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    • 1. 发明授权
    • Low latency block cipher
    • 低延迟块密码
    • US09336160B2
    • 2016-05-10
    • US12262092
    • 2008-10-30
    • Philip Michael HawkesLu XiaoGregory Gordon RoseSteve Millendorf
    • Philip Michael HawkesLu XiaoGregory Gordon RoseSteve Millendorf
    • G06F12/14H04L9/08H04L9/06
    • G06F12/1408H04L9/0618H04L2209/125H04L2209/24
    • A block cipher is provided that secures data by encrypting it based on the memory address where it is to be stored. When encrypting data for storage in the memory address, the memory address is encrypted in a first plurality of block cipher rounds. Data round keys are generated using information from the first plurality of block cipher rounds. Data to be stored is combined with the encrypted memory address and encrypted in a second plurality of block cipher rounds using the data round keys. The encrypted data is then stored in the memory location. When decrypting data, the memory address is again encrypted as before while the encrypted stored data is decrypted in a second plurality of the block cipher rounds using the data round keys to obtain a partially decrypted data. The partially decrypted data is combined with the encrypted memory address to obtain fully decrypted data.
    • 提供了一种分组密码,其通过基于要存储的存储器地址对其进行加密来保护数据。 当将存储在存储器地址中的数据进行加密时,存储器地址以第一多个块密码循环加密。 使用来自第一多个块密码轮的信息来生成数据循环密钥。 要存储的数据与加密的存储器地址组合,并使用数据循环密钥在第二多个块密码轮中进行加密。 然后将加密的数据存储在存储器位置。 当解密数据时,如先前一样再次加密存储器地址,同时使用数据循环密钥在第二多个块密码轮中对加密的存储数据进行解密以获得部分解密的数据。 部分解密的数据与加密的存储器地址组合以获得完全解密的数据。
    • 2. 发明授权
    • Apparatus and method for evaluating a cipher structure's resistance to cryptanalysis
    • 用于评估密码结构对密码分析的抵抗力的装置和方法
    • US08098816B2
    • 2012-01-17
    • US12253767
    • 2008-10-17
    • Lu XiaoPhilip Michael HawkesGregory Gordon Rose
    • Lu XiaoPhilip Michael HawkesGregory Gordon Rose
    • H04L9/28
    • H04L9/002H04L9/0631
    • Disclosed is a method for evaluating resistance to cryptanalysis of a cipher structure having a diffusion element including a linear transformation placed between differently-sized confusion elements at an input and an output of the diffusion element. A generalized minimum number of non-zero symbols at the diffusion element's input and output is determined. The diffusion element's input is divided into subset inputs, each having a size corresponding to the size of each confusion element at the diffusion element input. For each subset input, a subset number of non-zero symbols at the subset input and the diffusion element output is determined. Each subset number is summed to generate a summed subset number. The summed subset number is subtracted from the generalized minimum number to generate a worst-case number. An upper bound of a maximum differential characteristic probability is calculated and used to evaluate the cipher structure.
    • 公开了一种用于评估具有扩散元件的密码分析电阻的方法,该扩散元件包括放置在扩散元件的输入端和输出端的不同大小的混淆元件之间的线性变换。 确定扩散元件输入和输出处的非零符号的通用最小数量。 扩散元件的输入被分成子集输入,每个子集具有与扩散元素输入处的每个混淆元素的大小相对应的大小。 对于每个子集输入,确定子集输入处的非零符号的子集数量和扩散元素输出。 将每个子集数相加以生成一个总和子集。 从广义最小数字中减去总和子集数,以生成最坏情况数。 计算最大微分特征概率的上限并用于评估密码结构。
    • 3. 发明申请
    • APPARATUS AND METHOD FOR EVALUATING A CIPHER STRUCTURE'S RESISTANCE TO CRYPTANALYSIS
    • 评估水泥结构抗CRYPTANALYSIS的电阻和方法
    • US20100098242A1
    • 2010-04-22
    • US12253767
    • 2008-10-17
    • Lu XiaoPhilip Michael HawkesGregory Gordon Rose
    • Lu XiaoPhilip Michael HawkesGregory Gordon Rose
    • H04L9/28
    • H04L9/002H04L9/0631
    • Disclosed is a method for evaluating resistance to cryptanalysis of a cipher structure having a diffusion element including a linear transformation placed between differently-sized confusion elements at an input and an output of the diffusion element. A generalized minimum number of non-zero symbols at the diffusion element's input and output is determined. The diffusion element's input is divided into subset inputs, each having a size corresponding to the size of each confusion element at the diffusion element input. For each subset input, a subset number of non-zero symbols at the subset input and the diffusion element output is determined. Each subset number is summed to generate a summed subset number. The summed subset number is subtracted from the generalized minimum number to generate a worst-case number. An upper bound of a maximum differential characteristic probability is calculated and used to evaluate the cipher structure.
    • 公开了一种用于评估具有扩散元件的密码分析电阻的方法,该扩散元件包括放置在扩散元件的输入端和输出端的不同大小的混淆元件之间的线性变换。 确定扩散元件输入和输出处的非零符号的通用最小数量。 扩散元件的输入被分成子集输入,每个子集具有与扩散元素输入处的每个混淆元素的大小相对应的大小。 对于每个子集输入,确定子集输入处的非零符号的子集数量和扩散元素输出。 将每个子集数相加以生成一个总和子集。 从广义最小数字中减去总和子集数,以生成最坏情况数。 计算最大微分特征概率的上限,并用于评估密码结构。