In this paper a high-speed cryptographic co-processor, named HSSec, is presented. The core embeds two hash functions, SHA-1 and SHA-512, and the symmetric block cipher AES. The architecture of HSSec renders it suitable for widely spread applications with security demands. The presented co-processor can be used inevery system integrating standards such as IPSec or the upcoming JPSec and P1619. T...

Blue Midnight Wish hash function is one of 14 candidate functions that are continuing in the Second Round of the SHA-3 competition. In its design it has several S-boxes (bijective components) that transform 32-bit or 64-bit values. Although they look similar to the S-boxes in SHA-2, they are also different. It is well known fact that the design principles of SHA-2 family of hash functions are s...

SHA-3 (Secure hash algorithm-3), originally known as Keccak is a cryptographic hash function selected as the winner of the NIST hash function competition. Hash functions have many applications in cryptography mainly in digital signatures and message authentication codes and in network security. Implementation of the main building block (compression function) for five different SHA-3 candidates ...

In 1992, NIST announced a proposed standard for a collision-free hash function. The algorithm for producing the hash value is known as the Secure Hash Algorithm (SHA), and the standard using the algorithm in known as the Secure Hash Standard (SHS). Later, an announcement was made that a scientist at NSA had discovered a weakness in the original algorithm. A revision to this standard was then an...

paper describes the results of an extensive study and comparison of popular hash functions SHA-1, SHA-256, RIPEMD-160 and RIPEMD-320 with JERIM-320, a 320-bit hash function. The compression functions of hash functions like SHA-1 and SHA-256 are designed using serial successive iteration whereas those like RIPEMD-160 and RIPEMD-320 are designed using two parallel lines of message processing. JER...

This paper describes the results of an extensive study and comparison of popular hash functions SHA-1, SHA-256, RIPEMD-160 and RIPEMD-320 with JERIM-320, a 320-bit hash function. The compression functions of hash functions like SHA-1 and SHA-256 are designed using serial successive iteration whereas those like RIPEMD-160 and RIPEMD-320 are designed using two parallel lines of message processing...

This paper shows an extensive software performance analysis of dedicated hash functions, particularly concentrating on Pentium III, which is a current dominant processor. The targeted hash functions are MD5, RIPEMD-128 -160, SHA-1 -256 -512 and Whirlpool, which fully cover currently used and future promising hashing algorithms. We try to optimize hashing speed not only by carefully arranging pi...

As a result of extensive analyses on cryptographic hash functions, NIST started an open competition for selecting a new standard hash function SHA-3. One important aspect of this competition is in evaluating hardware implementations and in collecting much attention of researchers in this area. For a fair comparison of the hardware performance, we propose an evaluation platform, a hardware desig...

In this paper, we examine the resistance of the popular hash function SHA-1 and its predecessor SHA-0 against dedicated preimage attacks. In order to assess the security margin of these hash functions against these attacks, two new cryptanalytic techniques are developed: – Reversing the inversion problem: the idea is to start with an impossible expanded message that would lead to the required d...

Hash functions are among the most widespread cryptographic primitives, and are currently used in multiple cryptographic schemes and security protocols such as IPSec and SSL. In this paper, we compare and contrast hardware implementations of the newly proposed draft hash standard SHA-512, and the old standard, SHA-1. In our implementation based on Xilinx Virtex FPGAs, the throughput of SHA-512 i...