The following topics are immediate subtopics of Cryptography.

Term: Cipher
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 Definition: In cryptography, a cipher (or cypher) is an algorithm for performing encryption or decryption — a series of welldefined steps that can be followed as a procedure. An alternative, less common term ...

Term: Cryptanalysis
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 Definition: Cryptanalysis (from the Greek..., "to loosen" or "to untie") is the study of methods for obtaining the meaning of encrypted information, without access to the secret information which is normally r...

Term: Encryption
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 Definition: In cryptography, encryption is the process of transforming information (referred to as plaintext) using an algorithm (called cipher) to make it unreadable to anyone except those possessing special ...

Term: Public Key
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 Definition: Publickey cryptography is a relatively new cryptographic approach whose distinguishing characteristic is the use of asymmetric key algorithms instead of or in addition to symmetric key algorithms....

Term: Symmetric Key
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 Definition: Symmetrickey algorithms are a class of algorithms for cryptography that use trivially related, often identical, cryptographic keys for both decryption and encryption. The encryption key is trivial...