Mercurial > dropbear
annotate libtomcrypt/src/hashes/helper/hash_memory_multi.c @ 1456:a90fdd2d2ed8 fuzz
add fuzzer-preauth_nomaths
author | Matt Johnston <matt@ucc.asn.au> |
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date | Tue, 23 Jan 2018 23:05:47 +0800 |
parents | f849a5ca2efc |
children | 6dba84798cd5 |
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 * Tom St Denis, [email protected], http://libtom.org |
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10 */ |
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11 #include "tomcrypt.h" |
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12 #include <stdarg.h> |
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13 /** |
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14 @file hash_memory_multi.c |
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15 Hash (multiple buffers) memory helper, Tom St Denis |
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16 */ |
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17 |
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18 /** |
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19 Hash multiple (non-adjacent) blocks of memory at once. |
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20 @param hash The index of the hash you wish to use |
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21 @param out [out] Where to store the digest |
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22 @param outlen [in/out] Max size and resulting size of the digest |
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23 @param in The data you wish to hash |
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24 @param inlen The length of the data to hash (octets) |
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25 @param ... tuples of (data,len) pairs to hash, terminated with a (NULL,x) (x=don't care) |
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26 @return CRYPT_OK if successful |
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27 */ |
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28 int hash_memory_multi(int hash, unsigned char *out, unsigned long *outlen, |
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29 const unsigned char *in, unsigned long inlen, ...) |
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30 { |
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31 hash_state *md; |
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32 int err; |
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33 va_list args; |
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34 const unsigned char *curptr; |
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35 unsigned long curlen; |
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36 |
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37 LTC_ARGCHK(in != NULL); |
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38 LTC_ARGCHK(out != NULL); |
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39 LTC_ARGCHK(outlen != NULL); |
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40 |
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41 if ((err = hash_is_valid(hash)) != CRYPT_OK) { |
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42 return err; |
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43 } |
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44 |
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45 if (*outlen < hash_descriptor[hash].hashsize) { |
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46 *outlen = hash_descriptor[hash].hashsize; |
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47 return CRYPT_BUFFER_OVERFLOW; |
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48 } |
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49 |
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50 md = XMALLOC(sizeof(hash_state)); |
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51 if (md == NULL) { |
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52 return CRYPT_MEM; |
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53 } |
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54 |
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55 if ((err = hash_descriptor[hash].init(md)) != CRYPT_OK) { |
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56 goto LBL_ERR; |
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57 } |
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58 |
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59 va_start(args, inlen); |
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60 curptr = in; |
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61 curlen = inlen; |
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62 for (;;) { |
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63 /* process buf */ |
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64 if ((err = hash_descriptor[hash].process(md, curptr, curlen)) != CRYPT_OK) { |
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65 goto LBL_ERR; |
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66 } |
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67 /* step to next */ |
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68 curptr = va_arg(args, const unsigned char*); |
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69 if (curptr == NULL) { |
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70 break; |
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71 } |
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72 curlen = va_arg(args, unsigned long); |
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73 } |
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74 err = hash_descriptor[hash].done(md, out); |
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75 *outlen = hash_descriptor[hash].hashsize; |
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76 LBL_ERR: |
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77 #ifdef LTC_CLEAN_STACK |
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78 zeromem(md, sizeof(hash_state)); |
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79 #endif |
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80 XFREE(md); |
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81 va_end(args); |
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82 return err; |
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propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
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83 } |
1b9e69c058d2
propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
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84 |
1435
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update to libtomcrypt 1.17 (with Dropbear changes)
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85 /* $Source$ */ |
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86 /* $Revision$ */ |
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87 /* $Date$ */ |