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    • 1. 发明公开
    • METHOD FOR THE CRYPTOGRAPHIC CONVERSION OF BINARY DATA BLOCKS
    • VERFAHREN ZUR KRYPTOGRAPHISCHEN UMWANDLUNG VONBINÄRENDATENBLÖCKEN
    • EP1087425A1
    • 2001-03-28
    • EP98935436.0
    • 1998-06-19
    • Otkrytoe Aktsionernoe Obschestvo " Moskovskaya Gorodskaya Telefonnaya Set"Moldovyan, Alexandr AndreevichMoldovyan, Nikolay Andreevich
    • MOLDOVYAN, Alexandr AndreevichMOLDOVYAN, Nikolai Andreevich
    • H01L21/00
    • H04L9/0625H04L2209/24
    • The present invention pertains to the field of electrical communications and computer techniques and more precisely relates to cryptographic methods and devices for the ciphering of digital data. This method comprises splitting a data block into N ≥ 2 sub-blocks and sequentially converting said sub-blocks by applying at least one conversion operation on the i-th sub-block, where i ≤ N, said operation depending on the value of the j-th sub-block where j ≤ N. This method is characterised in that the operation depending on the value of the j-th sub-block is a transposition operation of the bits in the i-th sub-block. This method is also characterised in that the transposition operation of the bits in the i-th sub-block, which depends on the value of the j-th sub-block, is carried out according to a secret key before the beginning of the i-th sub-block conversion. This method is further characterised in that a binary vector V is determined prior to the current transposition operation of the bits in the i-th sub-block, which depends on the j-th sub-block, wherein said transposition operation of the bits in the i-th sub-block is carried out according to the value of the vector V. The binary vector is determined according to its value when carrying out the preceding conversion step of one of the sub-blocks and according to the value of the j-th sub-block.
    • 本发明涉及电通信和计算机技术领域,更具体地说涉及用于加密数字数据的加密方法和装置。 该方法包括将数据块分割为N≥2个子块,并通过对第i个子块施加至少一个转换操作来顺序地转换所述子块,其中i≤N,所述操作取决于 第j个子块,其中j≤N。该方法的特征在于根据第j个子块的值的操作是第i个子块中的比特的转置操作。 该方法的特征还在于,第i个子块中的比特的转置操作取决于第j个子块的值,是根据i开始之前的秘密密钥来执行的 第三个子块转换。 该方法的特征还在于,在第i个子块中的比特的当前转置操作之前确定二进制向量V,其依赖于第j个子块,其中所述位的转置操作 根据向量V的值执行第i个子块。当执行子块之一的前一转换步骤时,根据其值来确定二进制向量,并根据j的值 第二个子块。
    • 2. 发明公开
    • METHOD FOR THE BLOCK-ENCRYPTION OF DISCRETE DATA
    • 瓦尔德弗伦
    • EP1059760A1
    • 2000-12-13
    • EP98935435.2
    • 1998-06-19
    • Otkrytoe Aktsionernoe Obschestvo " Moskovskaya Gorodskaya Telefonnaya Set"Moldovyan, Alexandr AndreevichMoldovyan, Nikolay AndreevichSavlukov, Nikolai Viktorovich
    • MOLDOVYAN, Alexandr AndreevichMOLDOVYAN, Nikolai AndreevichSAVLUKOV, Nikolai Viktorovich
    • H04L9/00
    • H04L9/0625H04L2209/24
    • The present invention pertains to the field of electrical communication and computer technology, and more precisely, relates to cryptographic methods and devices for encryption of digital data. The method comprises forming an encryption key in the form of a set of subkeys, breaking down a data block into a number of subblocks N≥2, and alternate converting the subblocks by carrying out a dual-locus operation on a subblock and subkey. This method is characterised in that before carrying-out the dual-locus operation on the i-th subblock and subkey, a conversion operation depending on the j-th subblock is carried out on the subkey, where j≠i. This method is also characterised in that the conversion operation depending on the j-th subblock is a permutation operation on the subkey bits depending on the j-th subblock. This method is further characterised in that the conversion operation depending on the j-th subblock is a cyclic offsetting operation on the subkey bits depending on the j-th subblock. The method is finally characterised in that the conversion operation depending on the j-th subblock is a substitution operation carried out on the subkey according to the j-th subblock.
    • 本发明涉及电通信和计算机技术领域,更确切地说,涉及用于加密数字数据的密码方法和装置。 该方法包括以一组子密钥的形式形成加密密钥,将数据块分解成多个子块N≥2,并通过对子块和子密钥执行双轨迹操作来交替地转换子块。 该方法的特征在于,在对第i个子块和子密钥执行双轨道操作之前,在子密钥上执行取决于第j个子块的转换操作,其中j NOTEQUAL i。 该方法的特征还在于,根据第j个子块的转换操作是根据第j个子块的子密钥位的置换操作。 该方法的特征还在于,根据第j个子块的转换操作是对根据第j个子块的子密钥位的循环偏移操作。 该方法的特征在于,根据第j个子块的转换操作是根据第j个子块对子密钥执行的替换操作。
    • 6. 发明公开
    • METHOD FOR THE CRYPTOGRAPHIC CONVERSION OF L-BIT INPUT BLOCKS OF DIGITAL DATA INTO L-BIT OUTPUT BLOCKS
    • 一种用于加密变换的数字数据的L位输入块的成L位的输出块的方法
    • EP1043863A1
    • 2000-10-11
    • EP97951348.8
    • 1997-11-28
    • Moldovyan, Alexandr AndreevichMoldovyan, Nikolay AndreevichOtkytoe Aksionernoe Obschestvo " Moskovskaya Gorodskaya Telefonaya Set" GSP
    • Moldovyan, Alexandr AndreevichMoldovyan, Nikolay AndreevichOtkytoe Aksionernoe Obschestvo " Moskovskaya Gorodskaya Telefonaya Set" GSP
    • H04L9/08H04K1/06
    • H04L9/0618
    • The present invention relates to the field of electric communication and computer engineering, and more particularly, to the field of cryptographic methods and devices for ciphering digital data. The method comprises dividing a block of data into N≥ 2 subblocks, converting these subblocks one after another by generating at least one binary vector according to the subblock value and modifying the subblock using the binary vector. Novelty of the claimed method is in generating the binary vector at the subsequent step of sub-block conversion depending on the binary vector structure at the preceding step of subblock conversion. Novelty is also in generating two binary vectors and converting one of them by operation of cyclic-shift on a number of bits equal to the value of the second binary vector. Further, novelty is in modifying one of the subblocks by applying to it a cyclic shifting operation on a number of bits equal to the current value of the binary vector. Novelty is also in the use, in subblock conversion, a number T≥ 2 of stuffing tables, whereby the number (v) of the table is calculated on the basis of the binary vector, and the subblock is modified by a stuffing operation determined by the v-th table.
    • 本发明涉及电通信和计算机工程,更具体的领域中,以用于加密数字数据的加密的方法和设备的领域。 该方法包括将数据块分成n≧2子块,通过产生至少一种二元载体gemäß到子块值,并使用该二进制向量修改所述子块变换后另一合成子块之一。 要求保护的方法的新颖性在于在子块变换子块在转换的preceding-步骤上的二元载体结构因工程后续步骤产生的二元载体。 新颖之处在于在由此产生两个二元载体并在数量上等于所述第二二进制向量的值的位的转换它们中的一个通过循环移位的手术。 此外,新颖性在于在通过施加到其上的循环移位操作上的数等于所述二元载体的当前值的比特修改所述子块中的一个。 因此新颖性是在使用中,在子块的转换,一些T≥馅表2,由此所述数目(v)的表中的被二进制矢量的基础上计算的,并且子块由操作确定性由开采的填充改性 第v表。