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comparison libtomcrypt/src/encauth/gcm/gcm_gf_mult.c @ 1435:f849a5ca2efc

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update to libtomcrypt 1.17 (with Dropbear changes)
author Matt Johnston <matt@ucc.asn.au>
date Sat, 24 Jun 2017 17:50:50 +0800
parents 0cbe8f6dbf9e
children 6dba84798cd5
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1434:27b9ddb06b09 1435:f849a5ca2efc
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 * 8 *
9 * Tom St Denis, [email protected], http://libtomcrypt.com 9 * Tom St Denis, [email protected], http://libtom.org
10 */ 10 */
11 11
12 /** 12 /**
13 @file gcm_gf_mult.c 13 @file gcm_gf_mult.c
14 GCM implementation, do the GF mult, by Tom St Denis 14 GCM implementation, do the GF mult, by Tom St Denis
15 */ 15 */
16 #include "tomcrypt.h" 16 #include "tomcrypt.h"
17 17
18 #if defined(GCM_TABLES) || defined(LRW_TABLES) || ((defined(GCM_MODE) || defined(GCM_MODE)) && defined(LTC_FAST)) 18 #if defined(LTC_GCM_TABLES) || defined(LRW_TABLES) || ((defined(LTC_GCM_MODE) || defined(LTC_GCM_MODE)) && defined(LTC_FAST))
19 19
20 /* this is x*2^128 mod p(x) ... the results are 16 bytes each stored in a packed format. Since only the 20 /* this is x*2^128 mod p(x) ... the results are 16 bytes each stored in a packed format. Since only the
21 * lower 16 bits are not zero'ed I removed the upper 14 bytes */ 21 * lower 16 bits are not zero'ed I removed the upper 14 bytes */
22 const unsigned char gcm_shift_table[256*2] = { 22 const unsigned char gcm_shift_table[256*2] = {
23 0x00, 0x00, 0x01, 0xc2, 0x03, 0x84, 0x02, 0x46, 0x07, 0x08, 0x06, 0xca, 0x04, 0x8c, 0x05, 0x4e, 23 0x00, 0x00, 0x01, 0xc2, 0x03, 0x84, 0x02, 0x46, 0x07, 0x08, 0x06, 0xca, 0x04, 0x8c, 0x05, 0x4e,
54 0xbb, 0xf0, 0xba, 0x32, 0xb8, 0x74, 0xb9, 0xb6, 0xbc, 0xf8, 0xbd, 0x3a, 0xbf, 0x7c, 0xbe, 0xbe }; 54 0xbb, 0xf0, 0xba, 0x32, 0xb8, 0x74, 0xb9, 0xb6, 0xbc, 0xf8, 0xbd, 0x3a, 0xbf, 0x7c, 0xbe, 0xbe };
55 55
56 #endif 56 #endif
57 57
58 58
59 #if defined(GCM_MODE) || defined(LRW_MODE) 59 #if defined(LTC_GCM_MODE) || defined(LRW_MODE)
60 60
61 #ifndef LTC_FAST 61 #ifndef LTC_FAST
62 /* right shift */ 62 /* right shift */
63 static void gcm_rightshift(unsigned char *a) 63 static void gcm_rightshift(unsigned char *a)
64 { 64 {
213 213
214 #endif 214 #endif
215 215
216 #endif 216 #endif
217 217
218 /* $Source: /cvs/libtom/libtomcrypt/src/encauth/gcm/gcm_gf_mult.c,v $ */ 218 /* $Source$ */
219 /* $Revision: 1.23 $ */ 219 /* $Revision$ */
220 /* $Date: 2006/03/31 14:15:35 $ */ 220 /* $Date$ */
221 221