--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pkcs_5_1.c	Mon May 31 18:25:41 2004 +0000
@@ -0,0 +1,63 @@
+/* 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>
+
+/* PKCS #5, Algorithm #1 */
+#ifdef PKCS_5
+
+int pkcs_5_alg1(const unsigned char *password, unsigned long password_len, 
+                const unsigned char *salt, 
+                int iteration_count,  int hash_idx,
+                unsigned char *out,   unsigned long *outlen)
+{
+   int err;
+   unsigned long x;
+   hash_state md;
+   unsigned char buf[MAXBLOCKSIZE];
+
+   _ARGCHK(password != NULL);
+   _ARGCHK(salt     != NULL);
+   _ARGCHK(out      != NULL);
+   _ARGCHK(outlen   != NULL);
+
+   /* test hash IDX */
+   if ((err = hash_is_valid(hash_idx)) != CRYPT_OK) {
+      return err;
+   }
+
+   /* hash initial password + salt */
+   hash_descriptor[hash_idx].init(&md);
+   hash_descriptor[hash_idx].process(&md, password, password_len);
+   hash_descriptor[hash_idx].process(&md, salt, 8);
+   hash_descriptor[hash_idx].done(&md, buf);
+
+   while (--iteration_count) {
+      // code goes here.
+      x = sizeof(buf);
+      if ((err = hash_memory(hash_idx, buf, hash_descriptor[hash_idx].hashsize, buf, &x)) != CRYPT_OK) {
+         return err;
+      }
+   }
+
+   /* copy upto outlen bytes */
+   for (x = 0; x < hash_descriptor[hash_idx].hashsize && x < *outlen; x++) {
+       out[x] = buf[x];
+   }
+   *outlen = x;
+
+#ifdef CLEAN_STACK 
+   zeromem(buf, sizeof(buf));
+#endif
+
+   return CRYPT_OK;
+}
+
+#endif