Conventional Cryptography (Symmetric Ciphers) CPSC415 Biometrics and Cryptography Outline • Stream Ciphers and Block Ciphers • Confusion and Diffusion • DES (Data Encryption Standard) • Exhaustive.

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Transcript Conventional Cryptography (Symmetric Ciphers) CPSC415 Biometrics and Cryptography Outline • Stream Ciphers and Block Ciphers • Confusion and Diffusion • DES (Data Encryption Standard) • Exhaustive.