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Pseudo-random number generator, and communication method and apparatus using encrypted text based upon pseudo-random numbers generated by said generator
Pseudo-random number generator, and communication method and apparatus using encrypted text based upon pseudo-random numbers generated by said generator
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机译:伪随机数发生器,以及基于由所述发生器产生的伪随机数使用加密文本的通信方法和装置
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摘要
A communication apparatus through which encryption/decryption processing can be executed at high speed includes a CPU for performing overall control of the apparatus, an encryption unit for encrypting communication data that has been stored in a RAM and outputting encrypted data, and a decryption unit for decrypting encrypted data transmitted from an external communication apparatus and storing the decrypted data in the RAM. The decryption unit issues a request to generate a series of random numbers serving as an encryption key necessary in decryption processing of the encrypted data applied thereto. A pseudo-random number generating circuit generates random numbers and delivers them to the decryption unit. The encryption unit issues a request to generate a series of random numbers serving as an encryption key necessary in encryption. The pseudo-random number generating circuit generates random numbers and delivers them to the encryption unit. The latter generates a cryptogram sentence based upon these random numbers. IMAGE
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