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, 71 insertions, 0 deletions

diff --git a/libtomcrypt/src/mac/xcbc/xcbc_memory.c b/libtomcrypt/src/mac/xcbc/xcbc_memory.c
new file mode 100644
index 0000000..1826b6b
--- /dev/null
+++ b/libtomcrypt/src/mac/xcbc/xcbc_memory.c
@@ -0,0 +1,71 @@
+/* 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 xcbc_process.c
+  XCBC Support, XCBC-MAC a block of memory
+*/
+
+#ifdef LTC_XCBC
+
+/** XCBC-MAC a block of memory 
+  @param cipher     Index of cipher to use
+  @param key        [in]  Secret key
+  @param keylen     Length of key in octets
+  @param in         [in]  Message to MAC
+  @param inlen      Length of input in octets
+  @param out        [out] Destination for the MAC tag
+  @param outlen     [in/out] Output size and final tag size
+  Return CRYPT_OK on success.
+*/
+int xcbc_memory(int cipher, 
+               const unsigned char *key, unsigned long keylen,
+               const unsigned char *in,  unsigned long inlen,
+                     unsigned char *out, unsigned long *outlen)
+{
+   xcbc_state *xcbc;
+   int         err;
+
+   /* is the cipher valid? */
+   if ((err = cipher_is_valid(cipher)) != CRYPT_OK) {
+      return err;
+   }
+
+   /* Use accelerator if found */
+   if (cipher_descriptor[cipher].xcbc_memory != NULL) {
+      return cipher_descriptor[cipher].xcbc_memory(key, keylen, in, inlen, out, outlen);
+   }
+
+   xcbc = XCALLOC(1, sizeof(*xcbc));
+   if (xcbc == NULL) {
+      return CRYPT_MEM;
+   }
+
+   if ((err = xcbc_init(xcbc, cipher, key, keylen)) != CRYPT_OK) {
+     goto done;
+   }
+
+   if ((err = xcbc_process(xcbc, in, inlen)) != CRYPT_OK) {
+     goto done;
+   }
+
+   err = xcbc_done(xcbc, out, outlen);
+done:
+   XFREE(xcbc);
+   return err;
+}
+
+#endif
+
+/* $Source: /cvs/libtom/libtomcrypt/src/mac/xcbc/xcbc_memory.c,v $ */
+/* $Revision: 1.4 $ */
+/* $Date: 2006/11/21 23:02:42 $ */