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A chosen-prefix collision attack is a stronger variant of a collision attack, where an arbitrary pair of challenge prefixes are turned into a collision. Chosen-prefix collisions are usually significan...
We study instantiating the random permutation of the block-cipher mode of operation IAPM (Integrity-Aware Parallelizable Mode) with the public random permutation of Keccak, on which the draft standard...
PBKDF2 [27] is a well-known password-based key derivation function. In order to slow attackers down, PBKDF2 introduces CPU-intensive operations based on an iterated pseudorandom function (in our case ...
Keccak-based algorithms such as Secure Hash Algorithm-3 (SHA-3) will be widely used in crypto systems, and evaluating their security against different kinds of attacks is vitally important. This paper...
SHA-1 is a widely used 1995 NIST cryptographic hash function standard that was officially deprecated by NIST in 2011 due to fundamental security weaknesses demonstrated in various analyses and theoret...
Counter-cryptanalysis, the concept of using cryptanalytic techniques to detect cryptanalytic attacks, was first introduced by Stevens at CRYPTO 2013 with a hash collision detection algorithm. That is,...
This paper presents an efficient algebraic fault analysis on all four modes of SHA-3 under relaxed fault models. This is the first work to apply algebraic techniques on fault analysis of SHA-3. Result...
We investigate the cost of Grover's quantum search algorithm when used in the context of pre-image attacks on the SHA-2 and SHA-3 families of hash functions. Our cost model assumes that the attack is ...
Discussions are currently underway about the choice of a tree hash mode of operation for a standardization. It appears that a single tree mode cannot address the specificities of all possible uses a...
In 2012, NIST standardized SHA-512/224 and SHA-512/256, two truncated variants of SHA-512, in FIPS 180-4. These two hash functions are faster than SHA-224 and SHA-256 on 64-bit platforms, while mainta...
The j-lanes tree hashing is a tree mode that splits an input message to j slices, computes j independent digests of each slice, and outputs the hash value of their concatenation. The j-pointers tree...
In recent years, studies about the SATisfiability Problem (short for SAT) were more and more numerous because of its conceptual simplicity and ability to express a large set of various problems. Wit...
In this work, we present practical semi-free-start collisions for SHA-512 on up to 38 (out of 80) steps with complexity 240.5 . The best previously published result was on 24 steps. The attack is b...
We present collisions for a version of SHA-1 with modified constants, where the colliding payloads are valid binary files. Examples are given of colliding executables, archives, and images. Our mali...
SHA-2 (SHA-224, SHA-256, SHA-384 and SHA-512) is hash function family issued by the National Institute of Standards and Technology (NIST) in 2002 and is widely used all over the world. In this work,...

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