发明名称 Encryption apparatus, communication system using the same and method therefor
摘要 <p>In order to attain high speed and secure encryption, a communication apparatus comprises a random number generation circuit for sequentially generating random number sequences which assure difficulty in terms of amount of calculation in cryptoanalyzing the sequences based on output sequences while using a cryptographic key shared by partner stations as an initial value, and an encryption circuit for sequentially encrypting communication texts and outputting cryptograms in a transmitting station and sequentially cryptoanalyzing the cryptograms and outputting the same in a receiving station, faster than the sequential generation of the random numbers by the random number generation circuit. <IMAGE></p>
申请公布号 EP0635956(B1) 申请公布日期 2003.10.22
申请号 EP19940305221 申请日期 1994.07.15
申请人 CANON KABUSHIKI KAISHA 发明人 IWAMURA, KEIICHI;YAMAMOTO, TAKAHISA
分类号 H04L9/22;(IPC1-7):H04L9/22 主分类号 H04L9/22
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