diff src/misc/crypt/crypt_unregister_prng.c @ 191:1c15b283127b libtomcrypt-orig

Import of libtomcrypt 1.02 with manual path rename rearrangement etc
author Matt Johnston <matt@ucc.asn.au>
date Fri, 06 May 2005 13:23:02 +0000
parents
children 39d5d58461d6
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/misc/crypt/crypt_unregister_prng.c	Fri May 06 13:23:02 2005 +0000
@@ -0,0 +1,37 @@
+/* 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 crypt_unregister_prng.c
+  Unregister a PRNG, Tom St Denis
+*/
+
+/**
+  Unregister a PRNG from the descriptor table
+  @param prng   The PRNG descriptor to remove
+  @return CRYPT_OK on success
+*/
+int unregister_prng(const struct ltc_prng_descriptor *prng)
+{
+   int x;
+
+   LTC_ARGCHK(prng != NULL);
+
+   /* is it already registered? */
+   for (x = 0; x < TAB_SIZE; x++) {
+       if (memcmp(&prng_descriptor[x], prng, sizeof(struct ltc_prng_descriptor)) != 0) {
+          prng_descriptor[x].name = NULL;
+          return CRYPT_OK;
+       }
+   }
+   return CRYPT_ERROR;
+}