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procedures for the identification of participants as well as for the generation and verification of electronic signatures in a data exchange system.
procedures for the identification of participants as well as for the generation and verification of electronic signatures in a data exchange system.
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机译：识别参与者以及在数据交换系统中生成和验证电子签名的程序。
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摘要
In the data exchange system operating with processor chip-cards, the chip-card transmits encrypted identification data I, v and, on the basis of a random discrete logarithm r, transmits an exponential value x = 2r (mod p) to the subscriber, who in turn transmits a random bit string e to the chip-card. Through multiplication of the stored secret keys s by the bit string e and addition of the random number r, the chip-card calculates a y-value which it transmits to the subscriber, who in turn calculates an x-value from y, v and e and checks whether the calculated x-value matches the transmitted x-value. To provide an electronic signature, a hash value e is first calculated from an x-value and the message m which is to be signed, and subsequently a y-value is calculated from r, sj and e. The numbers x and y then provide the electronic signature for the message m. IMAGE
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