This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. The process or skill of communicating in or deciphering secret writings or ciphers.

n. Secret writing.

n. The discipline concerned with communication security (eg, confidentiality of messages, integrity of messages, sender authentication, non-repudiation of messages, and many other related issues), regardless of the used medium such as pencil and paper or computers.

n. The act or art of writing in code or secret characters; also, secret characters, codes or ciphers, or messages written in a secret code.

n. The science which studies methods for encoding messages so that they can be read only by a person who knows the secret information required for decoding, called the key; it includes cryptanalysis, the science of decoding encrypted messages without possessing the proper key, and has several other branches; see for example steganography.

n. The act or art of writing in secret characters.

n. A system of secret or occult characters; that which is written in cipher.

n. act of writing in code or cipher

n. the science of analyzing and deciphering codes and ciphers and cryptograms

"He also relates his subsequent work in cryptography with Steve Pohlig (the Pohlig-Hellman system) and others."

scientific discipline    science   

Glossary of cryptography   

cryptanalysis    cryptology    crypt   

cryptanalysis    steganography   

public-key cryptography    asymmetric cryptography    anticryptography   

cryptosystem    steganography    encryption    cryptographic    cipher    decryption    cepstrum    cryptogram    cmt    communityone