Question

An encryption scheme is unconditionally secure if the ciphertext generated does not contain enough information to determine uniquely the corresponding plaintext, no matter how much cipher text is available.

(a) True

(b) False

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

Asked question is from Symmetric Cipher Models and Elementary Number Theory in section Classical Encryption Techniques of Cryptograph & Network Security

Answer 1

The correct option is (a) True

To explain: The above statement is the definition for unconditionally secure cipher systems.