propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 2af95f00ebd5bb7a28b3817db1218442c935388e)

            to branch 'au.asn.ucc.matt.dropbear' (head ecd779509ef23a8cdf64888904fc9b31d78aa933)

--HG--
extra : convert_revision : d26d5eb2837f46b56a33fb0e7573aa0201abd4d5

1 files changed, 46 insertions, 0 deletions

diff --git a/libtomcrypt/src/modes/cbc/cbc_getiv.c b/libtomcrypt/src/modes/cbc/cbc_getiv.c
new file mode 100644
index 0000000..c54d558
--- /dev/null
+++ b/libtomcrypt/src/modes/cbc/cbc_getiv.c
@@ -0,0 +1,46 @@
+/* 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.com
+ */
+#include "tomcrypt.h"
+
+/**
+   @file cbc_getiv.c
+   CBC implementation, get IV, Tom St Denis
+*/
+
+#ifdef LTC_CBC_MODE
+
+/**
+   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) {
+      *len = cbc->blocklen;
+      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: 1.6 $ */
+/* $Date: 2006/06/29 01:46:46 $ */