Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun cryptography

2 senses of cryptography

Sense 1
cryptanalysis, cryptanalytics, cryptography, cryptology -- (the science of analyzing and deciphering codes and ciphers and cryptograms)
       => science, scientific discipline -- (a particular branch of scientific knowledge; "the science of genetics")

Sense 2
cryptography, coding, secret writing, steganography -- (act of writing in code or cipher)
       => writing, committal to writing -- (the activity of putting something in written form; "she did the thinking while he did the writing")