crypto: Fix dead links

Signed-off-by: Adrian-Ken Rueegsegger <ken@codelabs.ch>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/gf128mul.c

@@ -4,7 +4,7 @@
  * Copyright (c) 2006, Rik Snel <rsnel@cube.dyndns.org>
  *
  * Based on Dr Brian Gladman's (GPL'd) work published at
- * http://fp.gladman.plus.com/cryptography_technology/index.htm
+ * http://gladman.plushost.co.uk/oldsite/cryptography_technology/index.php
  * See the original copyright notice below.
  *
  * This program is free software; you can redistribute it and/or modify it

crypto/sha256_generic.c

@@ -2,7 +2,7 @@
  * Cryptographic API.
  *
  * SHA-256, as specified in
- * http://csrc.nist.gov/cryptval/shs/sha256-384-512.pdf
+ * http://csrc.nist.gov/groups/STM/cavp/documents/shs/sha256-384-512.pdf
  *
  * SHA-256 code by Jean-Luc Cooke <jlcooke@certainkey.com>.
  *