Results 151 to 160 of about 3,529 (191)
Brute-force attack mitigation on remote access services via software-defined perimeter. [PDF]
Sci RepRuambo FA +6 more
europepmc +1 more source
Design of AFDM Waveform Encryption for LEO Satellite Networks. [PDF]
Sensors (Basel)Yuan M, Lin H, Ma C, Ma P, Yu M, Tang X.
europepmc +1 more source
A novel analysis methodology for assessment of re-identification risks for the National Cancer Institute cancer registry privacy preserving record linkage technique. [PDF]
J Am Med Inform AssocKantarcioglu M +7 more
europepmc +1 more source
Generic Related-Key Attacks for HMAC [PDF]
Lecture Notes in Computer Science, 2012 In this article we describe new generic distinguishing and forgery attacks in the related-key scenario (using only a single related-key) for the HMAC construction. When HMAC uses a k-bit key, outputs an n-bit MAC, and is instantiated with an l-bit inner iterative hash function processing m-bit message blocks where m=k, our distinguishing-R attack ...
Thomas Peyrin
exaly +3 more sources
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2006 International Conference on Dependability of Computer Systems, 2006
In this paper we want to enhance the powerful of HMAC function (Key-Hashed Message Authentication) to be more resistant against the Exhaustive search attack and Birthday Attack by inventing d-HMAC function (dynamic HMAC function). To achieve our purpose we use dynamic values of ipad and opad.
Mohannad Najjar, Firas Najjar
openaire +1 more source
In this paper we want to enhance the powerful of HMAC function (Key-Hashed Message Authentication) to be more resistant against the Exhaustive search attack and Birthday Attack by inventing d-HMAC function (dynamic HMAC function). To achieve our purpose we use dynamic values of ipad and opad.
Mohannad Najjar, Firas Najjar
openaire +1 more source
The Exact PRF-Security of NMAC and HMAC [PDF]
Lecture Notes in Computer Science, 2014 NMAC is a mode of operation which turns a fixed input-length keyed hash function f into a variable input-length function. A practical single-key variant of NMAC called HMAC is a very popular and widely deployed message authentication code (MAC). Security proofs and attacks for NMAC can typically be lifted to HMAC.
Krzysztof Pietrzak +2 more
exaly +4 more sources
Cryptanalysis on HMAC/NMAC-MD5 and MD5-MAC [PDF]
Lecture Notes in Computer Science, 2009 In this paper, we present the first distinguishing attack on HMAC and NMAC based on MD5 without related keys, which distinguishes the HMAC/NMAC-MD5 from HMAC/NMAC with a random function. The attack needs 297 queries, with a success probability 0.87, while the previous distinguishing attack on HMAC-MD5 reduced to 33 rounds takes 2126.1 messages with a ...
Hongbo Yu, Xiaoyun Wang, Tao Zhan
exaly +3 more sources
Equivalent Key Recovery Attacks Against HMAC and NMAC With Whirlpool Reduced to 7 Rounds [PDF]
Lecture Notes in Computer Science, 2015 A main contribution of this paper is an improved analysis against HMAC instantiating with reduced Whirlpool. It recovers equivalent keys, which are often denoted as Kin and Kout, of HMAC with 7-round Whirlpool, while the previous best attack can work ...
Jian Guo, Meiqin Wang, Long Wen
exaly +2 more sources
Updates on Generic Attacks Against HMAC and NMAC [PDF]
Lecture Notes in Computer Science, 2014 In this paper, we present new generic attacks against HMAC and other similar MACs when instantiated with an n-bit output hash function maintaining a l-bit internal state. Firstly, we describe two types of selective forgery attacks (a forgery for which the adversary commits on the forged message beforehand).
Jian Guo, Thomas Peyrin
exaly +3 more sources
Full Key-Recovery Attacks on HMAC/NMAC-MD4 and NMAC-MD5
Lecture Notes in Computer Science, 2007 At Crypto ’06, Bellare presented new security proofs for HMAC and NMAC, under the assumption that the underlying compression function is a pseudo-random function family.
Gaëtan Leurent, Pierre-Alain Fouque
exaly +2 more sources