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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://libtomcrypt.org |
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10 */ |
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11 #include "mycrypt.h" |
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12 |
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13 int hash_memory(int hash, const unsigned char *data, unsigned long len, unsigned char *dst, unsigned long *outlen) |
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14 { |
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143
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15 hash_state *md; |
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3
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16 int err; |
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17 |
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18 _ARGCHK(data != NULL); |
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19 _ARGCHK(dst != NULL); |
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20 _ARGCHK(outlen != NULL); |
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21 |
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22 if ((err = hash_is_valid(hash)) != CRYPT_OK) { |
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23 return err; |
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24 } |
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25 |
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26 if (*outlen < hash_descriptor[hash].hashsize) { |
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27 return CRYPT_BUFFER_OVERFLOW; |
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28 } |
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143
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29 |
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30 md = XMALLOC(sizeof(hash_state)); |
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31 if (md == NULL) { |
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32 return CRYPT_MEM; |
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33 } |
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3
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34 |
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143
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35 if ((err = hash_descriptor[hash].init(md)) != CRYPT_OK) { |
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36 goto __ERR; |
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37 } |
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38 if ((err = hash_descriptor[hash].process(md, data, len)) != CRYPT_OK) { |
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39 goto __ERR; |
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40 } |
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41 err = hash_descriptor[hash].done(md, dst); |
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42 *outlen = hash_descriptor[hash].hashsize; |
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43 __ERR: |
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44 #ifdef CLEAN_STACK |
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45 zeromem(md, sizeof(hash_state)); |
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46 #endif |
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47 XFREE(md); |
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48 |
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49 return err; |
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3
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50 } |
