Mercurial > dropbear

annotate libtomcrypt/src/mac/xcbc/xcbc_memory.c @ 1825:7a0068effc65

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Add a comment about sending initial auth request
author Matt Johnston <matt@ucc.asn.au>
date Mon, 11 Oct 2021 15:12:22 +0800
parents 6dba84798cd5
children
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382
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diff changeset
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 xcbc_process.c
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13 XCBC Support, XCBC-MAC a block of memory
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14 */
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15
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16 #ifdef LTC_XCBC
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17
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents: 1435
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18 /** XCBC-MAC a block of memory
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19 @param cipher Index of cipher to use
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20 @param key [in] Secret key
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21 @param keylen Length of key in octets
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22 @param in [in] Message to MAC
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23 @param inlen Length of input in octets
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24 @param out [out] Destination for the MAC tag
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25 @param outlen [in/out] Output size and final tag size
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26 Return CRYPT_OK on success.
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27 */
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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28 int xcbc_memory(int cipher,
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29 const unsigned char *key, unsigned long keylen,
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30 const unsigned char *in, unsigned long inlen,
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31 unsigned char *out, unsigned long *outlen)
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32 {
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33 xcbc_state *xcbc;
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34 int err;
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35
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36 /* is the cipher valid? */
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37 if ((err = cipher_is_valid(cipher)) != CRYPT_OK) {
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38 return err;
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39 }
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40
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41 /* Use accelerator if found */
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42 if (cipher_descriptor[cipher].xcbc_memory != NULL) {
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43 return cipher_descriptor[cipher].xcbc_memory(key, keylen, in, inlen, out, outlen);
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44 }
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45
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46 xcbc = XCALLOC(1, sizeof(*xcbc));
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47 if (xcbc == NULL) {
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48 return CRYPT_MEM;
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49 }
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50
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51 if ((err = xcbc_init(xcbc, cipher, key, keylen)) != CRYPT_OK) {
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52 goto done;
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53 }
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54
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55 if ((err = xcbc_process(xcbc, in, inlen)) != CRYPT_OK) {
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56 goto done;
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57 }
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58
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59 err = xcbc_done(xcbc, out, outlen);
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60 done:
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61 XFREE(xcbc);
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62 return err;
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63 }
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64
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65 #endif
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66
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents: 1435
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67 /* ref: $Format:%D$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
68 /* git commit: $Format:%H$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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69 /* commit time: $Format:%ai$ */