密码学原理与实践(第三版)冯登国--课后习题答案.pdf
摘要: Homework of CryptographyTony ZhuDecember 20, 20101 Classical Cryptography1.21 (c) A?ne Cipher Solution: Since in the a?ne cryptosystem only φ(26) × 26 = 312 cases for key K = (a, b), list all the case...
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