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首頁> 外國專利> PSEUDO RANDOM NUMBER SEQUENCE GENERATING DEVICE, ENCRYPTION AND DECRYPTION DEVICE, PSEUDO RANDOM NUMBER SEQUENCE GENERATING METHOD, ENCRYPTION AND DECRYPTION METHOD, PSEUDO RANDOM NUMBER SEQUENCE GENERATING PROGRAM, AND ENCRYPTION AND DECRYPTION PROGRAM

PSEUDO RANDOM NUMBER SEQUENCE GENERATING DEVICE, ENCRYPTION AND DECRYPTION DEVICE, PSEUDO RANDOM NUMBER SEQUENCE GENERATING METHOD, ENCRYPTION AND DECRYPTION METHOD, PSEUDO RANDOM NUMBER SEQUENCE GENERATING PROGRAM, AND ENCRYPTION AND DECRYPTION PROGRAM

機譯：偽隨機數(shù)序列生成設(shè)備，加密和解密設(shè)備，偽隨機數(shù)序列生成方法，加密和解密方法，偽隨機數(shù)序列生成程序，加密和解密

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PROBLEM TO BE SOLVED: To enable generation of a pseudo random number sequence, encryption and decryption by using mapping conversion such as two-dimensional cat map which has been conventionally said to be unsuitable for pseudo random number sequence generation, encryption, or decryption.;SOLUTION: An n-dimensional vector sequence S(1), S(2), ..., S(K) of a w-bit integer received by a seed reception section 10 is provided to an initialization section 11 to obtain an n-dimensional vector sequence X(1), X(2), ..., X(K) of a w-bit integer. After mapping conversion using a conversion matrix determined from the n-dimensional vector sequence X(1), X(2), ..., X(K) is applied by the converting section 12, a rotation operation of the prescribed number of rotation bits is performed to a part or the whole of it by a rotation section 13. The result is updated by an updating section 14, and mapping conversion and rotation operation are repeated prescribed times by the conversion section 12 and the rotation section 13 respectively. Thus, a multi-dimensional pseudo random number sequence having high randomness is generated.;COPYRIGHT: (C)2008,JPO&INPIT
機譯：解決的問題：為了能夠產(chǎn)生偽隨機數(shù)序列，通過使用映射轉(zhuǎn)換（例如二維cat map）進行加密和解密，該轉(zhuǎn)換通常被認為不適用于偽隨機數(shù)序列的產(chǎn)生，加密或解密。解決方案：w的n維向量序列S （1），S （2），...，S （K）由種子接收部分10接收的1比特整數(shù)被提供給初始化部分11，以獲得n維向量序列X （1），X （2），...。 ..，w位整數(shù)的X （K）。使用根據(jù)n維向量序列X （1），X （2），...，X （K）確定的轉(zhuǎn)換矩陣進行映射轉(zhuǎn)換后由轉(zhuǎn)換部分12施加，由旋轉(zhuǎn)部分13對其部分或全部執(zhí)行規(guī)定數(shù)目的旋轉(zhuǎn)位的旋轉(zhuǎn)操作。結(jié)果由更新部分14更新，并映射分別由轉(zhuǎn)換部分12和旋轉(zhuǎn)部分13重復轉(zhuǎn)換和旋轉(zhuǎn)操作規(guī)定的時間。因此，產(chǎn)生了具有高隨機性的多維偽隨機數(shù)序列。; COPYRIGHT：（C）2008，JPO＆INPIT

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