diff libtomcrypt/src/modes/lrw/lrw_getiv.c @ 382:0cbe8f6dbf9e

propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 2af22fb4e878750b88f80f90d439b316d229796f) to branch 'au.asn.ucc.matt.dropbear' (head 02c413252c90e9de8e03d91e9939dde3029f5c0a)
author Matt Johnston <matt@ucc.asn.au>
date Thu, 11 Jan 2007 02:41:05 +0000
parents
children f849a5ca2efc
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libtomcrypt/src/modes/lrw/lrw_getiv.c	Thu Jan 11 02:41:05 2007 +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.com
+ */
+#include "tomcrypt.h"
+
+/**
+   @file lrw_getiv.c
+   LRW_MODE implementation, Retrieve the current IV, Tom St Denis
+*/
+
+#ifdef LTC_LRW_MODE
+
+/**
+  Get the IV for LRW
+  @param IV      [out] The IV, must be 16 octets
+  @param len     Length ... must be at least 16 :-)
+  @param lrw     The LRW state to read
+  @return CRYPT_OK if successful
+*/
+int lrw_getiv(unsigned char *IV, unsigned long *len, symmetric_LRW *lrw)
+{
+   LTC_ARGCHK(IV != NULL);
+   LTC_ARGCHK(len != NULL);
+   LTC_ARGCHK(lrw != NULL);
+   if (*len < 16) {
+       *len = 16;
+       return CRYPT_BUFFER_OVERFLOW;
+   }
+
+   XMEMCPY(IV, lrw->IV, 16);
+   *len = 16;
+   return CRYPT_OK;
+}
+
+#endif
+/* $Source: /cvs/libtom/libtomcrypt/src/modes/lrw/lrw_getiv.c,v $ */
+/* $Revision: 1.9 $ */
+/* $Date: 2006/06/29 01:53:13 $ */