标准号：ISO/IEC 18033-4-2005
实施状态：作废
中文名称：信息技术.安全技术.加密算法.第4部分:序列密码
英文名称：Information technology - Security techniques - Encryption algorithms - Part 4: Stream ciphers
发布日期：2005-07
被替代标准：ISO/IEC 18033-4-2011
代替标准：ISO/IEC FDIS 18033-4-2005
采用标准：ANSI/INCITS/ISO/IEC 18033-4-2005,IDT;BS ISO/IEC 18033-4+A1-2005,IDT;CAN/CSA-ISO/IEC 18033-4-06-2006,IDT
起草单位：ISO/IEC JTC 1/SC 27
标准简介：This part of ISO/IEC 18033 specifies stream cipher algorithms. A stream cipher is an encryption mechanism that uses a keystream to encrypt a plaintext in bitwise or block-wise manner. There are two types of stream cipher: a synchronous stream cipher, in which the keystream is only generated from the secret key (and an initialization vector) and a self-synchronizing stream cipher, in which the keystream is generated from the secret key and some past ciphertexts (and an initialization vector). Typically the encryption operation is the additive bitwise XOR operation between a keystream and the message. This part of ISO/IEC 18033 describes both pseudorandom number generators for producing keystream, and output functions for stream ciphers.
The algorithms specified in this part of ISO/IEC 18033 have been assigned object identifiers in accordance with ISO/IEC 9834. The list of assigned object identifiers is given in Annex C. Any change to the specification of the algorithms resulting in a change of functional behaviour will result in a change of the object identifier assigned to the algorithm.
NOTE 1 - In applications where a combination of algorithms is being used, or when an algorithm is parameterized by the choice of a combination of other algorithms, the combination may be specified as a sequence of object identifiers. Alternatively, the object identifiers of lower layer algorithms may be included in the parameter field of the higher layer algorithm's identifier structure. For example, the object identifier of a block cipher could be included as a parameter in the algorithm identifier structure for a keystream generator. The algorithm identifier structure is defined in ISO/IEC 9594-8.
NOTE 2 - The encoding of object identifiers is application dependent.
文件格式：PDF
文件大小：2.17MB
文件页数：50
（以上信息更新时间为：2019-11-22）
ISO_IEC 18033-4-2005 信息技术.安全技术.加密算法.第4部分_序列密码.pdf
(2.17 MB)
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