diff libtomcrypt/src/modes/cbc/cbc_getiv.c @ 330:5488db2e9e4e

merge of 332f709a4cb39cde4cedab7c3be89e05f3023067 and ca4ca78b82c5d430c69ce01bf794e8886ce81431
author Matt Johnston <matt@ucc.asn.au>
date Sat, 10 Jun 2006 16:39:40 +0000
parents 1b9e69c058d2
children 0cbe8f6dbf9e
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libtomcrypt/src/modes/cbc/cbc_getiv.c	Sat Jun 10 16:39:40 2006 +0000
@@ -0,0 +1,45 @@
+/* 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, [email protected], http://libtomcrypt.org
+ */
+#include "tomcrypt.h"
+
+/**
+   @file cbc_getiv.c
+   CBC implementation, get IV, Tom St Denis
+*/
+
+#ifdef CBC
+
+/**
+   Get the current initial vector
+   @param IV   [out] The destination of the initial vector
+   @param len  [in/out]  The max size and resulting size of the initial vector
+   @param cbc  The CBC state
+   @return CRYPT_OK if successful
+*/
+int cbc_getiv(unsigned char *IV, unsigned long *len, symmetric_CBC *cbc)
+{
+   LTC_ARGCHK(IV  != NULL);
+   LTC_ARGCHK(len != NULL);
+   LTC_ARGCHK(cbc != NULL);
+   if ((unsigned long)cbc->blocklen > *len) {
+      return CRYPT_BUFFER_OVERFLOW;
+   }
+   XMEMCPY(IV, cbc->IV, cbc->blocklen);
+   *len = cbc->blocklen;
+
+   return CRYPT_OK;
+}
+
+#endif
+
+/* $Source: /cvs/libtom/libtomcrypt/src/modes/cbc/cbc_getiv.c,v $ */
+/* $Revision: 1.3 $ */
+/* $Date: 2005/05/05 14:35:59 $ */