-MD2, MD5, MD2_Init, MD2_Update, MD2_Final, MD5_Init, MD5_Update,
-MD5_Final - MD2 and MD5 hash functions
+MD2, MD4, MD5, MD2_Init, MD2_Update, MD2_Final, MD4_Init, MD4_Update,
+MD4_Final, MD5_Init, MD5_Update, MD5_Final - MD2, MD4, and MD5 hash functions