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    • 3. 发明申请
    • IMPROVED CIPHER SYSTEM
    • 改进的CIPHER系统
    • WO2006111950A3
    • 2009-04-30
    • PCT/IL2006000312
    • 2006-03-09
    • NDS LTDMANTIN ITSIKSELLA YARONWAISBARD EREZ
    • MANTIN ITSIKSELLA YARONWAISBARD EREZ
    • H04L9/00G06F21/72G06F21/74
    • G06F21/74G06F21/72G06F2221/2105H04L9/0662
    • A system including a pseudo-random number generator (12) having a register to store an extended state having a reduced state and a dynamic constant, an initialization module to initialize a part of the extended state based on a Key (14) and/or an Initial Value (16), a state update module to update the reduced state, an output word module to generate output words, the state update module and the output word module being adapted to operate through cyclical rounds, each round including updating the reduced state and then generating one of the output words, and an update dynamic constant module to update the dynamic constant, wherein in a majority of the rounds, updating of the reduced state and/or generation of the output word is based on the dynamic constant, and the dynamic constant is only updated in a minority of the rounds. Related apparatus and method are also described.
    • 一种包括伪随机数发生器(12)的系统,具有用于存储具有减小状态和动态常数的扩展状态的寄存器,用于基于密钥(14)初始化部分扩展状态的初始化模块和/或 初始值(16),更新缩减状态的状态更新模块,用于生成输出字的输出字模块,状态更新模块和输出字模块适于通过周期性循环进行操作,每轮包括更新缩减状态 然后生成一个输出字,以及更新动态常量模块来更新动态常数,其中在大部分回合中,减小状态的更新和/或输出字的生成基于动态常数,以及 动态常数仅在少数几轮中更新。 还描述了相关装置和方法。
    • 7. 发明申请
    • METHOD AND SYSTEM FOR BLOCK CIPHER ENCRYPTION
    • 块加密方法和系统
    • WO2008117142A1
    • 2008-10-02
    • PCT/IB2007054592
    • 2007-11-12
    • NDS LTDMANTIN ITSIKWAISBARD EREZKIPNIS AVIAD
    • MANTIN ITSIKWAISBARD EREZKIPNIS AVIAD
    • H04L9/06
    • H04L9/0625H04L9/002H04L2209/12H04L2209/24
    • A method and system of encrypting a block of data is described, the method including providing a combining unit operative to combine a key with a block of data, the block of data expressed as a block of bits, providing a mix and condense unit (MAC) operative to mix bits included in the block of bits among themselves, providing a plurality of layers of S-boxes, the S-boxes operative to receive an input including an input which has not yet been input into the mix and condense unit and to provide an output including an input to the mix and condense unit, receiving an input including the block of data expressed as the block of bits, combining, at the combining unit, the block of bits with a key, receiving an output of the combining unit as an input, substituting bits including the input to the plurality of layers of S-boxes with bits including the output of the plurality of layers of S-boxes, outputting the output of the plurality of layers of S-boxes to the mix and condense unit, and mixing, at the mix and condense unit, the output of the plurality of layers of S-boxes, thereby producing an encrypted block of bits.
    • 描述了加密数据块的方法和系统,所述方法包括提供组合单元,其操作以将密钥与数据块组合,所述数据块表示为比特块,提供混合和冷凝单元(MAC )可操作以将包括在位块中的位混合在一起,提供多层S盒,S盒用于接收包括还没有输入到混合和冷凝单元中的输入的输入,以及 提供包括输入到混合和冷凝单元的输出,接收包括表示为比特块的数据块的输入,在组合单元处用密钥组合比特块,接收组合单元的输出 作为输入,使用包括多个S盒的输出的比特将包括输入到S盒的多个层的比特替换,将多个S盒的多个层的输出输出到混合和缩合 单位和混合 在混合和冷凝单元处,多层S盒的输出,从而产生加密的比特块。
    • 8. 发明申请
    • METHOD AND SYSTEM FOR BLOCK CIPHER ENCRYPTION
    • 块加密方法和系统
    • WO2007043045A2
    • 2007-04-19
    • PCT/IL2006001167
    • 2006-10-05
    • NDS LTDMANTIN ITSIKWAISBARD EREZKIPNIS AVIAD
    • MANTIN ITSIKWAISBARD EREZKIPNIS AVIAD
    • G06F21/24
    • H04L9/0625H04L2209/12H04L2209/24
    • A method of encrypting a block of data, is described, the method including providing a combining unit operative to combine a key with a block of data, the block of data expressed as a block of bits, providing a mix and condense unit operative to mix bits included in the block of bits among themselves, receiving an input including the block of data expressed as the block of bits, combining, at the combining unit, the block of bits with a key, and mixing, at the mixing and condensing unit, the combined block of bits, wherein the mix and condense unit includes a plurality of layers, each layer among the plurality of layers including a plurality of mini-functions. Related apparatus and methods are described.
    • 描述了加密数据块的方法,所述方法包括提供组合单元,其操作以将密钥与数据块组合,所述数据块表示为比特块,提供混合和冷凝单元,其可操作以混合 包括在它们之间的比特块中的比特,接收包括表示为比特数据块的数据块的输入,在组合单元处用密钥合并比特块,并在混合和聚合单元混合, 所述组合块,其中所述混合和冷凝单元包括多个层,所述多个层中的每个层包括多个微功能。 描述相关的装置和方法。