Mercurial > dropbear

annotate libtomcrypt/src/mac/omac/omac_memory.c @ 1156:a8f4dade70e5

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avoid getpass when not used some systems (like android's bionic) do not provide getpass. you can disable ENABLE_CLI_PASSWORD_AUTH & ENABLE_CLI_INTERACT_AUTH to avoid its use (and rely on pubkey auth), but the link still fails because the support file calls getpass. do not define this func if both of those auth methods are not used.
author Mike Frysinger <vapier@gentoo.org>
date Wed, 21 Oct 2015 22:39:55 +0800
parents 0cbe8f6dbf9e
children f849a5ca2efc
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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://libtomcrypt.com
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10 */
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11 #include "tomcrypt.h"
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12
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13 /**
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14 @file omac_memory.c
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15 OMAC1 support, process a block of memory, Tom St Denis
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16 */
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17
382
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18 #ifdef LTC_OMAC
285
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19
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20 /**
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21 OMAC a block of memory
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22 @param cipher The index of the desired cipher
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23 @param key The secret key
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24 @param keylen The length of the secret key (octets)
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25 @param in The data to send through OMAC
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26 @param inlen The length of the data to send through OMAC (octets)
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27 @param out [out] The destination of the authentication tag
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28 @param outlen [in/out] The max size and resulting size of the authentication tag (octets)
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29 @return CRYPT_OK if successful
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30 */
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31 int omac_memory(int cipher,
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32 const unsigned char *key, unsigned long keylen,
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33 const unsigned char *in, unsigned long inlen,
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34 unsigned char *out, unsigned long *outlen)
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35 {
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36 int err;
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37 omac_state *omac;
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38
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39 LTC_ARGCHK(key != NULL);
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40 LTC_ARGCHK(in != NULL);
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41 LTC_ARGCHK(out != NULL);
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42 LTC_ARGCHK(outlen != NULL);
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43
382
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44 /* is the cipher valid? */
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45 if ((err = cipher_is_valid(cipher)) != CRYPT_OK) {
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46 return err;
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47 }
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48
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49 /* Use accelerator if found */
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50 if (cipher_descriptor[cipher].omac_memory != NULL) {
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51 return cipher_descriptor[cipher].omac_memory(key, keylen, in, inlen, out, outlen);
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52 }
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53
285
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54 /* allocate ram for omac state */
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55 omac = XMALLOC(sizeof(omac_state));
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56 if (omac == NULL) {
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57 return CRYPT_MEM;
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58 }
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59
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60 /* omac process the message */
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61 if ((err = omac_init(omac, cipher, key, keylen)) != CRYPT_OK) {
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62 goto LBL_ERR;
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63 }
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64 if ((err = omac_process(omac, in, inlen)) != CRYPT_OK) {
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65 goto LBL_ERR;
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66 }
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67 if ((err = omac_done(omac, out, outlen)) != CRYPT_OK) {
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68 goto LBL_ERR;
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69 }
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70
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71 err = CRYPT_OK;
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72 LBL_ERR:
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73 #ifdef LTC_CLEAN_STACK
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74 zeromem(omac, sizeof(omac_state));
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75 #endif
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76
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77 XFREE(omac);
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78 return err;
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79 }
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80
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81 #endif
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82
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83 /* $Source: /cvs/libtom/libtomcrypt/src/mac/omac/omac_memory.c,v $ */
382
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84 /* $Revision: 1.6 $ */
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85 /* $Date: 2006/11/08 23:01:06 $ */