Substitution: The process of replacing one element with another. In cryptography, substitution is a fundamental method used in various types of ciphers where units of plaintext are replaced with the corresponding units of ciphertext according to a fixed system. The “units” may be single letters, pairs of letters, triplets of letters, mixtures of the above, and so forth.
Categories: CC D5: Security Operations | CCSP D2: Cloud Data Security | CISM D3: Information Security Program | CISSP D3: Security Architecture and Engineering | Security+ D1: General Security Concepts | SSCP D5: Cryptography
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