Mercurial > dropbear

comparison libtomcrypt/notes/tech0005.txt @ 415:8b9aba1d5fa4 channel-fix

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
merge of '73fe066c5d9e2395354ba74756124d45c978a04d' and 'f5014cc84558f1e8eba42dbecf9f72f94bfe6134'
author Matt Johnston <matt@ucc.asn.au>
date Tue, 06 Feb 2007 16:00:18 +0000
parents 0cbe8f6dbf9e
children f849a5ca2efc
comparison
equal deleted inserted replaced
414:c53a26c430e5 415:8b9aba1d5fa4
7 7
8 Tweaking... 8 Tweaking...
9 9
10 You can disable whole classes of algorithms on the command line with the LTC_NO_* defines. From there you can manually turn on what you want to enable. 10 You can disable whole classes of algorithms on the command line with the LTC_NO_* defines. From there you can manually turn on what you want to enable.
11 11
12 The following build with GCC 3.4.3 on an AMD64 box gets you AES, CTR mode, SHA-256, HMAC, Yarrow, full RSA PKCS #1, PKCS #5, ASN.1 DER and MPI in 12 The following build with GCC 3.4.4 on an AMD64 box gets you AES, CTR mode, SHA-256, HMAC, Yarrow, full RSA PKCS #1, PKCS #5 and ASN.1 DER in
13 roughly 80KB of code. 13 roughly 40KB of code (49KB on the ARMv4) (both excluding the math library).
14 14
15 CFLAGS="-DSC_RSA_1 -DLTC_NO_CIPHERS -DLTC_NO_HASHES -DLTC_NO_PRNGS -DLTC_NO_MACS -DLTC_NO_MODES -DLTC_NO_PK -DRIJNDAEL -DCTR -DSHA256 \ 15 CFLAGS="-DLTC_NO_CIPHERS -DLTC_NO_HASHES -DLTC_NO_PRNGS -DLTC_NO_MACS -DLTC_NO_MODES -DLTC_NO_PK -DRIJNDAEL -DLTC_CTR_MODE -DSHA256 \
16 -DHMAC -DYARROW -DMRSA -DMPI -Os -fomit-frame-pointer" make IGNORE_SPEED=1 16 -DLTC_HMAC -DYARROW -DMRSA -DMPI -DTFM_DESC -DARGTYPE=3 -Os -DLTC_SMALL_CODE -fomit-frame-pointer" make IGNORE_SPEED=1
17
18 Obviously this won't get you performance but if you need to pack a crypto lib in a device with limited means it's more than enough...
17 19
18 Neato eh? 20 Neato eh?