Mercurial > dropbear

annotate libtomcrypt/src/mac/pmac/pmac_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
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rev   line source
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1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
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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
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12 /**
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13 @file pmac_memory_multi.c
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6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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14 PMAC implementation, process multiple blocks of memory, by Tom St Denis
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15 */
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16
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17 #ifdef LTC_PMAC
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18
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19 /**
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20 PMAC multiple blocks of memory
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21 @param cipher The index of the cipher desired
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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] Destination for the authentication tag
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25 @param outlen [in/out] The max size and resulting size of the authentication tag
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26 @param in The data you wish to send through PMAC
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27 @param inlen The length of data you wish to send through PMAC (octets)
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28 @param ... tuples of (data,len) pairs to PMAC, terminated with a (NULL,x) (x=don't care)
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29 @return CRYPT_OK if successful
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30 */
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6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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31 int pmac_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 pmac_state *pmac;
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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 pmac state */
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48 pmac = XMALLOC(sizeof(pmac_state));
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49 if (pmac == NULL) {
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50 return CRYPT_MEM;
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51 }
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6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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52
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53 if ((err = pmac_init(pmac, cipher, key, keylen)) != CRYPT_OK) {
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54 goto LBL_ERR;
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55 }
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56 va_start(args, inlen);
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6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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57 curptr = in;
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58 curlen = inlen;
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59 for (;;) {
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60 /* process buf */
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61 if ((err = pmac_process(pmac, curptr, curlen)) != CRYPT_OK) {
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62 goto LBL_ERR;
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63 }
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64 /* step to next */
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65 curptr = va_arg(args, const unsigned char*);
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66 if (curptr == NULL) {
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67 break;
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68 }
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69 curlen = va_arg(args, unsigned long);
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70 }
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71 if ((err = pmac_done(pmac, out, outlen)) != CRYPT_OK) {
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72 goto LBL_ERR;
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73 }
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74 LBL_ERR:
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75 #ifdef LTC_CLEAN_STACK
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76 zeromem(pmac, sizeof(pmac_state));
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77 #endif
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78 XFREE(pmac);
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79 va_end(args);
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6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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80 return err;
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81 }
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82
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83 #endif
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84
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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85 /* ref: $Format:%D$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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86 /* git commit: $Format:%H$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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87 /* commit time: $Format:%ai$ */