Mercurial > dropbear
annotate libtomcrypt/src/mac/pmac/pmac_memory.c @ 1792:2bf1e97ba3cd
Update INSTALL (#113)
Make Git/Mercurial instructions easier to understand
author | Xenhat <commits@xenh.at> |
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date | Thu, 17 Dec 2020 04:35:48 -0500 |
parents | 6dba84798cd5 |
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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 |
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11 /** |
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12 @file pmac_memory.c |
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13 PMAC implementation, process a block of memory, by Tom St Denis |
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14 */ |
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15 |
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16 #ifdef LTC_PMAC |
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17 |
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18 /** |
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19 PMAC a block of memory |
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20 @param cipher The index of the cipher desired |
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21 @param key The secret key |
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22 @param keylen The length of the secret key (octets) |
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23 @param in The data you wish to send through PMAC |
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24 @param inlen The length of data you wish to send through PMAC (octets) |
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25 @param out [out] Destination for the authentication tag |
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26 @param outlen [in/out] The max size and resulting size of the authentication tag |
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27 @return CRYPT_OK if successful |
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28 */ |
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29 int pmac_memory(int cipher, |
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30 const unsigned char *key, unsigned long keylen, |
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31 const unsigned char *in, unsigned long inlen, |
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32 unsigned char *out, unsigned long *outlen) |
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33 { |
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34 int err; |
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35 pmac_state *pmac; |
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36 |
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37 LTC_ARGCHK(key != NULL); |
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38 LTC_ARGCHK(in != NULL); |
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39 LTC_ARGCHK(out != NULL); |
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40 LTC_ARGCHK(outlen != NULL); |
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41 |
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42 /* allocate ram for pmac state */ |
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43 pmac = XMALLOC(sizeof(pmac_state)); |
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44 if (pmac == NULL) { |
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45 return CRYPT_MEM; |
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46 } |
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47 |
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48 if ((err = pmac_init(pmac, cipher, key, keylen)) != CRYPT_OK) { |
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49 goto LBL_ERR; |
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50 } |
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51 if ((err = pmac_process(pmac, in, inlen)) != CRYPT_OK) { |
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52 goto LBL_ERR; |
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53 } |
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54 if ((err = pmac_done(pmac, out, outlen)) != CRYPT_OK) { |
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55 goto LBL_ERR; |
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56 } |
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57 |
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58 err = CRYPT_OK; |
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59 LBL_ERR: |
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60 #ifdef LTC_CLEAN_STACK |
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61 zeromem(pmac, sizeof(pmac_state)); |
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62 #endif |
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63 |
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64 XFREE(pmac); |
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65 return err; |
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66 } |
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67 |
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68 #endif |
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69 |
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70 /* ref: $Format:%D$ */ |
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71 /* git commit: $Format:%H$ */ |
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72 /* commit time: $Format:%ai$ */ |