cryptographical

cryptographical
    adj 1: of or relating to cryptanalysis [syn: {cryptanalytic},
           {cryptographic}, {cryptographical}, {cryptologic},
           {cryptological}]
    

Cryptographic \Cryp`to*graph"ic\ (kr?p`t?-gr?f"?k),
Cryptographical \Cryp`to*graph"ic*al\ (kr?p`t?-gr?f"?-kal), a.
   Relating to cryptography; written in secret characters or in
   cipher, or with sympathetic ink.
   [1913 Webster]