commit files needed for zpm-fetchurl

[zpackage] / libtomcrypt / src / misc / crypt / crypt_find_cipher_any.c

diff --git a/libtomcrypt/src/misc/crypt/crypt_find_cipher_any.c b/libtomcrypt/src/misc/crypt/crypt_find_cipher_any.c
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+++ b/libtomcrypt/src/misc/crypt/crypt_find_cipher_any.c
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+/* 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.
+ */
+#include "tomcrypt.h"
+
+/**
+  @file crypt_find_cipher_any.c
+  Find a cipher in the descriptor tables, Tom St Denis
+*/
+
+/**
+   Find a cipher flexibly.  First by name then if not present by block and key size
+   @param name        The name of the cipher desired
+   @param blocklen    The minimum length of the block cipher desired (octets)
+   @param keylen      The minimum length of the key size desired (octets)
+   @return >= 0 if found, -1 if not present
+*/
+int find_cipher_any(const char *name, int blocklen, int keylen)
+{
+   int x;
+
+   if(name != NULL) {
+      x = find_cipher(name);
+      if (x != -1) return x;
+   }
+
+   LTC_MUTEX_LOCK(&ltc_cipher_mutex);
+   for (x = 0; x < TAB_SIZE; x++) {
+       if (cipher_descriptor[x].name == NULL) {
+          continue;
+       }
+       if (blocklen <= (int)cipher_descriptor[x].block_length && keylen <= (int)cipher_descriptor[x].max_key_length) {
+          LTC_MUTEX_UNLOCK(&ltc_cipher_mutex);
+          return x;
+       }
+   }
+   LTC_MUTEX_UNLOCK(&ltc_cipher_mutex);
+   return -1;
+}
+
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */