--- cryptokit.mli.old	2010-07-21 22:10:37.000000000 +0100
+++ cryptokit.mli	2010-07-21 22:13:09.000000000 +0100
@@ -483,6 +483,16 @@
         applied to SHA-1.  The returned hash values are 160 bits (20 bytes)
         long.  The [key] argument is the MAC key; it can have any length,
         but a minimal length of 20 bytes is recommended. *)
+  val hmac_sha256: string -> hash
+    (** [hmac_sha256 key] returns a MAC based on the HMAC construction (RFC2104)
+        applied to SHA-256.  The returned hash values are 256 bits (32 bytes)
+        long.  The [key] argument is the MAC key; it can have any length,
+        but a minimal length of 32 bytes is recommended. *)
+  val hmac_ripemd160: string -> hash
+    (** [hmac_ripemd160 key] returns a MAC based on the HMAC construction (RFC2104)
+        applied to RIPEMD-160.  The returned hash values are 160 bits (20 bytes)
+        long.  The [key] argument is the MAC key; it can have any length,
+        but a minimal length of 20 bytes is recommended. *)
   val hmac_md5: string -> hash
     (** [hmac_md5 key] returns a MAC based on the HMAC construction (RFC2104)
         applied to MD5.  The returned hash values are 128 bits (16 bytes)