a bug in the DH code that would not make the correct size + random string if you made the key short. For instance if you wanted + a 512-bit DH key it would make a 768-bit one but only make up 512-bits + for the exponent... now it makes the full 768 bits [or whatever the case + is] + -- Fixed another ***SERIOUS*** bug in the DH code that would default to 768-bit + keys by mistake. + +December 25th, 2001 +v0.09 -- Includes a demo program called file_crypt which shows off + how to use the library to make a command line tool which + allows the user to encode/decode a file with any + hash (on the passphrase) and cipher in CTR mode. + -- Switched everything to use typedef's now to clear up the code. + -- Added AES (128/192 and 256 bit key modes) + +December 24th, 2001 +v0.08 -- fixed a typo in the manual. MPI stores its bignums in + BIG endian not little. + -- Started adding a RNG to the library. Right now it tries + to open /dev/random and if that fails it uses either the + MS CSP or the clock drift RNG. It also allows callbacks + since the drift RNG is slow (about 3.5 bytes/sec) + -- the RNG can also automatically setup a PRNG as well now + +v0.07 -- Added basic DH routines sufficient to + negotiate shared secrets + [see the manual for a complete example!] + -- Fixed rsa_import to detect when the input + could be corrupt. + -- added more to the manual. + +December 22nd, 2001 +v0.06 -- Fixed some formatting errors in + the hash functions [just source code cleaning] + -- Fixed a typo in the error message for sha256 :-) + -- Fixed an error in base64_encode() that + would fail to catch all buffer overruns + -- Test program times the RSA and symmetric cipher + routines for kicks... + -- Added the "const" modifier to alot of routines to + clear up the purpose of each function. + -- Changed the name of the library to "TomCrypt" + following a suggestion from a sci.crypt reader.... + +v0.05 -- Fixed the ROL/ROR macro to be safe on platforms + where unsigned long is not 32-bits + -- I have added a bit more to the documentation + manual "crypt.pdf" provided. + -- I have added a makefile for LCC-Win32. It should be + easy to port to other LCC platforms by changing a few lines. + -- Ran a spell checker over the manual. + -- Changed the header and library from "crypt" to "mycrypt" to not + clash with the *nix package "crypt". + +v0.04 -- Fixed a bug in the RC5,RC6,Blowfish key schedules + where if the key was not a multiple of 4 bytes it would + not get loaded correctly. + +December 21st, 2001 + +v0.03 -- Added Serpent to the list of ciphers. + +v0.02 -- Changed RC5 to only allow 12 to 24 rounds + -- Added more to the manual. + +v0.01 -- We will call this the first version. + +/* $Source: /cvs/libtom/libtomcrypt/changes,v $ */ +/* $Revision: 1.106 $ */ +/* $Date: 2005/06/27 12:37:06 $ */ +