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Books > Reference & Interdisciplinary > Communication studies > Coding theory & cryptology
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Cryptography - Proceedings of the Workshop on Cryptography, Burg Feuerstein, Germany, March 29 - April 2, 1982 (Paperback, 1983 ed.)
Loot Price: R1,726
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Cryptography - Proceedings of the Workshop on Cryptography, Burg Feuerstein, Germany, March 29 - April 2, 1982 (Paperback, 1983 ed.)
Series: Lecture Notes in Computer Science, 149
Expected to ship within 10 - 15 working days
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T. Beth (Ed.): Cryptography - EUROCRYPT '82, LNCS 149, pp. 1-28,
1983. 0 Springer-Verlag Berlin Heidelberg 1983 3 Having all of a
sudden left the shady corner of semi-military art, modern
cryptography has become a central topic of research in all areas of
communication science. Definitions (cf. Bauer pp. 31 - 48)
Cryptographic measures are applied to p- tect valuable data during
transmission against unwanted interception INTERCEPTOR Fig. A:
passive violation and (possibly undectable) forgery . Fig. 2:
acti-se violation In accordance with the subsequent paper of Bauer
(pp. 31 - 481, the technique applied to meet these requirements is
called en- tion. In this process the transmitter enciphers (or
encrypts) a plaintext message into a ciphertext. 4 ciphertexc
ciphering Fig. 3: The Wire-tap-channel This transformation is
called a cipher(function) which the au- rized receiver deciphers
(decrypts). An enemy is a person or institution who wants illegal
access to the messages. Assuming that the enemy can only get hold
of the ciph- texts, he has to perform a cryptanalysis in order to
reconstitute the plaintexts. To add to the difficulties for a
cryptanalyst, the cipher functions are chosen to a varying
parameter, called the key. A generator cryptosystem consists of a
class of injective cipher functions ES: M-C, mapping plaintext
messages(EM) into ciphertexts(EC) . The parameter s runs through
the set K of keys. These formulations are best demonstrated by the
basic, classical examples.
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