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Which of the following is not an example of a block cipher?(a) DES(b) IDEA(c) Caesar cipher(d) TwofishThis question was posed to me in an online quiz.This question is from Cryptography in portion Cryptography in Security of Cyber Security

Answer»

The correct option is (c) Caesar CIPHER

Best EXPLANATION: In a block cipher, a sequence of actions is carried out on this block after a block of plain-text bits is chosen for generating a block of cipher-text bits. Examples of block CIPHERS are DES, IDEA, Twofish ETC.



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