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In public key cryptosystem _____ keys are used for encryption and decryption.

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In public key cryptosystem _____ keys are used for encryption and decryption.

(a) Same

(b) Different

(c) Encryption Keys

(d) None of the mentioned

The question was posed to me during an interview for a job.

Asked question is from Public Key Cryptosystems topic in division Encryption and Decryption of Digital Communications

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Right option is (b) Different

The explanation is: In conventional cryptosystem, same keys are used for encryption and decryption where as in public key cryptosystem different keys are used.

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