标准号：ISO/IEC 9797-2-2002
实施状态：作废
中文名称：信息技术.安全技术.电文鉴别代码(MACS).第2部分:专用散列函数的机械结构
英文名称：Information technology - Security techniques - Message Authentication Codes (MACs) - Part 2: Mechanisms using a dedicated hash-function
发布日期：2002-06
被替代标准：ISO/IEC 9797-2-2011
代替标准：ISO/IEC 9797-1994;ISO/IEC FDIS 9797-2-2001
采用标准：ANSI/INCITS/ISO/IEC 9797-2-2002,IDT;BS ISO/IEC 9797-2-2002,IDT;JIS X 5055-2-2003,IDT;JIS X 5055-2-2003,IDT;CAN/CSA-ISO/IEC 9797-2-04-2004,IDT
起草单位：ISO/IEC JTC 1
标准简介：This part of ISO/IEC 9797 specifies three MAC algo-rithms that use a secret key and a hash-function (or its round-function) with an n-bit result to calculate an m-bit MAC. These mechanisms can be used as data integrity mechanisms to verify that data has not been altered in an unauthorised manner. They can also be used as message authentication mechanisms to provide assurance that a message has been originated by an en-tity in possession of the secret key. The strength of the data integrity mechanism and message authentication mechanism is dependent on the length (in bits) k and secrecy of the key, on the length (in bits) n of a hash-code produced by the hash-function, on the strength of the hash-function, on the length (in bits) m of the MAC, and on the specific mechanism.
The three mechanisms specified in this part of ISO/IEC 9797 are based on the dedicated hash-functions specified in ISO/IEC 10118-3. The first mech-anism specified in this part of ISO/IEC 9797 is com-monly known as MDx-MAC. It calls the complete hash-function once, but it makes a small modification to the round-function by adding a key to the additive constants in the round-function. The second mechanism specified in this part of ISO/IEC 9797 is commonly known as HMAC. It calls the complete hash-function twice. The third mechanism specified in this part of ISO/IEC 9797 is a variant of MDx-MAC that takes as input only short strings (at most 256 bits). It offers a higher performance for applications that work with short input strings only.
This part of ISO/IEC 9797 can be applied to the se-curity services of any security architecture, process, or application.
文件格式：PDF
文件大小：353.02KB
文件页数：22
（以上信息更新时间为：2019-11-23）
ISO_IEC 9797-2-2002 信息技术.安全技术.电文鉴别代码(MACS).第2部分_专用散列函数的机械结构.pdf
(353.02 KB)
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