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公开(公告)号:KR1020030059500A
公开(公告)日:2003-07-10
申请号:KR1020010088363
申请日:2001-12-29
Applicant: 한국전자통신연구원
IPC: H04L9/06
CPC classification number: H04L9/0631 , H04L9/0625 , H04L9/0662
Abstract: PURPOSE: A pseudo-random generator using a block password having an SPN structure and a method thereof are provided to improve a stability side by changing a key value through an update algorithm each time a random is generated. CONSTITUTION: A reseeding module(102) collects a noise suited to each platform. The reseeding module(102) generates a key value based on noise information. The key value is used as an input of a random function. A pseudo-random generating module(104) includes two random function value converters. The pseudo-random generating module(104) uses the key value and a state value as inputs of the first random function value converter to generate the first random function value. The pseudo-random generating module(104) uses the first random function value and the key value as inputs of the second random function value converter to generate the first random function value to generate the second random function value. The pseudo-random generating module(104) outputs the second random function value as a pseudo-random value.
Abstract translation: 目的:提供一种使用具有SPN结构的块密码及其方法的伪随机生成器,以通过每当产生随机时通过更新算法改变键值来改善稳定性侧。 构成:再接种模块(102)收集适合于每个平台的噪声。 重新进给模块(102)基于噪声信息生成键值。 键值用作随机函数的输入。 伪随机生成模块(104)包括两个随机函数值转换器。 伪随机生成模块(104)使用键值和状态值作为第一随机函数值转换器的输入来生成第一随机函数值。 伪随机生成模块(104)使用第一随机函数值和键值作为第二随机函数值转换器的输入来生成第一随机函数值以生成第二随机函数值。 伪随机生成模块(104)将第二随机函数值作为伪随机值输出。