X-Git-Url: https://git.pterodactylus.net/?p=fms.git;a=blobdiff_plain;f=libs%2Flibtomcrypt%2Fmisc%2Fcrypt%2Fcrypt_register_cipher.c;fp=libs%2Flibtomcrypt%2Fmisc%2Fcrypt%2Fcrypt_register_cipher.c;h=8d74cc55a9502513fc9fb3b9ad0c0840dd15f2b2;hp=0000000000000000000000000000000000000000;hb=109c20e6f822c6efa465af31249e5608469253b6;hpb=9ae3b1434e51788e6feb72e1415ec800d05c535a

diff --git a/libs/libtomcrypt/misc/crypt/crypt_register_cipher.c b/libs/libtomcrypt/misc/crypt/crypt_register_cipher.c
new file mode 100644
index 0000000..8d74cc5
--- /dev/null
+++ b/libs/libtomcrypt/misc/crypt/crypt_register_cipher.c
@@ -0,0 +1,54 @@
+/* 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 crypt_register_cipher.c
+  Register a cipher, Tom St Denis
+*/
+
+/**
+   Register a cipher with the descriptor table
+   @param cipher   The cipher you wish to register
+   @return value >= 0 if successfully added (or already present), -1 if unsuccessful
+*/
+int register_cipher(const struct ltc_cipher_descriptor *cipher)
+{
+   int x;
+
+   LTC_ARGCHK(cipher != NULL);
+
+   /* is it already registered? */
+   LTC_MUTEX_LOCK(&ltc_cipher_mutex);
+   for (x = 0; x < TAB_SIZE; x++) {
+       if (cipher_descriptor[x].name != NULL && cipher_descriptor[x].ID == cipher->ID) {
+          LTC_MUTEX_UNLOCK(&ltc_cipher_mutex);
+          return x;
+       }
+   }
+
+   /* find a blank spot */
+   for (x = 0; x < TAB_SIZE; x++) {
+       if (cipher_descriptor[x].name == NULL) {
+          XMEMCPY(&cipher_descriptor[x], cipher, sizeof(struct ltc_cipher_descriptor));
+          LTC_MUTEX_UNLOCK(&ltc_cipher_mutex);
+          return x;
+       }
+   }
+
+   /* no spot */
+   LTC_MUTEX_UNLOCK(&ltc_cipher_mutex);
+   return -1;
+}
+
+/* $Source: /cvs/libtom/libtomcrypt/src/misc/crypt/crypt_register_cipher.c,v $ */
+/* $Revision: 1.5 $ */
+/* $Date: 2006/03/31 14:15:35 $ */