New Proofs for NMAC and HMAC: Security Without Collision-Resistance

HMAC was proved in [3] to be a PRF assuming that (1) the underlying compression function is a PRF, and (2) the iterated hash function is weakly collision-resistant. However, recent attacks show that assumption (2) is false for MD5 and SHA-1, removing the proof-based support for HMAC in these cases....

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Bibliographische Detailangaben
1. Verfasser:	Bellare, Mihir
Format:	Buchkapitel
Sprache:	eng
Schlagworte:	Applied sciences Compression Function Computer science control theory systems Cryptographic Hash Function Cryptography Exact sciences and technology Hash Function Information, signal and communications theory Memory and file management (including protection and security) Memory organisation. Data processing Message Authentication Code Security Proof Signal and communications theory Software Telecommunications and information theory
Online-Zugang:	Volltext
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