Handbook of Applied Cryptography - chap5

Chia sẻ: Van Kent Kent | Ngày: | Loại File: PDF | Số trang:23

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Handbook of Applied Cryptography - chap5

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The security of many cryptographic systems depends upon the generation of unpredictable quantities. Examples include the keystream in the one-time pad (x1.5.4), the secret key in the DES encryption algorithm (x7.4.2), the primes p; q in the RSA encryption (x8.2) and digital signature (x11.3.1) schemes, the private key a in the DSA (x11.5.1), and the challenges used in challenge-response identification systems (x10.3). In all these cases, the quantities generated must be of sufficient size and be “random” in the sense that the probability of any particular value being selected must be sufficiently small to preclude an adversary from gaining advantage through optimizing a search strategy based on...

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