diff libtomcrypt/src/modes/cbc/cbc_encrypt.c @ 1471:6dba84798cd5

Update to libtomcrypt 1.18.1, merged with Dropbear changes
author Matt Johnston <matt@ucc.asn.au>
date Fri, 09 Feb 2018 21:44:05 +0800
parents f849a5ca2efc
children
line wrap: on
line diff
--- a/libtomcrypt/src/modes/cbc/cbc_encrypt.c	Thu Feb 08 23:11:40 2018 +0800
+++ b/libtomcrypt/src/modes/cbc/cbc_encrypt.c	Fri Feb 09 21:44:05 2018 +0800
@@ -5,8 +5,6 @@
  *
  * The library is free for all purposes without any express
  * guarantee it works.
- *
- * Tom St Denis, [email protected], http://libtom.org
  */
 #include "tomcrypt.h"
 
@@ -37,17 +35,17 @@
    if ((err = cipher_is_valid(cbc->cipher)) != CRYPT_OK) {
        return err;
    }
-   
+
    /* is blocklen valid? */
    if (cbc->blocklen < 1 || cbc->blocklen > (int)sizeof(cbc->IV)) {
       return CRYPT_INVALID_ARG;
-   }    
+   }
 
    if (len % cbc->blocklen) {
       return CRYPT_INVALID_ARG;
    }
 #ifdef LTC_FAST
-   if (cbc->blocklen % sizeof(LTC_FAST_TYPE)) {   
+   if (cbc->blocklen % sizeof(LTC_FAST_TYPE)) {
       return CRYPT_INVALID_ARG;
    }
 #endif
@@ -58,13 +56,13 @@
       while (len) {
          /* xor IV against plaintext */
          #if defined(LTC_FAST)
-        for (x = 0; x < cbc->blocklen; x += sizeof(LTC_FAST_TYPE)) {
-            *((LTC_FAST_TYPE*)((unsigned char *)cbc->IV + x)) ^= *((LTC_FAST_TYPE*)((unsigned char *)pt + x));
-        }
-    #else 
-            for (x = 0; x < cbc->blocklen; x++) {
-               cbc->IV[x] ^= pt[x];
-            }
+         for (x = 0; x < cbc->blocklen; x += sizeof(LTC_FAST_TYPE)) {
+            *(LTC_FAST_TYPE_PTR_CAST((unsigned char *)cbc->IV + x)) ^= *(LTC_FAST_TYPE_PTR_CAST((unsigned char *)pt + x));
+         }
+    #else
+         for (x = 0; x < cbc->blocklen; x++) {
+            cbc->IV[x] ^= pt[x];
+         }
     #endif
 
          /* encrypt */
@@ -72,27 +70,27 @@
             return err;
          }
 
-        /* store IV [ciphertext] for a future block */
+         /* store IV [ciphertext] for a future block */
          #if defined(LTC_FAST)
-        for (x = 0; x < cbc->blocklen; x += sizeof(LTC_FAST_TYPE)) {
-            *((LTC_FAST_TYPE*)((unsigned char *)cbc->IV + x)) = *((LTC_FAST_TYPE*)((unsigned char *)ct + x));
-        }
-    #else 
-             for (x = 0; x < cbc->blocklen; x++) {
-                cbc->IV[x] = ct[x];
-             }
+         for (x = 0; x < cbc->blocklen; x += sizeof(LTC_FAST_TYPE)) {
+            *(LTC_FAST_TYPE_PTR_CAST((unsigned char *)cbc->IV + x)) = *(LTC_FAST_TYPE_PTR_CAST((unsigned char *)ct + x));
+         }
+    #else
+         for (x = 0; x < cbc->blocklen; x++) {
+            cbc->IV[x] = ct[x];
+         }
     #endif
-        
-        ct  += cbc->blocklen;
-        pt  += cbc->blocklen;
-        len -= cbc->blocklen;
-     }
+
+         ct  += cbc->blocklen;
+         pt  += cbc->blocklen;
+         len -= cbc->blocklen;
+      }
    }
    return CRYPT_OK;
 }
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */