The Collaborative International Dictionary
Cryptographical
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.
Wiktionary
cryptographical
a. Relating to cryptography; cryptographic.
WordNet
cryptographical
adj. of or relating to cryptanalysis [syn: cryptanalytic, cryptographic, cryptologic, cryptological]
Usage examples of "cryptographical".
Possession of the Qua could give the Russians and Koreans all sorts of cryptographical advantage.
As discussed later, the cryptographical robustness of the key doesn't really matter.