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-rw-r--r--src/encauth/gcm/gcm_add_aad.c8
-rw-r--r--src/encauth/gcm/gcm_add_iv.c6
-rw-r--r--src/encauth/gcm/gcm_done.c10
-rw-r--r--src/encauth/gcm/gcm_gf_mult.c179
-rw-r--r--src/encauth/gcm/gcm_init.c50
-rw-r--r--src/encauth/gcm/gcm_memory.c30
-rw-r--r--src/encauth/gcm/gcm_mult_h.c58
-rw-r--r--src/encauth/gcm/gcm_process.c37
-rw-r--r--src/encauth/gcm/gcm_reset.c6
-rw-r--r--src/encauth/gcm/gcm_test.c69
10 files changed, 334 insertions, 119 deletions
diff --git a/src/encauth/gcm/gcm_add_aad.c b/src/encauth/gcm/gcm_add_aad.c
index 03cb279..6037c6c 100644
--- a/src/encauth/gcm/gcm_add_aad.c
+++ b/src/encauth/gcm/gcm_add_aad.c
@@ -6,7 +6,7 @@
* The library is free for all purposes without any express
* guarantee it works.
*
- * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.org
+ * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.com
*/
/**
@@ -57,7 +57,7 @@ int gcm_add_aad(gcm_state *gcm,
gcm->totlen += gcm->buflen * CONST64(8);
gcm_mult_h(gcm, gcm->X);
}
-
+
/* mix in the length */
zeromem(gcm->buf, 8);
STORE64H(gcm->totlen, gcm->buf+8);
@@ -120,5 +120,5 @@ int gcm_add_aad(gcm_state *gcm,
/* $Source: /cvs/libtom/libtomcrypt/src/encauth/gcm/gcm_add_aad.c,v $ */
-/* $Revision: 1.14 $ */
-/* $Date: 2005/05/05 14:35:58 $ */
+/* $Revision: 1.16 $ */
+/* $Date: 2006/09/23 19:24:21 $ */
diff --git a/src/encauth/gcm/gcm_add_iv.c b/src/encauth/gcm/gcm_add_iv.c
index 107cf35..44e3167 100644
--- a/src/encauth/gcm/gcm_add_iv.c
+++ b/src/encauth/gcm/gcm_add_iv.c
@@ -6,7 +6,7 @@
* The library is free for all purposes without any express
* guarantee it works.
*
- * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.org
+ * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.com
*/
/**
@@ -90,5 +90,5 @@ int gcm_add_iv(gcm_state *gcm,
/* $Source: /cvs/libtom/libtomcrypt/src/encauth/gcm/gcm_add_iv.c,v $ */
-/* $Revision: 1.6 $ */
-/* $Date: 2005/05/05 14:35:58 $ */
+/* $Revision: 1.7 $ */
+/* $Date: 2006/03/31 14:15:35 $ */
diff --git a/src/encauth/gcm/gcm_done.c b/src/encauth/gcm/gcm_done.c
index 96ef7f3..4cbd09f 100644
--- a/src/encauth/gcm/gcm_done.c
+++ b/src/encauth/gcm/gcm_done.c
@@ -6,7 +6,7 @@
* The library is free for all purposes without any express
* guarantee it works.
*
- * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.org
+ * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.com
*/
/**
@@ -62,7 +62,9 @@ int gcm_done(gcm_state *gcm,
gcm_mult_h(gcm, gcm->X);
/* encrypt original counter */
- cipher_descriptor[gcm->cipher].ecb_encrypt(gcm->Y_0, gcm->buf, &gcm->K);
+ if ((err = cipher_descriptor[gcm->cipher].ecb_encrypt(gcm->Y_0, gcm->buf, &gcm->K)) != CRYPT_OK) {
+ return err;
+ }
for (x = 0; x < 16 && x < *taglen; x++) {
tag[x] = gcm->buf[x] ^ gcm->X[x];
}
@@ -77,5 +79,5 @@ int gcm_done(gcm_state *gcm,
/* $Source: /cvs/libtom/libtomcrypt/src/encauth/gcm/gcm_done.c,v $ */
-/* $Revision: 1.7 $ */
-/* $Date: 2005/05/05 14:35:58 $ */
+/* $Revision: 1.9 $ */
+/* $Date: 2006/03/31 14:15:35 $ */
diff --git a/src/encauth/gcm/gcm_gf_mult.c b/src/encauth/gcm/gcm_gf_mult.c
index 06db22b..52e82dd 100644
--- a/src/encauth/gcm/gcm_gf_mult.c
+++ b/src/encauth/gcm/gcm_gf_mult.c
@@ -6,17 +6,59 @@
* The library is free for all purposes without any express
* guarantee it works.
*
- * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.org
+ * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.com
*/
/**
@file gcm_gf_mult.c
- GCM implementation, initialize state, by Tom St Denis
+ GCM implementation, do the GF mult, by Tom St Denis
*/
#include "tomcrypt.h"
-#ifdef GCM_MODE
+#if defined(GCM_TABLES) || defined(LRW_TABLES) || ((defined(GCM_MODE) || defined(GCM_MODE)) && defined(LTC_FAST))
+/* this is x*2^128 mod p(x) ... the results are 16 bytes each stored in a packed format. Since only the
+ * lower 16 bits are not zero'ed I removed the upper 14 bytes */
+const unsigned char gcm_shift_table[256*2] = {
+0x00, 0x00, 0x01, 0xc2, 0x03, 0x84, 0x02, 0x46, 0x07, 0x08, 0x06, 0xca, 0x04, 0x8c, 0x05, 0x4e,
+0x0e, 0x10, 0x0f, 0xd2, 0x0d, 0x94, 0x0c, 0x56, 0x09, 0x18, 0x08, 0xda, 0x0a, 0x9c, 0x0b, 0x5e,
+0x1c, 0x20, 0x1d, 0xe2, 0x1f, 0xa4, 0x1e, 0x66, 0x1b, 0x28, 0x1a, 0xea, 0x18, 0xac, 0x19, 0x6e,
+0x12, 0x30, 0x13, 0xf2, 0x11, 0xb4, 0x10, 0x76, 0x15, 0x38, 0x14, 0xfa, 0x16, 0xbc, 0x17, 0x7e,
+0x38, 0x40, 0x39, 0x82, 0x3b, 0xc4, 0x3a, 0x06, 0x3f, 0x48, 0x3e, 0x8a, 0x3c, 0xcc, 0x3d, 0x0e,
+0x36, 0x50, 0x37, 0x92, 0x35, 0xd4, 0x34, 0x16, 0x31, 0x58, 0x30, 0x9a, 0x32, 0xdc, 0x33, 0x1e,
+0x24, 0x60, 0x25, 0xa2, 0x27, 0xe4, 0x26, 0x26, 0x23, 0x68, 0x22, 0xaa, 0x20, 0xec, 0x21, 0x2e,
+0x2a, 0x70, 0x2b, 0xb2, 0x29, 0xf4, 0x28, 0x36, 0x2d, 0x78, 0x2c, 0xba, 0x2e, 0xfc, 0x2f, 0x3e,
+0x70, 0x80, 0x71, 0x42, 0x73, 0x04, 0x72, 0xc6, 0x77, 0x88, 0x76, 0x4a, 0x74, 0x0c, 0x75, 0xce,
+0x7e, 0x90, 0x7f, 0x52, 0x7d, 0x14, 0x7c, 0xd6, 0x79, 0x98, 0x78, 0x5a, 0x7a, 0x1c, 0x7b, 0xde,
+0x6c, 0xa0, 0x6d, 0x62, 0x6f, 0x24, 0x6e, 0xe6, 0x6b, 0xa8, 0x6a, 0x6a, 0x68, 0x2c, 0x69, 0xee,
+0x62, 0xb0, 0x63, 0x72, 0x61, 0x34, 0x60, 0xf6, 0x65, 0xb8, 0x64, 0x7a, 0x66, 0x3c, 0x67, 0xfe,
+0x48, 0xc0, 0x49, 0x02, 0x4b, 0x44, 0x4a, 0x86, 0x4f, 0xc8, 0x4e, 0x0a, 0x4c, 0x4c, 0x4d, 0x8e,
+0x46, 0xd0, 0x47, 0x12, 0x45, 0x54, 0x44, 0x96, 0x41, 0xd8, 0x40, 0x1a, 0x42, 0x5c, 0x43, 0x9e,
+0x54, 0xe0, 0x55, 0x22, 0x57, 0x64, 0x56, 0xa6, 0x53, 0xe8, 0x52, 0x2a, 0x50, 0x6c, 0x51, 0xae,
+0x5a, 0xf0, 0x5b, 0x32, 0x59, 0x74, 0x58, 0xb6, 0x5d, 0xf8, 0x5c, 0x3a, 0x5e, 0x7c, 0x5f, 0xbe,
+0xe1, 0x00, 0xe0, 0xc2, 0xe2, 0x84, 0xe3, 0x46, 0xe6, 0x08, 0xe7, 0xca, 0xe5, 0x8c, 0xe4, 0x4e,
+0xef, 0x10, 0xee, 0xd2, 0xec, 0x94, 0xed, 0x56, 0xe8, 0x18, 0xe9, 0xda, 0xeb, 0x9c, 0xea, 0x5e,
+0xfd, 0x20, 0xfc, 0xe2, 0xfe, 0xa4, 0xff, 0x66, 0xfa, 0x28, 0xfb, 0xea, 0xf9, 0xac, 0xf8, 0x6e,
+0xf3, 0x30, 0xf2, 0xf2, 0xf0, 0xb4, 0xf1, 0x76, 0xf4, 0x38, 0xf5, 0xfa, 0xf7, 0xbc, 0xf6, 0x7e,
+0xd9, 0x40, 0xd8, 0x82, 0xda, 0xc4, 0xdb, 0x06, 0xde, 0x48, 0xdf, 0x8a, 0xdd, 0xcc, 0xdc, 0x0e,
+0xd7, 0x50, 0xd6, 0x92, 0xd4, 0xd4, 0xd5, 0x16, 0xd0, 0x58, 0xd1, 0x9a, 0xd3, 0xdc, 0xd2, 0x1e,
+0xc5, 0x60, 0xc4, 0xa2, 0xc6, 0xe4, 0xc7, 0x26, 0xc2, 0x68, 0xc3, 0xaa, 0xc1, 0xec, 0xc0, 0x2e,
+0xcb, 0x70, 0xca, 0xb2, 0xc8, 0xf4, 0xc9, 0x36, 0xcc, 0x78, 0xcd, 0xba, 0xcf, 0xfc, 0xce, 0x3e,
+0x91, 0x80, 0x90, 0x42, 0x92, 0x04, 0x93, 0xc6, 0x96, 0x88, 0x97, 0x4a, 0x95, 0x0c, 0x94, 0xce,
+0x9f, 0x90, 0x9e, 0x52, 0x9c, 0x14, 0x9d, 0xd6, 0x98, 0x98, 0x99, 0x5a, 0x9b, 0x1c, 0x9a, 0xde,
+0x8d, 0xa0, 0x8c, 0x62, 0x8e, 0x24, 0x8f, 0xe6, 0x8a, 0xa8, 0x8b, 0x6a, 0x89, 0x2c, 0x88, 0xee,
+0x83, 0xb0, 0x82, 0x72, 0x80, 0x34, 0x81, 0xf6, 0x84, 0xb8, 0x85, 0x7a, 0x87, 0x3c, 0x86, 0xfe,
+0xa9, 0xc0, 0xa8, 0x02, 0xaa, 0x44, 0xab, 0x86, 0xae, 0xc8, 0xaf, 0x0a, 0xad, 0x4c, 0xac, 0x8e,
+0xa7, 0xd0, 0xa6, 0x12, 0xa4, 0x54, 0xa5, 0x96, 0xa0, 0xd8, 0xa1, 0x1a, 0xa3, 0x5c, 0xa2, 0x9e,
+0xb5, 0xe0, 0xb4, 0x22, 0xb6, 0x64, 0xb7, 0xa6, 0xb2, 0xe8, 0xb3, 0x2a, 0xb1, 0x6c, 0xb0, 0xae,
+0xbb, 0xf0, 0xba, 0x32, 0xb8, 0x74, 0xb9, 0xb6, 0xbc, 0xf8, 0xbd, 0x3a, 0xbf, 0x7c, 0xbe, 0xbe };
+
+#endif
+
+
+#if defined(GCM_MODE) || defined(LRW_MODE)
+
+#ifndef LTC_FAST
/* right shift */
static void gcm_rightshift(unsigned char *a)
{
@@ -33,7 +75,7 @@ static const unsigned char poly[] = { 0x00, 0xE1 };
/**
- GCM GF multiplier (internal use only)
+ GCM GF multiplier (internal use only) bitserial
@param a First value
@param b Second value
@param c Destination for a * b
@@ -58,37 +100,122 @@ void gcm_gf_mult(const unsigned char *a, const unsigned char *b, unsigned char *
XMEMCPY(c, Z, 16);
}
+#else
+
+/* map normal numbers to "ieee" way ... e.g. bit reversed */
+#define M(x) ( ((x&8)>>3) | ((x&4)>>1) | ((x&2)<<1) | ((x&1)<<3) )
+
+#define BPD (sizeof(LTC_FAST_TYPE) * 8)
+#define WPV (1 + (16 / sizeof(LTC_FAST_TYPE)))
+
/**
- GCM multiply by H
- @param gcm The GCM state which holds the H value
- @param I The value to multiply H by
- */
-void gcm_mult_h(gcm_state *gcm, unsigned char *I)
+ GCM GF multiplier (internal use only) word oriented
+ @param a First value
+ @param b Second value
+ @param c Destination for a * b
+ */
+void gcm_gf_mult(const unsigned char *a, const unsigned char *b, unsigned char *c)
{
- unsigned char T[16];
-#ifdef GCM_TABLES
- int x, y;
- XMEMCPY(T, &gcm->PC[0][I[0]][0], 16);
- for (x = 1; x < 16; x++) {
-#ifdef LTC_FAST
- for (y = 0; y < 16; y += sizeof(LTC_FAST_TYPE)) {
- *((LTC_FAST_TYPE *)(T + y)) ^= *((LTC_FAST_TYPE *)(&gcm->PC[x][I[x]][y]));
+ int i, j, k, u;
+ LTC_FAST_TYPE B[16][WPV], tmp[32 / sizeof(LTC_FAST_TYPE)], pB[16 / sizeof(LTC_FAST_TYPE)], zz, z;
+ unsigned char pTmp[32];
+
+ /* create simple tables */
+ zeromem(B[0], sizeof(B[0]));
+ zeromem(B[M(1)], sizeof(B[M(1)]));
+
+#ifdef ENDIAN_32BITWORD
+ for (i = 0; i < 4; i++) {
+ LOAD32H(B[M(1)][i], a + (i<<2));
+ LOAD32L(pB[i], b + (i<<2));
+ }
+#else
+ for (i = 0; i < 2; i++) {
+ LOAD64H(B[M(1)][i], a + (i<<3));
+ LOAD64L(pB[i], b + (i<<3));
+ }
+#endif
+
+ /* now create 2, 4 and 8 */
+ B[M(2)][0] = B[M(1)][0] >> 1;
+ B[M(4)][0] = B[M(1)][0] >> 2;
+ B[M(8)][0] = B[M(1)][0] >> 3;
+ for (i = 1; i < (int)WPV; i++) {
+ B[M(2)][i] = (B[M(1)][i-1] << (BPD-1)) | (B[M(1)][i] >> 1);
+ B[M(4)][i] = (B[M(1)][i-1] << (BPD-2)) | (B[M(1)][i] >> 2);
+ B[M(8)][i] = (B[M(1)][i-1] << (BPD-3)) | (B[M(1)][i] >> 3);
+ }
+
+ /* now all values with two bits which are 3, 5, 6, 9, 10, 12 */
+ for (i = 0; i < (int)WPV; i++) {
+ B[M(3)][i] = B[M(1)][i] ^ B[M(2)][i];
+ B[M(5)][i] = B[M(1)][i] ^ B[M(4)][i];
+ B[M(6)][i] = B[M(2)][i] ^ B[M(4)][i];
+ B[M(9)][i] = B[M(1)][i] ^ B[M(8)][i];
+ B[M(10)][i] = B[M(2)][i] ^ B[M(8)][i];
+ B[M(12)][i] = B[M(8)][i] ^ B[M(4)][i];
+
+ /* now all 3 bit values and the only 4 bit value: 7, 11, 13, 14, 15 */
+ B[M(7)][i] = B[M(3)][i] ^ B[M(4)][i];
+ B[M(11)][i] = B[M(3)][i] ^ B[M(8)][i];
+ B[M(13)][i] = B[M(1)][i] ^ B[M(12)][i];
+ B[M(14)][i] = B[M(6)][i] ^ B[M(8)][i];
+ B[M(15)][i] = B[M(7)][i] ^ B[M(8)][i];
+ }
+
+ zeromem(tmp, sizeof(tmp));
+
+ /* compute product four bits of each word at a time */
+ /* for each nibble */
+ for (i = (BPD/4)-1; i >= 0; i--) {
+ /* for each word */
+ for (j = 0; j < (int)(WPV-1); j++) {
+ /* grab the 4 bits recall the nibbles are backwards so it's a shift by (i^1)*4 */
+ u = (pB[j] >> ((i^1)<<2)) & 15;
+
+ /* add offset by the word count the table looked up value to the result */
+ for (k = 0; k < (int)WPV; k++) {
+ tmp[k+j] ^= B[u][k];
+ }
}
-#else
- for (y = 0; y < 16; y++) {
- T[y] ^= gcm->PC[x][I[x]][y];
+ /* shift result up by 4 bits */
+ if (i != 0) {
+ for (z = j = 0; j < (int)(32 / sizeof(LTC_FAST_TYPE)); j++) {
+ zz = tmp[j] << (BPD-4);
+ tmp[j] = (tmp[j] >> 4) | z;
+ z = zz;
+ }
}
-#endif
}
-#else
- gcm_gf_mult(gcm->H, I, T);
+
+ /* store product */
+#ifdef ENDIAN_32BITWORD
+ for (i = 0; i < 8; i++) {
+ STORE32H(tmp[i], pTmp + (i<<2));
+ }
+#else
+ for (i = 0; i < 4; i++) {
+ STORE64H(tmp[i], pTmp + (i<<3));
+ }
#endif
- XMEMCPY(I, T, 16);
+
+ /* reduce by taking most significant byte and adding the appropriate two byte sequence 16 bytes down */
+ for (i = 31; i >= 16; i--) {
+ pTmp[i-16] ^= gcm_shift_table[((unsigned)pTmp[i]<<1)];
+ pTmp[i-15] ^= gcm_shift_table[((unsigned)pTmp[i]<<1)+1];
+ }
+
+ for (i = 0; i < 16; i++) {
+ c[i] = pTmp[i];
+ }
+
}
+#endif
#endif
/* $Source: /cvs/libtom/libtomcrypt/src/encauth/gcm/gcm_gf_mult.c,v $ */
-/* $Revision: 1.16 $ */
-/* $Date: 2005/05/21 14:33:42 $ */
+/* $Revision: 1.23 $ */
+/* $Date: 2006/03/31 14:15:35 $ */
+
diff --git a/src/encauth/gcm/gcm_init.c b/src/encauth/gcm/gcm_init.c
index 249b61d..c0f7a5a 100644
--- a/src/encauth/gcm/gcm_init.c
+++ b/src/encauth/gcm/gcm_init.c
@@ -6,7 +6,7 @@
* The library is free for all purposes without any express
* guarantee it works.
*
- * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.org
+ * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.com
*/
/**
@@ -17,46 +17,6 @@
#ifdef GCM_MODE
-#ifdef GCM_TABLES
-
-/* this is x*2^128 mod p(x) ... the results are 16 bytes each stored in a packed format. Since only the
- * lower 16 bits are not zero'ed I removed the upper 14 bytes */
-static const unsigned char gcm_shift_table[256*2] = {
-0x00, 0x00, 0x01, 0xc2, 0x03, 0x84, 0x02, 0x46, 0x07, 0x08, 0x06, 0xca, 0x04, 0x8c, 0x05, 0x4e,
-0x0e, 0x10, 0x0f, 0xd2, 0x0d, 0x94, 0x0c, 0x56, 0x09, 0x18, 0x08, 0xda, 0x0a, 0x9c, 0x0b, 0x5e,
-0x1c, 0x20, 0x1d, 0xe2, 0x1f, 0xa4, 0x1e, 0x66, 0x1b, 0x28, 0x1a, 0xea, 0x18, 0xac, 0x19, 0x6e,
-0x12, 0x30, 0x13, 0xf2, 0x11, 0xb4, 0x10, 0x76, 0x15, 0x38, 0x14, 0xfa, 0x16, 0xbc, 0x17, 0x7e,
-0x38, 0x40, 0x39, 0x82, 0x3b, 0xc4, 0x3a, 0x06, 0x3f, 0x48, 0x3e, 0x8a, 0x3c, 0xcc, 0x3d, 0x0e,
-0x36, 0x50, 0x37, 0x92, 0x35, 0xd4, 0x34, 0x16, 0x31, 0x58, 0x30, 0x9a, 0x32, 0xdc, 0x33, 0x1e,
-0x24, 0x60, 0x25, 0xa2, 0x27, 0xe4, 0x26, 0x26, 0x23, 0x68, 0x22, 0xaa, 0x20, 0xec, 0x21, 0x2e,
-0x2a, 0x70, 0x2b, 0xb2, 0x29, 0xf4, 0x28, 0x36, 0x2d, 0x78, 0x2c, 0xba, 0x2e, 0xfc, 0x2f, 0x3e,
-0x70, 0x80, 0x71, 0x42, 0x73, 0x04, 0x72, 0xc6, 0x77, 0x88, 0x76, 0x4a, 0x74, 0x0c, 0x75, 0xce,
-0x7e, 0x90, 0x7f, 0x52, 0x7d, 0x14, 0x7c, 0xd6, 0x79, 0x98, 0x78, 0x5a, 0x7a, 0x1c, 0x7b, 0xde,
-0x6c, 0xa0, 0x6d, 0x62, 0x6f, 0x24, 0x6e, 0xe6, 0x6b, 0xa8, 0x6a, 0x6a, 0x68, 0x2c, 0x69, 0xee,
-0x62, 0xb0, 0x63, 0x72, 0x61, 0x34, 0x60, 0xf6, 0x65, 0xb8, 0x64, 0x7a, 0x66, 0x3c, 0x67, 0xfe,
-0x48, 0xc0, 0x49, 0x02, 0x4b, 0x44, 0x4a, 0x86, 0x4f, 0xc8, 0x4e, 0x0a, 0x4c, 0x4c, 0x4d, 0x8e,
-0x46, 0xd0, 0x47, 0x12, 0x45, 0x54, 0x44, 0x96, 0x41, 0xd8, 0x40, 0x1a, 0x42, 0x5c, 0x43, 0x9e,
-0x54, 0xe0, 0x55, 0x22, 0x57, 0x64, 0x56, 0xa6, 0x53, 0xe8, 0x52, 0x2a, 0x50, 0x6c, 0x51, 0xae,
-0x5a, 0xf0, 0x5b, 0x32, 0x59, 0x74, 0x58, 0xb6, 0x5d, 0xf8, 0x5c, 0x3a, 0x5e, 0x7c, 0x5f, 0xbe,
-0xe1, 0x00, 0xe0, 0xc2, 0xe2, 0x84, 0xe3, 0x46, 0xe6, 0x08, 0xe7, 0xca, 0xe5, 0x8c, 0xe4, 0x4e,
-0xef, 0x10, 0xee, 0xd2, 0xec, 0x94, 0xed, 0x56, 0xe8, 0x18, 0xe9, 0xda, 0xeb, 0x9c, 0xea, 0x5e,
-0xfd, 0x20, 0xfc, 0xe2, 0xfe, 0xa4, 0xff, 0x66, 0xfa, 0x28, 0xfb, 0xea, 0xf9, 0xac, 0xf8, 0x6e,
-0xf3, 0x30, 0xf2, 0xf2, 0xf0, 0xb4, 0xf1, 0x76, 0xf4, 0x38, 0xf5, 0xfa, 0xf7, 0xbc, 0xf6, 0x7e,
-0xd9, 0x40, 0xd8, 0x82, 0xda, 0xc4, 0xdb, 0x06, 0xde, 0x48, 0xdf, 0x8a, 0xdd, 0xcc, 0xdc, 0x0e,
-0xd7, 0x50, 0xd6, 0x92, 0xd4, 0xd4, 0xd5, 0x16, 0xd0, 0x58, 0xd1, 0x9a, 0xd3, 0xdc, 0xd2, 0x1e,
-0xc5, 0x60, 0xc4, 0xa2, 0xc6, 0xe4, 0xc7, 0x26, 0xc2, 0x68, 0xc3, 0xaa, 0xc1, 0xec, 0xc0, 0x2e,
-0xcb, 0x70, 0xca, 0xb2, 0xc8, 0xf4, 0xc9, 0x36, 0xcc, 0x78, 0xcd, 0xba, 0xcf, 0xfc, 0xce, 0x3e,
-0x91, 0x80, 0x90, 0x42, 0x92, 0x04, 0x93, 0xc6, 0x96, 0x88, 0x97, 0x4a, 0x95, 0x0c, 0x94, 0xce,
-0x9f, 0x90, 0x9e, 0x52, 0x9c, 0x14, 0x9d, 0xd6, 0x98, 0x98, 0x99, 0x5a, 0x9b, 0x1c, 0x9a, 0xde,
-0x8d, 0xa0, 0x8c, 0x62, 0x8e, 0x24, 0x8f, 0xe6, 0x8a, 0xa8, 0x8b, 0x6a, 0x89, 0x2c, 0x88, 0xee,
-0x83, 0xb0, 0x82, 0x72, 0x80, 0x34, 0x81, 0xf6, 0x84, 0xb8, 0x85, 0x7a, 0x87, 0x3c, 0x86, 0xfe,
-0xa9, 0xc0, 0xa8, 0x02, 0xaa, 0x44, 0xab, 0x86, 0xae, 0xc8, 0xaf, 0x0a, 0xad, 0x4c, 0xac, 0x8e,
-0xa7, 0xd0, 0xa6, 0x12, 0xa4, 0x54, 0xa5, 0x96, 0xa0, 0xd8, 0xa1, 0x1a, 0xa3, 0x5c, 0xa2, 0x9e,
-0xb5, 0xe0, 0xb4, 0x22, 0xb6, 0x64, 0xb7, 0xa6, 0xb2, 0xe8, 0xb3, 0x2a, 0xb1, 0x6c, 0xb0, 0xae,
-0xbb, 0xf0, 0xba, 0x32, 0xb8, 0x74, 0xb9, 0xb6, 0xbc, 0xf8, 0xbd, 0x3a, 0xbf, 0x7c, 0xbe, 0xbe };
-
-#endif
-
/**
Initialize a GCM state
@param gcm The GCM state to initialize
@@ -98,7 +58,9 @@ int gcm_init(gcm_state *gcm, int cipher,
/* H = E(0) */
zeromem(B, 16);
- cipher_descriptor[cipher].ecb_encrypt(B, gcm->H, &gcm->K);
+ if ((err = cipher_descriptor[cipher].ecb_encrypt(B, gcm->H, &gcm->K)) != CRYPT_OK) {
+ return err;
+ }
/* setup state */
zeromem(gcm->buf, sizeof(gcm->buf));
@@ -141,5 +103,5 @@ int gcm_init(gcm_state *gcm, int cipher,
#endif
/* $Source: /cvs/libtom/libtomcrypt/src/encauth/gcm/gcm_init.c,v $ */
-/* $Revision: 1.15 $ */
-/* $Date: 2005/05/21 15:05:19 $ */
+/* $Revision: 1.18 $ */
+/* $Date: 2006/03/31 14:15:35 $ */
diff --git a/src/encauth/gcm/gcm_memory.c b/src/encauth/gcm/gcm_memory.c
index ee10d3f..ddec010 100644
--- a/src/encauth/gcm/gcm_memory.c
+++ b/src/encauth/gcm/gcm_memory.c
@@ -6,7 +6,7 @@
* The library is free for all purposes without any express
* guarantee it works.
*
- * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.org
+ * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.com
*/
/**
@@ -43,6 +43,7 @@ int gcm_memory( int cipher,
unsigned char *tag, unsigned long *taglen,
int direction)
{
+ void *orig;
gcm_state *gcm;
int err;
@@ -51,7 +52,8 @@ int gcm_memory( int cipher,
}
if (cipher_descriptor[cipher].accel_gcm_memory != NULL) {
- cipher_descriptor[cipher].accel_gcm_memory
+ return
+ cipher_descriptor[cipher].accel_gcm_memory
(key, keylen,
IV, IVlen,
adata, adatalen,
@@ -59,15 +61,29 @@ int gcm_memory( int cipher,
ct,
tag, taglen,
direction);
- return CRYPT_OK;
}
- gcm = XMALLOC(sizeof(*gcm));
+
+#ifndef GCM_TABLES_SSE2
+ orig = gcm = XMALLOC(sizeof(*gcm));
+#else
+ orig = gcm = XMALLOC(sizeof(*gcm) + 16);
+#endif
if (gcm == NULL) {
return CRYPT_MEM;
}
+ /* Force GCM to be on a multiple of 16 so we can use 128-bit aligned operations
+ * note that we only modify gcm and keep orig intact. This code is not portable
+ * but again it's only for SSE2 anyways, so who cares?
+ */
+#ifdef GCM_TABLES_SSE2
+ if ((unsigned long)gcm & 15) {
+ gcm = (gcm_state *)((unsigned long)gcm + (16 - ((unsigned long)gcm & 15)));
+ }
+#endif
+
if ((err = gcm_init(gcm, cipher, key, keylen)) != CRYPT_OK) {
goto LTC_ERR;
}
@@ -82,12 +98,12 @@ int gcm_memory( int cipher,
}
err = gcm_done(gcm, tag, taglen);
LTC_ERR:
- XFREE(gcm);
+ XFREE(orig);
return err;
}
#endif
/* $Source: /cvs/libtom/libtomcrypt/src/encauth/gcm/gcm_memory.c,v $ */
-/* $Revision: 1.19 $ */
-/* $Date: 2005/05/05 14:35:58 $ */
+/* $Revision: 1.23 $ */
+/* $Date: 2006/09/07 10:00:57 $ */
diff --git a/src/encauth/gcm/gcm_mult_h.c b/src/encauth/gcm/gcm_mult_h.c
new file mode 100644
index 0000000..8391e00
--- /dev/null
+++ b/src/encauth/gcm/gcm_mult_h.c
@@ -0,0 +1,58 @@
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis
+ *
+ * LibTomCrypt is a library that provides various cryptographic
+ * algorithms in a highly modular and flexible manner.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ *
+ * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.com
+ */
+
+/**
+ @file gcm_mult_h.c
+ GCM implementation, do the GF mult, by Tom St Denis
+*/
+#include "tomcrypt.h"
+
+#if defined(GCM_MODE)
+/**
+ GCM multiply by H
+ @param gcm The GCM state which holds the H value
+ @param I The value to multiply H by
+ */
+void gcm_mult_h(gcm_state *gcm, unsigned char *I)
+{
+ unsigned char T[16];
+#ifdef GCM_TABLES
+ int x, y;
+#ifdef GCM_TABLES_SSE2
+ asm("movdqa (%0),%%xmm0"::"r"(&gcm->PC[0][I[0]][0]));
+ for (x = 1; x < 16; x++) {
+ asm("pxor (%0),%%xmm0"::"r"(&gcm->PC[x][I[x]][0]));
+ }
+ asm("movdqa %%xmm0,(%0)"::"r"(&T));
+#else
+ XMEMCPY(T, &gcm->PC[0][I[0]][0], 16);
+ for (x = 1; x < 16; x++) {
+#ifdef LTC_FAST
+ for (y = 0; y < 16; y += sizeof(LTC_FAST_TYPE)) {
+ *((LTC_FAST_TYPE *)(T + y)) ^= *((LTC_FAST_TYPE *)(&gcm->PC[x][I[x]][y]));
+ }
+#else
+ for (y = 0; y < 16; y++) {
+ T[y] ^= gcm->PC[x][I[x]][y];
+ }
+#endif /* LTC_FAST */
+ }
+#endif /* GCM_TABLES_SSE2 */
+#else
+ gcm_gf_mult(gcm->H, I, T);
+#endif
+ XMEMCPY(I, T, 16);
+}
+#endif
+
+/* $Source: /cvs/libtom/libtomcrypt/src/encauth/gcm/gcm_mult_h.c,v $ */
+/* $Revision: 1.4 $ */
+/* $Date: 2006/08/23 20:40:23 $ */
diff --git a/src/encauth/gcm/gcm_process.c b/src/encauth/gcm/gcm_process.c
index f512e28..f4d21d3 100644
--- a/src/encauth/gcm/gcm_process.c
+++ b/src/encauth/gcm/gcm_process.c
@@ -6,7 +6,7 @@
* The library is free for all purposes without any express
* guarantee it works.
*
- * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.org
+ * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.com
*/
/**
@@ -31,9 +31,9 @@ int gcm_process(gcm_state *gcm,
unsigned char *ct,
int direction)
{
- unsigned long x, y;
+ unsigned long x;
+ int y, err;
unsigned char b;
- int err;
LTC_ARGCHK(gcm != NULL);
if (ptlen > 0) {
@@ -59,10 +59,12 @@ int gcm_process(gcm_state *gcm,
/* increment counter */
for (y = 15; y >= 12; y--) {
- if (++gcm->Y[y]) { break; }
+ if (++gcm->Y[y] & 255) { break; }
}
/* encrypt the counter */
- cipher_descriptor[gcm->cipher].ecb_encrypt(gcm->Y, gcm->buf, &gcm->K);
+ if ((err = cipher_descriptor[gcm->cipher].ecb_encrypt(gcm->Y, gcm->buf, &gcm->K)) != CRYPT_OK) {
+ return err;
+ }
gcm->buflen = 0;
gcm->mode = GCM_MODE_TEXT;
@@ -87,9 +89,11 @@ int gcm_process(gcm_state *gcm,
gcm_mult_h(gcm, gcm->X);
/* increment counter */
for (y = 15; y >= 12; y--) {
- if (++gcm->Y[y]) { break; }
+ if (++gcm->Y[y] & 255) { break; }
+ }
+ if ((err = cipher_descriptor[gcm->cipher].ecb_encrypt(gcm->Y, gcm->buf, &gcm->K)) != CRYPT_OK) {
+ return err;
}
- cipher_descriptor[gcm->cipher].ecb_encrypt(gcm->Y, gcm->buf, &gcm->K);
}
} else {
for (x = 0; x < (ptlen & ~15); x += 16) {
@@ -103,9 +107,11 @@ int gcm_process(gcm_state *gcm,
gcm_mult_h(gcm, gcm->X);
/* increment counter */
for (y = 15; y >= 12; y--) {
- if (++gcm->Y[y]) { break; }
+ if (++gcm->Y[y] & 255) { break; }
+ }
+ if ((err = cipher_descriptor[gcm->cipher].ecb_encrypt(gcm->Y, gcm->buf, &gcm->K)) != CRYPT_OK) {
+ return err;
}
- cipher_descriptor[gcm->cipher].ecb_encrypt(gcm->Y, gcm->buf, &gcm->K);
}
}
}
@@ -119,9 +125,11 @@ int gcm_process(gcm_state *gcm,
/* increment counter */
for (y = 15; y >= 12; y--) {
- if (++gcm->Y[y]) { break; }
+ if (++gcm->Y[y] & 255) { break; }
+ }
+ if ((err = cipher_descriptor[gcm->cipher].ecb_encrypt(gcm->Y, gcm->buf, &gcm->K)) != CRYPT_OK) {
+ return err;
}
- cipher_descriptor[gcm->cipher].ecb_encrypt(gcm->Y, gcm->buf, &gcm->K);
gcm->buflen = 0;
}
@@ -137,11 +145,8 @@ int gcm_process(gcm_state *gcm,
return CRYPT_OK;
}
-
-
#endif
-
/* $Source: /cvs/libtom/libtomcrypt/src/encauth/gcm/gcm_process.c,v $ */
-/* $Revision: 1.8 $ */
-/* $Date: 2005/05/05 14:35:58 $ */
+/* $Revision: 1.14 $ */
+/* $Date: 2006/11/19 19:33:36 $ */
diff --git a/src/encauth/gcm/gcm_reset.c b/src/encauth/gcm/gcm_reset.c
index b336a92..a6a8522 100644
--- a/src/encauth/gcm/gcm_reset.c
+++ b/src/encauth/gcm/gcm_reset.c
@@ -6,7 +6,7 @@
* The library is free for all purposes without any express
* guarantee it works.
*
- * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.org
+ * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.com
*/
/**
@@ -40,5 +40,5 @@ int gcm_reset(gcm_state *gcm)
#endif
/* $Source: /cvs/libtom/libtomcrypt/src/encauth/gcm/gcm_reset.c,v $ */
-/* $Revision: 1.3 $ */
-/* $Date: 2005/05/05 14:35:58 $ */
+/* $Revision: 1.4 $ */
+/* $Date: 2006/03/31 14:15:35 $ */
diff --git a/src/encauth/gcm/gcm_test.c b/src/encauth/gcm/gcm_test.c
index 7106188..2f8539b 100644
--- a/src/encauth/gcm/gcm_test.c
+++ b/src/encauth/gcm/gcm_test.c
@@ -6,7 +6,7 @@
* The library is free for all purposes without any express
* guarantee it works.
*
- * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.org
+ * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.com
*/
/**
@@ -29,13 +29,13 @@ int gcm_test(void)
static const struct {
unsigned char K[32];
int keylen;
- unsigned char P[64];
+ unsigned char P[128];
unsigned long ptlen;
- unsigned char A[64];
+ unsigned char A[128];
unsigned long alen;
- unsigned char IV[64];
+ unsigned char IV[128];
unsigned long IVlen;
- unsigned char C[64];
+ unsigned char C[128];
unsigned char T[16];
} tests[] = {
@@ -275,13 +275,58 @@ int gcm_test(void)
/* TAG */
{ 0x61, 0x9c, 0xc5, 0xae, 0xff, 0xfe, 0x0b, 0xfa,
0x46, 0x2a, 0xf4, 0x3c, 0x16, 0x99, 0xd0, 0x50, }
+},
+
+/* test case #46 from BG (catches the LTC bug of v1.15) */
+{
+ /* key */
+ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+ 16,
+
+ /* PT */
+ { 0xa2, 0xaa, 0xb3, 0xad, 0x8b, 0x17, 0xac, 0xdd,
+ 0xa2, 0x88, 0x42, 0x6c, 0xd7, 0xc4, 0x29, 0xb7,
+ 0xca, 0x86, 0xb7, 0xac, 0xa0, 0x58, 0x09, 0xc7,
+ 0x0c, 0xe8, 0x2d, 0xb2, 0x57, 0x11, 0xcb, 0x53,
+ 0x02, 0xeb, 0x27, 0x43, 0xb0, 0x36, 0xf3, 0xd7,
+ 0x50, 0xd6, 0xcf, 0x0d, 0xc0, 0xac, 0xb9, 0x29,
+ 0x50, 0xd5, 0x46, 0xdb, 0x30, 0x8f, 0x93, 0xb4,
+ 0xff, 0x24, 0x4a, 0xfa, 0x9d, 0xc7, 0x2b, 0xcd,
+ 0x75, 0x8d, 0x2c },
+ 67,
+
+ /* ADATA */
+ { 0x68, 0x8e, 0x1a, 0xa9, 0x84, 0xde, 0x92, 0x6d,
+ 0xc7, 0xb4, 0xc4, 0x7f, 0x44 },
+ 13,
+
+ /* IV */
+ { 0xb7, 0x21, 0x38, 0xb5, 0xa0, 0x5f, 0xf5, 0x07,
+ 0x0e, 0x8c, 0xd9, 0x41, 0x83, 0xf7, 0x61, 0xd8 },
+ 16,
+
+ /* CT */
+ { 0xcb, 0xc8, 0xd2, 0xf1, 0x54, 0x81, 0xa4, 0xcc,
+ 0x7d, 0xd1, 0xe1, 0x9a, 0xaa, 0x83, 0xde, 0x56,
+ 0x78, 0x48, 0x3e, 0xc3, 0x59, 0xae, 0x7d, 0xec,
+ 0x2a, 0xb8, 0xd5, 0x34, 0xe0, 0x90, 0x6f, 0x4b,
+ 0x46, 0x63, 0xfa, 0xff, 0x58, 0xa8, 0xb2, 0xd7,
+ 0x33, 0xb8, 0x45, 0xee, 0xf7, 0xc9, 0xb3, 0x31,
+ 0xe9, 0xe1, 0x0e, 0xb2, 0x61, 0x2c, 0x99, 0x5f,
+ 0xeb, 0x1a, 0xc1, 0x5a, 0x62, 0x86, 0xcc, 0xe8,
+ 0xb2, 0x97, 0xa8 },
+
+ /* TAG */
+ { 0x8d, 0x2d, 0x2a, 0x93, 0x72, 0x62, 0x6f, 0x6b,
+ 0xee, 0x85, 0x80, 0x27, 0x6a, 0x63, 0x66, 0xbf }
}
/* rest of test cases are the same except AES key size changes... ignored... */
};
int idx, err;
unsigned long x, y;
- unsigned char out[2][64], T[2][16];
+ unsigned char out[2][128], T[2][16];
/* find aes */
idx = find_cipher("aes");
@@ -302,7 +347,7 @@ int gcm_test(void)
return err;
}
- if (memcmp(out[0], tests[x].C, tests[x].ptlen)) {
+ if (XMEMCMP(out[0], tests[x].C, tests[x].ptlen)) {
#if 0
printf("\nCiphertext wrong %lu\n", x);
for (y = 0; y < tests[x].ptlen; y++) {
@@ -313,7 +358,7 @@ int gcm_test(void)
return CRYPT_FAIL_TESTVECTOR;
}
- if (memcmp(T[0], tests[x].T, 16)) {
+ if (XMEMCMP(T[0], tests[x].T, 16)) {
#if 0
printf("\nTag on plaintext wrong %lu\n", x);
for (y = 0; y < 16; y++) {
@@ -333,7 +378,7 @@ int gcm_test(void)
return err;
}
- if (memcmp(out[1], tests[x].P, tests[x].ptlen)) {
+ if (XMEMCMP(out[1], tests[x].P, tests[x].ptlen)) {
#if 0
printf("\nplaintext wrong %lu\n", x);
for (y = 0; y < tests[x].ptlen; y++) {
@@ -344,7 +389,7 @@ int gcm_test(void)
return CRYPT_FAIL_TESTVECTOR;
}
- if (memcmp(T[1], tests[x].T, 16)) {
+ if (XMEMCMP(T[1], tests[x].T, 16)) {
#if 0
printf("\nTag on ciphertext wrong %lu\n", x);
for (y = 0; y < 16; y++) {
@@ -364,5 +409,5 @@ int gcm_test(void)
/* $Source: /cvs/libtom/libtomcrypt/src/encauth/gcm/gcm_test.c,v $ */
-/* $Revision: 1.15 $ */
-/* $Date: 2005/05/05 14:35:58 $ */
+/* $Revision: 1.20 $ */
+/* $Date: 2006/12/03 17:25:44 $ */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-02 20:48:08 +0000