diff crypt_register_cipher.c @ 0:d7da3b1e1540 libtomcrypt

put back the 0.95 makefile which was inadvertently merged over
author Matt Johnston <matt@ucc.asn.au>
date Mon, 31 May 2004 18:21:40 +0000
parents
children 5d99163f7e32
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crypt_register_cipher.c	Mon May 31 18:21:40 2004 +0000
@@ -0,0 +1,36 @@
+/* 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 "mycrypt.h"
+
+int register_cipher(const struct _cipher_descriptor *cipher)
+{
+   int x;
+
+   _ARGCHK(cipher != NULL);
+
+   /* is it already registered? */
+   for (x = 0; x < TAB_SIZE; x++) {
+       if (cipher_descriptor[x].name != NULL && cipher_descriptor[x].ID == cipher->ID) {
+          return x;
+       }
+   }
+
+   /* find a blank spot */
+   for (x = 0; x < TAB_SIZE; x++) {
+       if (cipher_descriptor[x].name == NULL) {
+          memcpy(&cipher_descriptor[x], cipher, sizeof(struct _cipher_descriptor));
+          return x;
+       }
+   }
+
+   /* no spot */
+   return -1;
+}