Mercurial > dropbear

annotate libtomcrypt/src/mac/xcbc/xcbc_memory_multi.c @ 1659:d32bcb5c557d

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Add Ed25519 support (#91) * Add support for Ed25519 as a public key type Ed25519 is a elliptic curve signature scheme that offers better security than ECDSA and DSA and good performance. It may be used for both user and host keys. OpenSSH key import and fuzzer are not supported yet. Initially inspired by Peter Szabo. * Add curve25519 and ed25519 fuzzers * Add import and export of Ed25519 keys
author Vladislav Grishenko <themiron@users.noreply.github.com>
date Wed, 11 Mar 2020 21:09:45 +0500
parents 6dba84798cd5
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
382
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diff changeset
1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
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diff changeset
2 *
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3 * LibTomCrypt is a library that provides various cryptographic
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4 * algorithms in a highly modular and flexible manner.
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5 *
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6 * The library is free for all purposes without any express
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7 * guarantee it works.
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8 */
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9 #include "tomcrypt.h"
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10 #include <stdarg.h>
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11
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
12 /**
382
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diff changeset
13 @file xcbc_memory_multi.c
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diff changeset
14 XCBC support, process multiple blocks of memory, Tom St Denis
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15 */
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16
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17 #ifdef LTC_XCBC
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18
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19 /**
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6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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20 XCBC multiple blocks of memory
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21 @param cipher The index of the desired cipher
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22 @param key The secret key
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23 @param keylen The length of the secret key (octets)
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24 @param out [out] The destination of the authentication tag
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25 @param outlen [in/out] The max size and resulting size of the authentication tag (octets)
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26 @param in The data to send through XCBC
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27 @param inlen The length of the data to send through XCBC (octets)
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28 @param ... tuples of (data,len) pairs to XCBC, terminated with a (NULL,x) (x=don't care)
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29 @return CRYPT_OK if successful
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30 */
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
31 int xcbc_memory_multi(int cipher,
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32 const unsigned char *key, unsigned long keylen,
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33 unsigned char *out, unsigned long *outlen,
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34 const unsigned char *in, unsigned long inlen, ...)
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35 {
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36 int err;
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37 xcbc_state *xcbc;
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38 va_list args;
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39 const unsigned char *curptr;
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40 unsigned long curlen;
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41
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42 LTC_ARGCHK(key != NULL);
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43 LTC_ARGCHK(in != NULL);
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44 LTC_ARGCHK(out != NULL);
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45 LTC_ARGCHK(outlen != NULL);
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46
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47 /* allocate ram for xcbc state */
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48 xcbc = XMALLOC(sizeof(xcbc_state));
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49 if (xcbc == NULL) {
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50 return CRYPT_MEM;
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51 }
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52
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53 /* xcbc process the message */
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54 if ((err = xcbc_init(xcbc, cipher, key, keylen)) != CRYPT_OK) {
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55 goto LBL_ERR;
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56 }
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57 va_start(args, inlen);
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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58 curptr = in;
382
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59 curlen = inlen;
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60 for (;;) {
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61 /* process buf */
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62 if ((err = xcbc_process(xcbc, curptr, curlen)) != CRYPT_OK) {
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63 goto LBL_ERR;
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64 }
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65 /* step to next */
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66 curptr = va_arg(args, const unsigned char*);
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67 if (curptr == NULL) {
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68 break;
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69 }
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70 curlen = va_arg(args, unsigned long);
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71 }
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72 if ((err = xcbc_done(xcbc, out, outlen)) != CRYPT_OK) {
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73 goto LBL_ERR;
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74 }
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75 LBL_ERR:
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76 #ifdef LTC_CLEAN_STACK
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77 zeromem(xcbc, sizeof(xcbc_state));
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78 #endif
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diff changeset
79 XFREE(xcbc);
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80 va_end(args);
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
81 return err;
382
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82 }
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83
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84 #endif
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85
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents: 1435
diff changeset
86 /* ref: $Format:%D$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
87 /* git commit: $Format:%H$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents: 1435
diff changeset
88 /* commit time: $Format:%ai$ */