Two issues in public-key cryptography : RSA bit security and a new knapsack type system
著者
書誌事項
Two issues in public-key cryptography : RSA bit security and a new knapsack type system
（ACM distinguished dissertations, 1985）
MIT Press, c1986
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注記
Originally presented as the author's thesis (doctoral)--MIT, 1985
Bibliography: p. [72]-76
内容説明・目次
内容説明
This book explores public key cryptographic systems, first investigating the question of cryptographic security of bits in the RSA encryption and then constructing a new knapsack type public key cryptosystem, based on arithmetic in finite fields.In Part I, two problems involving the RSA encryption of a message are proved to be equivalent. This equivalence implies that an adversary, given the ciphertext, can't do better than guessing unless s/he can break the RSA code. The results generated by the author's proof indicate that Rabin/RSA encryption can be directly used for pseudo random bit generation.A new knapsack type public key cryptosystem is introduced in Part II, along with a detailed description of its implementation. The system is based on a novel application of arithmetic in finite fields, following a construction by Bose and Chowla. By choosing appropriate parameters, the density of the resulting knapsack can be controlled. In particular, the density can be made high enough to foil low-density attacks against this new system. At present there are no known attacks capable of breaking the system in a reasonable amount of time.Ben-Zion Chor received his doctorate from MIT where he is currently a Post Doctoral Fellow in the Computer Science Laboratory. "Two Issues in Public Key Cryptography: RSA Bit Security and a New Knapsack Type System" is a 1985 ACM Distinguished Dissertation.
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