Mercurial > dropbear

annotate libtomcrypt/src/mac/pmac/pmac_memory_multi.c @ 1696:d18fa38c1fd4

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initialise variable to stop warning
author Matt Johnston <matt@ucc.asn.au>
date Thu, 28 May 2020 22:02:03 +0800
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
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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12 /**
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13 @file pmac_memory_multi.c
1471
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 */
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents: 1435
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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 }
1471
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);
1471
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);
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
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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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diff changeset
86 /* git commit: $Format:%H$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
87 /* commit time: $Format:%ai$ */