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Known-plaintext attack

The known-plaintext attack (KPA) is an attack model for cryptanalysis where the attacker has access to both the plaintext (called a crib) and its encrypted version (ciphertext). These can be used to reveal secret keys and code books. The term "crib" originated at Bletchley Park, the British World War II decryption operation, where it was defined as:

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Known-plaintext attack

Nodes35
Edges34
Triples0
Avg. degree1.94
Density0.057143
Components1

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enigma bletchley cipher message park plaintext would crib german war messages world known-plaintext attack used ii ciphertext cribs contain padding

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