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-rw-r--r--libtomcrypt/src/encauth/gcm/gcm_add_aad.c124
-rw-r--r--libtomcrypt/src/encauth/gcm/gcm_add_iv.c94
-rw-r--r--libtomcrypt/src/encauth/gcm/gcm_done.c81
-rw-r--r--libtomcrypt/src/encauth/gcm/gcm_gf_mult.c94
-rw-r--r--libtomcrypt/src/encauth/gcm/gcm_init.c145
-rw-r--r--libtomcrypt/src/encauth/gcm/gcm_memory.c93
-rw-r--r--libtomcrypt/src/encauth/gcm/gcm_process.c147
-rw-r--r--libtomcrypt/src/encauth/gcm/gcm_reset.c44
-rw-r--r--libtomcrypt/src/encauth/gcm/gcm_test.c368
9 files changed, 1190 insertions, 0 deletions
diff --git a/libtomcrypt/src/encauth/gcm/gcm_add_aad.c b/libtomcrypt/src/encauth/gcm/gcm_add_aad.c
new file mode 100644
index 0000000..03cb279
--- /dev/null
+++ b/libtomcrypt/src/encauth/gcm/gcm_add_aad.c
@@ -0,0 +1,124 @@
+/* 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.org
+ */
+
+/**
+ @file gcm_add_aad.c
+ GCM implementation, Add AAD data to the stream, by Tom St Denis
+*/
+#include "tomcrypt.h"
+
+#ifdef GCM_MODE
+
+/**
+ Add AAD to the GCM state
+ @param gcm The GCM state
+ @param adata The additional authentication data to add to the GCM state
+ @param adatalen The length of the AAD data.
+ @return CRYPT_OK on success
+ */
+int gcm_add_aad(gcm_state *gcm,
+ const unsigned char *adata, unsigned long adatalen)
+{
+ unsigned long x;
+ int err;
+#ifdef LTC_FAST
+ unsigned long y;
+#endif
+
+ LTC_ARGCHK(gcm != NULL);
+ if (adatalen > 0) {
+ LTC_ARGCHK(adata != NULL);
+ }
+
+ if (gcm->buflen > 16 || gcm->buflen < 0) {
+ return CRYPT_INVALID_ARG;
+ }
+
+ if ((err = cipher_is_valid(gcm->cipher)) != CRYPT_OK) {
+ return err;
+ }
+
+ /* in IV mode? */
+ if (gcm->mode == GCM_MODE_IV) {
+ /* let's process the IV */
+ if (gcm->ivmode || gcm->buflen != 12) {
+ for (x = 0; x < (unsigned long)gcm->buflen; x++) {
+ gcm->X[x] ^= gcm->buf[x];
+ }
+ if (gcm->buflen) {
+ 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);
+ for (x = 0; x < 16; x++) {
+ gcm->X[x] ^= gcm->buf[x];
+ }
+ gcm_mult_h(gcm, gcm->X);
+
+ /* copy counter out */
+ XMEMCPY(gcm->Y, gcm->X, 16);
+ zeromem(gcm->X, 16);
+ } else {
+ XMEMCPY(gcm->Y, gcm->buf, 12);
+ gcm->Y[12] = 0;
+ gcm->Y[13] = 0;
+ gcm->Y[14] = 0;
+ gcm->Y[15] = 1;
+ }
+ XMEMCPY(gcm->Y_0, gcm->Y, 16);
+ zeromem(gcm->buf, 16);
+ gcm->buflen = 0;
+ gcm->totlen = 0;
+ gcm->mode = GCM_MODE_AAD;
+ }
+
+ if (gcm->mode != GCM_MODE_AAD || gcm->buflen >= 16) {
+ return CRYPT_INVALID_ARG;
+ }
+
+ x = 0;
+#ifdef LTC_FAST
+ if (gcm->buflen == 0) {
+ for (x = 0; x < (adatalen & ~15); x += 16) {
+ for (y = 0; y < 16; y += sizeof(LTC_FAST_TYPE)) {
+ *((LTC_FAST_TYPE*)(&gcm->X[y])) ^= *((LTC_FAST_TYPE*)(&adata[x + y]));
+ }
+ gcm_mult_h(gcm, gcm->X);
+ gcm->totlen += 128;
+ }
+ adata += x;
+ }
+#endif
+
+
+ /* start adding AAD data to the state */
+ for (; x < adatalen; x++) {
+ gcm->X[gcm->buflen++] ^= *adata++;
+
+ if (gcm->buflen == 16) {
+ /* GF mult it */
+ gcm_mult_h(gcm, gcm->X);
+ gcm->buflen = 0;
+ gcm->totlen += 128;
+ }
+ }
+
+ return CRYPT_OK;
+}
+#endif
+
+
+/* $Source: /cvs/libtom/libtomcrypt/src/encauth/gcm/gcm_add_aad.c,v $ */
+/* $Revision: 1.14 $ */
+/* $Date: 2005/05/05 14:35:58 $ */
diff --git a/libtomcrypt/src/encauth/gcm/gcm_add_iv.c b/libtomcrypt/src/encauth/gcm/gcm_add_iv.c
new file mode 100644
index 0000000..107cf35
--- /dev/null
+++ b/libtomcrypt/src/encauth/gcm/gcm_add_iv.c
@@ -0,0 +1,94 @@
+/* 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.org
+ */
+
+/**
+ @file gcm_add_iv.c
+ GCM implementation, add IV data to the state, by Tom St Denis
+*/
+#include "tomcrypt.h"
+
+#ifdef GCM_MODE
+
+/**
+ Add IV data to the GCM state
+ @param gcm The GCM state
+ @param IV The initial value data to add
+ @param IVlen The length of the IV
+ @return CRYPT_OK on success
+ */
+int gcm_add_iv(gcm_state *gcm,
+ const unsigned char *IV, unsigned long IVlen)
+{
+ unsigned long x, y;
+ int err;
+
+ LTC_ARGCHK(gcm != NULL);
+ if (IVlen > 0) {
+ LTC_ARGCHK(IV != NULL);
+ }
+
+ /* must be in IV mode */
+ if (gcm->mode != GCM_MODE_IV) {
+ return CRYPT_INVALID_ARG;
+ }
+
+ if (gcm->buflen >= 16 || gcm->buflen < 0) {
+ return CRYPT_INVALID_ARG;
+ }
+
+ if ((err = cipher_is_valid(gcm->cipher)) != CRYPT_OK) {
+ return err;
+ }
+
+
+ /* trip the ivmode flag */
+ if (IVlen + gcm->buflen > 12) {
+ gcm->ivmode |= 1;
+ }
+
+ x = 0;
+#ifdef LTC_FAST
+ if (gcm->buflen == 0) {
+ for (x = 0; x < (IVlen & ~15); x += 16) {
+ for (y = 0; y < 16; y += sizeof(LTC_FAST_TYPE)) {
+ *((LTC_FAST_TYPE*)(&gcm->X[y])) ^= *((LTC_FAST_TYPE*)(&IV[x + y]));
+ }
+ gcm_mult_h(gcm, gcm->X);
+ gcm->totlen += 128;
+ }
+ IV += x;
+ }
+#endif
+
+ /* start adding IV data to the state */
+ for (; x < IVlen; x++) {
+ gcm->buf[gcm->buflen++] = *IV++;
+
+ if (gcm->buflen == 16) {
+ /* GF mult it */
+ for (y = 0; y < 16; y++) {
+ gcm->X[y] ^= gcm->buf[y];
+ }
+ gcm_mult_h(gcm, gcm->X);
+ gcm->buflen = 0;
+ gcm->totlen += 128;
+ }
+ }
+
+ return CRYPT_OK;
+}
+
+#endif
+
+
+/* $Source: /cvs/libtom/libtomcrypt/src/encauth/gcm/gcm_add_iv.c,v $ */
+/* $Revision: 1.6 $ */
+/* $Date: 2005/05/05 14:35:58 $ */
diff --git a/libtomcrypt/src/encauth/gcm/gcm_done.c b/libtomcrypt/src/encauth/gcm/gcm_done.c
new file mode 100644
index 0000000..96ef7f3
--- /dev/null
+++ b/libtomcrypt/src/encauth/gcm/gcm_done.c
@@ -0,0 +1,81 @@
+/* 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.org
+ */
+
+/**
+ @file gcm_done.c
+ GCM implementation, Terminate the stream, by Tom St Denis
+*/
+#include "tomcrypt.h"
+
+#ifdef GCM_MODE
+
+/**
+ Terminate a GCM stream
+ @param gcm The GCM state
+ @param tag [out] The destination for the MAC tag
+ @param taglen [in/out] The length of the MAC tag
+ @return CRYPT_OK on success
+ */
+int gcm_done(gcm_state *gcm,
+ unsigned char *tag, unsigned long *taglen)
+{
+ unsigned long x;
+ int err;
+
+ LTC_ARGCHK(gcm != NULL);
+ LTC_ARGCHK(tag != NULL);
+ LTC_ARGCHK(taglen != NULL);
+
+ if (gcm->buflen > 16 || gcm->buflen < 0) {
+ return CRYPT_INVALID_ARG;
+ }
+
+ if ((err = cipher_is_valid(gcm->cipher)) != CRYPT_OK) {
+ return err;
+ }
+
+
+ if (gcm->mode != GCM_MODE_TEXT) {
+ return CRYPT_INVALID_ARG;
+ }
+
+ /* handle remaining ciphertext */
+ if (gcm->buflen) {
+ gcm->pttotlen += gcm->buflen * CONST64(8);
+ gcm_mult_h(gcm, gcm->X);
+ }
+
+ /* length */
+ STORE64H(gcm->totlen, gcm->buf);
+ STORE64H(gcm->pttotlen, gcm->buf+8);
+ for (x = 0; x < 16; x++) {
+ gcm->X[x] ^= gcm->buf[x];
+ }
+ gcm_mult_h(gcm, gcm->X);
+
+ /* encrypt original counter */
+ cipher_descriptor[gcm->cipher].ecb_encrypt(gcm->Y_0, gcm->buf, &gcm->K);
+ for (x = 0; x < 16 && x < *taglen; x++) {
+ tag[x] = gcm->buf[x] ^ gcm->X[x];
+ }
+ *taglen = x;
+
+ cipher_descriptor[gcm->cipher].done(&gcm->K);
+
+ return CRYPT_OK;
+}
+
+#endif
+
+
+/* $Source: /cvs/libtom/libtomcrypt/src/encauth/gcm/gcm_done.c,v $ */
+/* $Revision: 1.7 $ */
+/* $Date: 2005/05/05 14:35:58 $ */
diff --git a/libtomcrypt/src/encauth/gcm/gcm_gf_mult.c b/libtomcrypt/src/encauth/gcm/gcm_gf_mult.c
new file mode 100644
index 0000000..06db22b
--- /dev/null
+++ b/libtomcrypt/src/encauth/gcm/gcm_gf_mult.c
@@ -0,0 +1,94 @@
+/* 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.org
+ */
+
+/**
+ @file gcm_gf_mult.c
+ GCM implementation, initialize state, by Tom St Denis
+*/
+#include "tomcrypt.h"
+
+#ifdef GCM_MODE
+
+/* right shift */
+static void gcm_rightshift(unsigned char *a)
+{
+ int x;
+ for (x = 15; x > 0; x--) {
+ a[x] = (a[x]>>1) | ((a[x-1]<<7)&0x80);
+ }
+ a[0] >>= 1;
+}
+
+/* c = b*a */
+static const unsigned char mask[] = { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 };
+static const unsigned char poly[] = { 0x00, 0xE1 };
+
+
+/**
+ GCM GF multiplier (internal use only)
+ @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 Z[16], V[16];
+ unsigned x, y, z;
+
+ zeromem(Z, 16);
+ XMEMCPY(V, a, 16);
+ for (x = 0; x < 128; x++) {
+ if (b[x>>3] & mask[x&7]) {
+ for (y = 0; y < 16; y++) {
+ Z[y] ^= V[y];
+ }
+ }
+ z = V[15] & 0x01;
+ gcm_rightshift(V);
+ V[0] ^= poly[z];
+ }
+ XMEMCPY(c, Z, 16);
+}
+
+/**
+ 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;
+ 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
+ }
+#else
+ gcm_gf_mult(gcm->H, I, T);
+#endif
+ XMEMCPY(I, T, 16);
+}
+
+
+#endif
+
+/* $Source: /cvs/libtom/libtomcrypt/src/encauth/gcm/gcm_gf_mult.c,v $ */
+/* $Revision: 1.16 $ */
+/* $Date: 2005/05/21 14:33:42 $ */
diff --git a/libtomcrypt/src/encauth/gcm/gcm_init.c b/libtomcrypt/src/encauth/gcm/gcm_init.c
new file mode 100644
index 0000000..249b61d
--- /dev/null
+++ b/libtomcrypt/src/encauth/gcm/gcm_init.c
@@ -0,0 +1,145 @@
+/* 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.org
+ */
+
+/**
+ @file gcm_init.c
+ GCM implementation, initialize state, by Tom St Denis
+*/
+#include "tomcrypt.h"
+
+#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
+ @param cipher The index of the cipher to use
+ @param key The secret key
+ @param keylen The length of the secret key
+ @return CRYPT_OK on success
+ */
+int gcm_init(gcm_state *gcm, int cipher,
+ const unsigned char *key, int keylen)
+{
+ int err;
+ unsigned char B[16];
+#ifdef GCM_TABLES
+ int x, y, z, t;
+#endif
+
+ LTC_ARGCHK(gcm != NULL);
+ LTC_ARGCHK(key != NULL);
+
+#ifdef LTC_FAST
+ if (16 % sizeof(LTC_FAST_TYPE)) {
+ return CRYPT_INVALID_ARG;
+ }
+#endif
+
+ /* is cipher valid? */
+ if ((err = cipher_is_valid(cipher)) != CRYPT_OK) {
+ return err;
+ }
+ if (cipher_descriptor[cipher].block_length != 16) {
+ return CRYPT_INVALID_CIPHER;
+ }
+
+ /* schedule key */
+ if ((err = cipher_descriptor[cipher].setup(key, keylen, 0, &gcm->K)) != CRYPT_OK) {
+ return err;
+ }
+
+ /* H = E(0) */
+ zeromem(B, 16);
+ cipher_descriptor[cipher].ecb_encrypt(B, gcm->H, &gcm->K);
+
+ /* setup state */
+ zeromem(gcm->buf, sizeof(gcm->buf));
+ zeromem(gcm->X, sizeof(gcm->X));
+ gcm->cipher = cipher;
+ gcm->mode = GCM_MODE_IV;
+ gcm->ivmode = 0;
+ gcm->buflen = 0;
+ gcm->totlen = 0;
+ gcm->pttotlen = 0;
+
+#ifdef GCM_TABLES
+ /* setup tables */
+
+ /* generate the first table as it has no shifting (from which we make the other tables) */
+ zeromem(B, 16);
+ for (y = 0; y < 256; y++) {
+ B[0] = y;
+ gcm_gf_mult(gcm->H, B, &gcm->PC[0][y][0]);
+ }
+
+ /* now generate the rest of the tables based the previous table */
+ for (x = 1; x < 16; x++) {
+ for (y = 0; y < 256; y++) {
+ /* now shift it right by 8 bits */
+ t = gcm->PC[x-1][y][15];
+ for (z = 15; z > 0; z--) {
+ gcm->PC[x][y][z] = gcm->PC[x-1][y][z-1];
+ }
+ gcm->PC[x][y][0] = gcm_shift_table[t<<1];
+ gcm->PC[x][y][1] ^= gcm_shift_table[(t<<1)+1];
+ }
+ }
+
+#endif
+
+ return CRYPT_OK;
+}
+
+#endif
+
+/* $Source: /cvs/libtom/libtomcrypt/src/encauth/gcm/gcm_init.c,v $ */
+/* $Revision: 1.15 $ */
+/* $Date: 2005/05/21 15:05:19 $ */
diff --git a/libtomcrypt/src/encauth/gcm/gcm_memory.c b/libtomcrypt/src/encauth/gcm/gcm_memory.c
new file mode 100644
index 0000000..ee10d3f
--- /dev/null
+++ b/libtomcrypt/src/encauth/gcm/gcm_memory.c
@@ -0,0 +1,93 @@
+/* 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.org
+ */
+
+/**
+ @file gcm_memory.c
+ GCM implementation, process a packet, by Tom St Denis
+*/
+#include "tomcrypt.h"
+
+#ifdef GCM_MODE
+
+/**
+ Process an entire GCM packet in one call.
+ @param cipher Index of cipher to use
+ @param key The secret key
+ @param keylen The length of the secret key
+ @param IV The initial vector
+ @param IVlen The length of the initial vector
+ @param adata The additional authentication data (header)
+ @param adatalen The length of the adata
+ @param pt The plaintext
+ @param ptlen The length of the plaintext (ciphertext length is the same)
+ @param ct The ciphertext
+ @param tag [out] The MAC tag
+ @param taglen [in/out] The MAC tag length
+ @param direction Encrypt or Decrypt mode (GCM_ENCRYPT or GCM_DECRYPT)
+ @return CRYPT_OK on success
+ */
+int gcm_memory( int cipher,
+ const unsigned char *key, unsigned long keylen,
+ const unsigned char *IV, unsigned long IVlen,
+ const unsigned char *adata, unsigned long adatalen,
+ unsigned char *pt, unsigned long ptlen,
+ unsigned char *ct,
+ unsigned char *tag, unsigned long *taglen,
+ int direction)
+{
+ gcm_state *gcm;
+ int err;
+
+ if ((err = cipher_is_valid(cipher)) != CRYPT_OK) {
+ return err;
+ }
+
+ if (cipher_descriptor[cipher].accel_gcm_memory != NULL) {
+ cipher_descriptor[cipher].accel_gcm_memory
+ (key, keylen,
+ IV, IVlen,
+ adata, adatalen,
+ pt, ptlen,
+ ct,
+ tag, taglen,
+ direction);
+ return CRYPT_OK;
+ }
+
+
+ gcm = XMALLOC(sizeof(*gcm));
+ if (gcm == NULL) {
+ return CRYPT_MEM;
+ }
+
+ if ((err = gcm_init(gcm, cipher, key, keylen)) != CRYPT_OK) {
+ goto LTC_ERR;
+ }
+ if ((err = gcm_add_iv(gcm, IV, IVlen)) != CRYPT_OK) {
+ goto LTC_ERR;
+ }
+ if ((err = gcm_add_aad(gcm, adata, adatalen)) != CRYPT_OK) {
+ goto LTC_ERR;
+ }
+ if ((err = gcm_process(gcm, pt, ptlen, ct, direction)) != CRYPT_OK) {
+ goto LTC_ERR;
+ }
+ err = gcm_done(gcm, tag, taglen);
+LTC_ERR:
+ XFREE(gcm);
+ return err;
+}
+#endif
+
+
+/* $Source: /cvs/libtom/libtomcrypt/src/encauth/gcm/gcm_memory.c,v $ */
+/* $Revision: 1.19 $ */
+/* $Date: 2005/05/05 14:35:58 $ */
diff --git a/libtomcrypt/src/encauth/gcm/gcm_process.c b/libtomcrypt/src/encauth/gcm/gcm_process.c
new file mode 100644
index 0000000..f512e28
--- /dev/null
+++ b/libtomcrypt/src/encauth/gcm/gcm_process.c
@@ -0,0 +1,147 @@
+/* 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.org
+ */
+
+/**
+ @file gcm_process.c
+ GCM implementation, process message data, by Tom St Denis
+*/
+#include "tomcrypt.h"
+
+#ifdef GCM_MODE
+
+/**
+ Process plaintext/ciphertext through GCM
+ @param gcm The GCM state
+ @param pt The plaintext
+ @param ptlen The plaintext length (ciphertext length is the same)
+ @param ct The ciphertext
+ @param direction Encrypt or Decrypt mode (GCM_ENCRYPT or GCM_DECRYPT)
+ @return CRYPT_OK on success
+ */
+int gcm_process(gcm_state *gcm,
+ unsigned char *pt, unsigned long ptlen,
+ unsigned char *ct,
+ int direction)
+{
+ unsigned long x, y;
+ unsigned char b;
+ int err;
+
+ LTC_ARGCHK(gcm != NULL);
+ if (ptlen > 0) {
+ LTC_ARGCHK(pt != NULL);
+ LTC_ARGCHK(ct != NULL);
+ }
+
+ if (gcm->buflen > 16 || gcm->buflen < 0) {
+ return CRYPT_INVALID_ARG;
+ }
+
+ if ((err = cipher_is_valid(gcm->cipher)) != CRYPT_OK) {
+ return err;
+ }
+
+ /* in AAD mode? */
+ if (gcm->mode == GCM_MODE_AAD) {
+ /* let's process the AAD */
+ if (gcm->buflen) {
+ gcm->totlen += gcm->buflen * CONST64(8);
+ gcm_mult_h(gcm, gcm->X);
+ }
+
+ /* increment counter */
+ for (y = 15; y >= 12; y--) {
+ if (++gcm->Y[y]) { break; }
+ }
+ /* encrypt the counter */
+ cipher_descriptor[gcm->cipher].ecb_encrypt(gcm->Y, gcm->buf, &gcm->K);
+
+ gcm->buflen = 0;
+ gcm->mode = GCM_MODE_TEXT;
+ }
+
+ if (gcm->mode != GCM_MODE_TEXT) {
+ return CRYPT_INVALID_ARG;
+ }
+
+ x = 0;
+#ifdef LTC_FAST
+ if (gcm->buflen == 0) {
+ if (direction == GCM_ENCRYPT) {
+ for (x = 0; x < (ptlen & ~15); x += 16) {
+ /* ctr encrypt */
+ for (y = 0; y < 16; y += sizeof(LTC_FAST_TYPE)) {
+ *((LTC_FAST_TYPE*)(&ct[x + y])) = *((LTC_FAST_TYPE*)(&pt[x+y])) ^ *((LTC_FAST_TYPE*)(&gcm->buf[y]));
+ *((LTC_FAST_TYPE*)(&gcm->X[y])) ^= *((LTC_FAST_TYPE*)(&ct[x+y]));
+ }
+ /* GMAC it */
+ gcm->pttotlen += 128;
+ gcm_mult_h(gcm, gcm->X);
+ /* increment counter */
+ for (y = 15; y >= 12; y--) {
+ if (++gcm->Y[y]) { break; }
+ }
+ cipher_descriptor[gcm->cipher].ecb_encrypt(gcm->Y, gcm->buf, &gcm->K);
+ }
+ } else {
+ for (x = 0; x < (ptlen & ~15); x += 16) {
+ /* ctr encrypt */
+ for (y = 0; y < 16; y += sizeof(LTC_FAST_TYPE)) {
+ *((LTC_FAST_TYPE*)(&gcm->X[y])) ^= *((LTC_FAST_TYPE*)(&ct[x+y]));
+ *((LTC_FAST_TYPE*)(&pt[x + y])) = *((LTC_FAST_TYPE*)(&ct[x+y])) ^ *((LTC_FAST_TYPE*)(&gcm->buf[y]));
+ }
+ /* GMAC it */
+ gcm->pttotlen += 128;
+ gcm_mult_h(gcm, gcm->X);
+ /* increment counter */
+ for (y = 15; y >= 12; y--) {
+ if (++gcm->Y[y]) { break; }
+ }
+ cipher_descriptor[gcm->cipher].ecb_encrypt(gcm->Y, gcm->buf, &gcm->K);
+ }
+ }
+ }
+#endif
+
+ /* process text */
+ for (; x < ptlen; x++) {
+ if (gcm->buflen == 16) {
+ gcm->pttotlen += 128;
+ gcm_mult_h(gcm, gcm->X);
+
+ /* increment counter */
+ for (y = 15; y >= 12; y--) {
+ if (++gcm->Y[y]) { break; }
+ }
+ cipher_descriptor[gcm->cipher].ecb_encrypt(gcm->Y, gcm->buf, &gcm->K);
+ gcm->buflen = 0;
+ }
+
+ if (direction == GCM_ENCRYPT) {
+ b = ct[x] = pt[x] ^ gcm->buf[gcm->buflen];
+ } else {
+ b = ct[x];
+ pt[x] = ct[x] ^ gcm->buf[gcm->buflen];
+ }
+ gcm->X[gcm->buflen++] ^= b;
+ }
+
+ 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 $ */
diff --git a/libtomcrypt/src/encauth/gcm/gcm_reset.c b/libtomcrypt/src/encauth/gcm/gcm_reset.c
new file mode 100644
index 0000000..b336a92
--- /dev/null
+++ b/libtomcrypt/src/encauth/gcm/gcm_reset.c
@@ -0,0 +1,44 @@
+/* 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.org
+ */
+
+/**
+ @file gcm_reset.c
+ GCM implementation, reset a used state so it can accept IV data, by Tom St Denis
+*/
+#include "tomcrypt.h"
+
+#ifdef GCM_MODE
+
+/**
+ Reset a GCM state to as if you just called gcm_init(). This saves the initialization time.
+ @param gcm The GCM state to reset
+ @return CRYPT_OK on success
+*/
+int gcm_reset(gcm_state *gcm)
+{
+ LTC_ARGCHK(gcm != NULL);
+
+ zeromem(gcm->buf, sizeof(gcm->buf));
+ zeromem(gcm->X, sizeof(gcm->X));
+ gcm->mode = GCM_MODE_IV;
+ gcm->ivmode = 0;
+ gcm->buflen = 0;
+ gcm->totlen = 0;
+ gcm->pttotlen = 0;
+
+ return CRYPT_OK;
+}
+
+#endif
+
+/* $Source: /cvs/libtom/libtomcrypt/src/encauth/gcm/gcm_reset.c,v $ */
+/* $Revision: 1.3 $ */
+/* $Date: 2005/05/05 14:35:58 $ */
diff --git a/libtomcrypt/src/encauth/gcm/gcm_test.c b/libtomcrypt/src/encauth/gcm/gcm_test.c
new file mode 100644
index 0000000..7106188
--- /dev/null
+++ b/libtomcrypt/src/encauth/gcm/gcm_test.c
@@ -0,0 +1,368 @@
+/* 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.org
+ */
+
+/**
+ @file gcm_test.c
+ GCM implementation, testing, by Tom St Denis
+*/
+#include "tomcrypt.h"
+
+#ifdef GCM_MODE
+
+/**
+ Test the GCM code
+ @return CRYPT_OK on success
+ */
+int gcm_test(void)
+{
+#ifndef LTC_TEST
+ return CRYPT_NOP;
+#else
+ static const struct {
+ unsigned char K[32];
+ int keylen;
+ unsigned char P[64];
+ unsigned long ptlen;
+ unsigned char A[64];
+ unsigned long alen;
+ unsigned char IV[64];
+ unsigned long IVlen;
+ unsigned char C[64];
+ unsigned char T[16];
+ } tests[] = {
+
+/* test case #1 */
+{
+ /* key */
+ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+ 16,
+
+ /* plaintext */
+ { 0 },
+ 0,
+
+ /* AAD data */
+ { 0 },
+ 0,
+
+ /* IV */
+ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00 },
+ 12,
+
+ /* ciphertext */
+ { 0 },
+
+ /* tag */
+ { 0x58, 0xe2, 0xfc, 0xce, 0xfa, 0x7e, 0x30, 0x61,
+ 0x36, 0x7f, 0x1d, 0x57, 0xa4, 0xe7, 0x45, 0x5a }
+},
+
+/* test case #2 */
+{
+ /* key */
+ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+ 16,
+
+ /* PT */
+ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+ 16,
+
+ /* ADATA */
+ { 0 },
+ 0,
+
+ /* IV */
+ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00 },
+ 12,
+
+ /* CT */
+ { 0x03, 0x88, 0xda, 0xce, 0x60, 0xb6, 0xa3, 0x92,
+ 0xf3, 0x28, 0xc2, 0xb9, 0x71, 0xb2, 0xfe, 0x78 },
+
+ /* TAG */
+ { 0xab, 0x6e, 0x47, 0xd4, 0x2c, 0xec, 0x13, 0xbd,
+ 0xf5, 0x3a, 0x67, 0xb2, 0x12, 0x57, 0xbd, 0xdf }
+},
+
+/* test case #3 */
+{
+ /* key */
+ { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
+ 0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08, },
+ 16,
+
+ /* PT */
+ { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
+ 0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
+ 0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
+ 0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
+ 0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
+ 0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
+ 0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
+ 0xba, 0x63, 0x7b, 0x39, 0x1a, 0xaf, 0xd2, 0x55, },
+ 64,
+
+ /* ADATA */
+ { 0 },
+ 0,
+
+ /* IV */
+ { 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
+ 0xde, 0xca, 0xf8, 0x88, },
+ 12,
+
+ /* CT */
+ { 0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,
+ 0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,
+ 0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,
+ 0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,
+ 0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,
+ 0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,
+ 0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,
+ 0x3d, 0x58, 0xe0, 0x91, 0x47, 0x3f, 0x59, 0x85, },
+
+ /* TAG */
+ { 0x4d, 0x5c, 0x2a, 0xf3, 0x27, 0xcd, 0x64, 0xa6,
+ 0x2c, 0xf3, 0x5a, 0xbd, 0x2b, 0xa6, 0xfa, 0xb4, }
+},
+
+/* test case #4 */
+{
+ /* key */
+ { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
+ 0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08, },
+ 16,
+
+ /* PT */
+ { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
+ 0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
+ 0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
+ 0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
+ 0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
+ 0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
+ 0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
+ 0xba, 0x63, 0x7b, 0x39, },
+ 60,
+
+ /* ADATA */
+ { 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
+ 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
+ 0xab, 0xad, 0xda, 0xd2, },
+ 20,
+
+ /* IV */
+ { 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
+ 0xde, 0xca, 0xf8, 0x88, },
+ 12,
+
+ /* CT */
+ { 0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,
+ 0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,
+ 0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,
+ 0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,
+ 0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,
+ 0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,
+ 0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,
+ 0x3d, 0x58, 0xe0, 0x91, },
+
+ /* TAG */
+ { 0x5b, 0xc9, 0x4f, 0xbc, 0x32, 0x21, 0xa5, 0xdb,
+ 0x94, 0xfa, 0xe9, 0x5a, 0xe7, 0x12, 0x1a, 0x47, }
+
+},
+
+/* test case #5 */
+{
+ /* key */
+ { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
+ 0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08, },
+ 16,
+
+ /* PT */
+ { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
+ 0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
+ 0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
+ 0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
+ 0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
+ 0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
+ 0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
+ 0xba, 0x63, 0x7b, 0x39, },
+ 60,
+
+ /* ADATA */
+ { 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
+ 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
+ 0xab, 0xad, 0xda, 0xd2, },
+ 20,
+
+ /* IV */
+ { 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad, },
+ 8,
+
+ /* CT */
+ { 0x61, 0x35, 0x3b, 0x4c, 0x28, 0x06, 0x93, 0x4a,
+ 0x77, 0x7f, 0xf5, 0x1f, 0xa2, 0x2a, 0x47, 0x55,
+ 0x69, 0x9b, 0x2a, 0x71, 0x4f, 0xcd, 0xc6, 0xf8,
+ 0x37, 0x66, 0xe5, 0xf9, 0x7b, 0x6c, 0x74, 0x23,
+ 0x73, 0x80, 0x69, 0x00, 0xe4, 0x9f, 0x24, 0xb2,
+ 0x2b, 0x09, 0x75, 0x44, 0xd4, 0x89, 0x6b, 0x42,
+ 0x49, 0x89, 0xb5, 0xe1, 0xeb, 0xac, 0x0f, 0x07,
+ 0xc2, 0x3f, 0x45, 0x98, },
+
+ /* TAG */
+ { 0x36, 0x12, 0xd2, 0xe7, 0x9e, 0x3b, 0x07, 0x85,
+ 0x56, 0x1b, 0xe1, 0x4a, 0xac, 0xa2, 0xfc, 0xcb, }
+},
+
+/* test case #6 */
+{
+ /* key */
+ { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
+ 0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08, },
+ 16,
+
+ /* PT */
+ { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
+ 0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
+ 0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
+ 0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
+ 0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
+ 0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
+ 0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
+ 0xba, 0x63, 0x7b, 0x39, },
+ 60,
+
+ /* ADATA */
+ { 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
+ 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
+ 0xab, 0xad, 0xda, 0xd2, },
+ 20,
+
+ /* IV */
+ { 0x93, 0x13, 0x22, 0x5d, 0xf8, 0x84, 0x06, 0xe5,
+ 0x55, 0x90, 0x9c, 0x5a, 0xff, 0x52, 0x69, 0xaa,
+ 0x6a, 0x7a, 0x95, 0x38, 0x53, 0x4f, 0x7d, 0xa1,
+ 0xe4, 0xc3, 0x03, 0xd2, 0xa3, 0x18, 0xa7, 0x28,
+ 0xc3, 0xc0, 0xc9, 0x51, 0x56, 0x80, 0x95, 0x39,
+ 0xfc, 0xf0, 0xe2, 0x42, 0x9a, 0x6b, 0x52, 0x54,
+ 0x16, 0xae, 0xdb, 0xf5, 0xa0, 0xde, 0x6a, 0x57,
+ 0xa6, 0x37, 0xb3, 0x9b, },
+ 60,
+
+ /* CT */
+ { 0x8c, 0xe2, 0x49, 0x98, 0x62, 0x56, 0x15, 0xb6,
+ 0x03, 0xa0, 0x33, 0xac, 0xa1, 0x3f, 0xb8, 0x94,
+ 0xbe, 0x91, 0x12, 0xa5, 0xc3, 0xa2, 0x11, 0xa8,
+ 0xba, 0x26, 0x2a, 0x3c, 0xca, 0x7e, 0x2c, 0xa7,
+ 0x01, 0xe4, 0xa9, 0xa4, 0xfb, 0xa4, 0x3c, 0x90,
+ 0xcc, 0xdc, 0xb2, 0x81, 0xd4, 0x8c, 0x7c, 0x6f,
+ 0xd6, 0x28, 0x75, 0xd2, 0xac, 0xa4, 0x17, 0x03,
+ 0x4c, 0x34, 0xae, 0xe5, },
+
+ /* TAG */
+ { 0x61, 0x9c, 0xc5, 0xae, 0xff, 0xfe, 0x0b, 0xfa,
+ 0x46, 0x2a, 0xf4, 0x3c, 0x16, 0x99, 0xd0, 0x50, }
+}
+
+/* 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];
+
+ /* find aes */
+ idx = find_cipher("aes");
+ if (idx == -1) {
+ idx = find_cipher("rijndael");
+ if (idx == -1) {
+ return CRYPT_NOP;
+ }
+ }
+
+ for (x = 0; x < (int)(sizeof(tests)/sizeof(tests[0])); x++) {
+ y = sizeof(T[0]);
+ if ((err = gcm_memory(idx, tests[x].K, tests[x].keylen,
+ tests[x].IV, tests[x].IVlen,
+ tests[x].A, tests[x].alen,
+ (unsigned char*)tests[x].P, tests[x].ptlen,
+ out[0], T[0], &y, GCM_ENCRYPT)) != CRYPT_OK) {
+ return err;
+ }
+
+ if (memcmp(out[0], tests[x].C, tests[x].ptlen)) {
+#if 0
+ printf("\nCiphertext wrong %lu\n", x);
+ for (y = 0; y < tests[x].ptlen; y++) {
+ printf("%02x", out[0][y] & 255);
+ }
+ printf("\n");
+#endif
+ return CRYPT_FAIL_TESTVECTOR;
+ }
+
+ if (memcmp(T[0], tests[x].T, 16)) {
+#if 0
+ printf("\nTag on plaintext wrong %lu\n", x);
+ for (y = 0; y < 16; y++) {
+ printf("%02x", T[0][y] & 255);
+ }
+ printf("\n");
+#endif
+ return CRYPT_FAIL_TESTVECTOR;
+ }
+
+ y = sizeof(T[1]);
+ if ((err = gcm_memory(idx, tests[x].K, tests[x].keylen,
+ tests[x].IV, tests[x].IVlen,
+ tests[x].A, tests[x].alen,
+ out[1], tests[x].ptlen,
+ out[0], T[1], &y, GCM_DECRYPT)) != CRYPT_OK) {
+ return err;
+ }
+
+ if (memcmp(out[1], tests[x].P, tests[x].ptlen)) {
+#if 0
+ printf("\nplaintext wrong %lu\n", x);
+ for (y = 0; y < tests[x].ptlen; y++) {
+ printf("%02x", out[0][y] & 255);
+ }
+ printf("\n");
+#endif
+ return CRYPT_FAIL_TESTVECTOR;
+ }
+
+ if (memcmp(T[1], tests[x].T, 16)) {
+#if 0
+ printf("\nTag on ciphertext wrong %lu\n", x);
+ for (y = 0; y < 16; y++) {
+ printf("%02x", T[1][y] & 255);
+ }
+ printf("\n");
+#endif
+ return CRYPT_FAIL_TESTVECTOR;
+ }
+
+ }
+ return CRYPT_OK;
+#endif
+}
+
+#endif
+
+
+/* $Source: /cvs/libtom/libtomcrypt/src/encauth/gcm/gcm_test.c,v $ */
+/* $Revision: 1.15 $ */
+/* $Date: 2005/05/05 14:35:58 $ */
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