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ISO/IEC 10118-4:1998

Ausgabedatum: 1998 12 20

Information technology — Security techniques — Hash-functions — Part 4: Hash-functions using modular arithmetic

This part of ISO/IEC 10118 specifies two hash-functions which make use of modular arithmetic. These hash-functions, which are believed to be collision-resistant, compress...
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Herausgeber:
International Organization for Standardization
Format:
Digital | 23 Seiten
Sprache:
Englisch
ICS
35.030
Fachgebiete
IT, communication & electronic, Applications of information technology, IT Security IT, communication & electronic, Information technology, IT Security Services & management, Company organization and management. Quality, IT Security

This part of ISO/IEC 10118 specifies two hash-functions which make use of modular arithmetic. These hash-functions,

which are believed to be collision-resistant, compress messages of arbitrary but limited length to a hash-code

whose length is determined by the length of the prime number used in the reduction-function defined in 7.3. Thus,

the hash-code is easily scaled to the input length of any mechanism (e.g., signature algorithm, identification

scheme).

The hash-functions specified in this part of ISO/IEC 10118, known as MASH-1 and MASH-2 (Modular Arithmetic

Secure Hash) are particularly suitable for environments in which implementations of modular arithmetic of sufficient

length are already available. The two hash-functions differ only in the exponent used in the round-function.