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comparison libtomcrypt/src/mac/omac/omac_done.c @ 1478:3a933956437e coverity

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update coverity
author Matt Johnston <matt@ucc.asn.au>
date Fri, 09 Feb 2018 23:49:22 +0800
parents 6dba84798cd5
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1439:8d24733026c5 1478:3a933956437e
3 * LibTomCrypt is a library that provides various cryptographic 3 * LibTomCrypt is a library that provides various cryptographic
4 * algorithms in a highly modular and flexible manner. 4 * algorithms in a highly modular and flexible manner.
5 * 5 *
6 * The library is free for all purposes without any express 6 * The library is free for all purposes without any express
7 * guarantee it works. 7 * guarantee it works.
8 *
9 * Tom St Denis, [email protected], http://libtom.org
10 */ 8 */
11 #include "tomcrypt.h" 9 #include "tomcrypt.h"
12 10
13 /** 11 /**
14 @file omac_done.c 12 @file omac_done.c
15 LTC_OMAC1 support, terminate a stream, Tom St Denis 13 OMAC1 support, terminate a stream, Tom St Denis
16 */ 14 */
17 15
18 #ifdef LTC_OMAC 16 #ifdef LTC_OMAC
19 17
20 /** 18 /**
21 Terminate an LTC_OMAC stream 19 Terminate an OMAC stream
22 @param omac The LTC_OMAC state 20 @param omac The OMAC state
23 @param out [out] Destination for the authentication tag 21 @param out [out] Destination for the authentication tag
24 @param outlen [in/out] The max size and resulting size of the authentication tag 22 @param outlen [in/out] The max size and resulting size of the authentication tag
25 @return CRYPT_OK if successful 23 @return CRYPT_OK if successful
26 */ 24 */
27 int omac_done(omac_state *omac, unsigned char *out, unsigned long *outlen) 25 int omac_done(omac_state *omac, unsigned char *out, unsigned long *outlen)
63 /* encrypt it */ 61 /* encrypt it */
64 if ((err = cipher_descriptor[omac->cipher_idx].ecb_encrypt(omac->block, omac->block, &omac->key)) != CRYPT_OK) { 62 if ((err = cipher_descriptor[omac->cipher_idx].ecb_encrypt(omac->block, omac->block, &omac->key)) != CRYPT_OK) {
65 return err; 63 return err;
66 } 64 }
67 cipher_descriptor[omac->cipher_idx].done(&omac->key); 65 cipher_descriptor[omac->cipher_idx].done(&omac->key);
68 66
69 /* output it */ 67 /* output it */
70 for (x = 0; x < (unsigned)omac->blklen && x < *outlen; x++) { 68 for (x = 0; x < (unsigned)omac->blklen && x < *outlen; x++) {
71 out[x] = omac->block[x]; 69 out[x] = omac->block[x];
72 } 70 }
73 *outlen = x; 71 *outlen = x;
79 } 77 }
80 78
81 #endif 79 #endif
82 80
83 81
84 /* $Source$ */ 82 /* ref: $Format:%D$ */
85 /* $Revision$ */ 83 /* git commit: $Format:%H$ */
86 /* $Date$ */ 84 /* commit time: $Format:%ai$ */