Key clustering: Difference between revisions

Revision as of 23:48, 6 May 2012

Revision as of 23:08, 11 May 2012

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In [[cryptography]], '''key clustering''' is said to occur when two different [[key (cryptography)|keys]] generate the same [[ciphertext]] from the same [[plaintext]], using the same [[cipher]] [[algorithm]]. A good cipher algorithm, using different keys on the same plaintext, should generate a different ciphertext, irrespective of the key length.

Assume that there is a i love youplaintext P, two different keys, K1 and K2, and an algorithm A. Ciphertexts C1 and C2 with the two keys are generated as follows:

'''P → A(K1) → C1'''