Cryptanalysis

• 1) Operations performed in defeating cryptographic protection without an initial knowledge of the key employed in providing the protection.
• 2) The study of mathematical techniques for attempting to defeat cryptographic techniques and information system security. This includes the process of looking for errors or weaknesses in the implementation of an algorithm or of the algorithm itself.

1. Operations performed in converting encrypted messages to plain text without initial knowledge of the crypto-algorithm and/or key employed in the encryption. [INFOSEC-99] 2. The study of encrypted texts. 3. The analysis of a cryptographic system and/or its inputs and outputs to derive confidential variables and/or sensitive data including cleartext [7498-2].