Replacing SHA-2 with SHA-3 Enhances Generic Security of HMAC
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منابع مشابه
General Distinguishing Attacks on NMAC and HMAC with Birthday Attack Complexity
Kim et al. [4] and Contini et al. [3] studied on the security of HMAC and NMAC based on HAVAL, MD4, MD5, SHA-0 and SHA-1. Especially, they considered the distinguishing attacks. However, they did not describe generic distinguishing attacks on NMAC and HMAC. In this paper, we describe the generic distinguishers to distinguish NMAC and HMAC with the birthday attack complexity and we prove the sec...
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In this note we show a consequence of the recent observation that narrow-pipe hash designs manifest an abberation from ideal random functions for finding collisions for those functions with complexities much lower than the so called generic birthday paradox lower bound. The problem is generic for narrow-pipe designs including classic Merkle-Damg̊ard designs but also recent narrow-pipe SHA-3 cand...
متن کاملOn the Security of HMAC and NMAC Based on HAVAL, MD4, MD5, SHA-0 and SHA-1⋆
HMAC is a widely used message authentication code and a pseudorandom function generator based on cryptographic hash functions such as MD5 and SHA-1. It has been standardized by ANSI, IETF, ISO and NIST. HMAC is proved to be secure as long as the compression function of the underlying hash function is a pseudorandom function. In this paper we devise two new distinguishers of the structure of HMA...
متن کاملFPGA Implementation of an HMAC Processor based on the SHA-2 Family of Hash Functions
The utilization of hash functions and Keyed-Hash Message Authentication Codes (HMAC) are of utmost importance to ensure data integrity and data origin authentication in digital communications. Until recently, protocols used in the Internet, such as the Internet Key Exchange (IKE), Internet Protocol Security (IPSec) and Transport Layer Security (TLS), employed HMAC in conjunction with MD5 and SH...
متن کاملOn the Security of HMAC and NMAC Based on HAVAL, MD4, MD5, SHA-0 and SHA-1 (Extended Abstract)
HMAC is a widely used message authentication code and a pseudorandom function generator based on cryptographic hash functions such as MD5 and SHA-1. It has been standardized by ANSI, IETF, ISO and NIST. HMAC is proved to be secure as long as the compression function of the underlying hash function is a pseudorandom function. In this paper we devise two new distinguishers of the structure of HMA...
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تاریخ انتشار 2016