added libtomcrypt-1.03

src/modes/ctr/ctr_decrypt.c

@@ -36,3 +36,7 @@ int ctr_decrypt(const unsigned char *ct, unsigned char *pt, unsigned long len, s
 
 #endif
 
+
+/* $Source$ */
+/* $Revision$ */
+/* $Date$ */

src/modes/ctr/ctr_done.c

@@ -36,3 +36,7 @@ int ctr_done(symmetric_CTR *ctr)
    
 
 #endif
+
+/* $Source$ */
+/* $Revision$ */
+/* $Date$ */

src/modes/ctr/ctr_encrypt.c

@@ -60,7 +60,7 @@ int ctr_encrypt(const unsigned char *pt, unsigned char *ct, unsigned long len, s
       /* is the pad empty? */
       if (ctr->padlen == ctr->blocklen) {
          /* increment counter */
-         if (ctr->mode == 0) {
+         if (ctr->mode == CTR_COUNTER_LITTLE_ENDIAN) {
             /* little-endian */
             for (x = 0; x < ctr->blocklen; x++) {
                ctr->ctr[x] = (ctr->ctr[x] + (unsigned char)1) & (unsigned char)255;
@@ -102,3 +102,7 @@ int ctr_encrypt(const unsigned char *pt, unsigned char *ct, unsigned long len, s
 }
 
 #endif
+
+/* $Source$ */
+/* $Revision$ */
+/* $Date$ */

src/modes/ctr/ctr_getiv.c

@@ -39,3 +39,7 @@ int ctr_getiv(unsigned char *IV, unsigned long *len, symmetric_CTR *ctr)
 }
 
 #endif
+
+/* $Source$ */
+/* $Revision$ */
+/* $Date$ */

src/modes/ctr/ctr_setiv.c

@@ -52,3 +52,7 @@ int ctr_setiv(const unsigned char *IV, unsigned long len, symmetric_CTR *ctr)
 
 #endif 
 
+
+/* $Source$ */
+/* $Revision$ */
+/* $Date$ */

src/modes/ctr/ctr_start.c

@@ -21,19 +21,23 @@
 /**
    Initialize a CTR context
    @param cipher      The index of the cipher desired
-   @param count       The initial vector
+   @param IV          The initial vector
    @param key         The secret key 
    @param keylen      The length of the secret key (octets)
    @param num_rounds  Number of rounds in the cipher desired (0 for default)
+   @param ctr_mode    The counter mode (CTR_COUNTER_LITTLE_ENDIAN or CTR_COUNTER_BIG_ENDIAN)
    @param ctr         The CTR state to initialize
    @return CRYPT_OK if successful
 */
-int ctr_start(int cipher, const unsigned char *count, const unsigned char *key, int keylen, 
-              int num_rounds, symmetric_CTR *ctr)
+int ctr_start(               int   cipher, 
+              const unsigned char *IV, 
+              const unsigned char *key,       int keylen, 
+                             int  num_rounds, int ctr_mode,
+                   symmetric_CTR *ctr)
 {
    int x, err;
 
-   LTC_ARGCHK(count != NULL);
+   LTC_ARGCHK(IV  != NULL);
    LTC_ARGCHK(key != NULL);
    LTC_ARGCHK(ctr != NULL);
 
@@ -51,12 +55,16 @@ int ctr_start(int cipher, const unsigned char *count, const unsigned char *key,
    ctr->blocklen = cipher_descriptor[cipher].block_length;
    ctr->cipher   = cipher;
    ctr->padlen   = 0;
-   ctr->mode     = 0;
+   ctr->mode     = ctr_mode;
    for (x = 0; x < ctr->blocklen; x++) {
-       ctr->ctr[x] = count[x];
+       ctr->ctr[x] = IV[x];
    }
    cipher_descriptor[ctr->cipher].ecb_encrypt(ctr->ctr, ctr->pad, &ctr->key);
    return CRYPT_OK;
 }
 
 #endif
+
+/* $Source$ */
+/* $Revision$ */
+/* $Date$ */