Preimage Attacks on 41-Step SHA-256 and 46-Step SHA-512 [PDF]
, 2009 In this paper, we propose preimage attacks on 41-step SHA-256 and 46-step SHA-512, which drastically increase the number of attacked steps compared to the best previous preimage attack working for only 24 steps. The time complexity for 41-step SHA-256 is
Kazumaro Aoki, Yu Sasaki, Lei Wang
core
New Records in Collision Attacks on RIPEMD-160 and SHA-256 [PDF]
, 2023 RIPEMD-160 and SHA-256 are two hash functions used to generate the bitcoin address. In particular, RIPEMD-160 is an ISO/IEC standard and SHA-256 has been widely used in the world.
Fukang Liu, Yingxin Li, Gaoli Wang
core
Blockchain Security Using Confidentiality, Integrity, and Availability for Secure Communication
BlockchainsBackground: Blockchain technology has emerged as a transformative communication solution for securing distributed systems. However, several vulnerabilities exist during transactions, including latency and network congestion issues during mempool ...
Chukwuebuka Francis Ikenga-Metuh +1 more
doaj +1 more source
A Blockchain‐Less Traceability System for Agriculture Using DAG, IPFS, and Serverless Deployments
International Journal of Network Management, Volume 36, Issue 3, May/June 2026.ABSTRACT Ensuring transparency and integrity in agricultural data management is a critical challenge as the sector increasingly relies on advanced technologies. The primary problem is maintaining data traceability and security throughout the supply chain.
Antonio Villafranca +6 more
wiley +1 more source
Analysis of SHA-512/224 and SHA-512/256 [PDF]
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 maintaining the same hash size and claimed security level ...
Florian Mendel +2 more
core
Design & Characterization of SHA 3- 256 Bit IP Core
, 2016 In the era of internet and computer networking the need for security have increased rapidly. Various crypto algorithms are used for secured data transmission and reception through the network, of which hash function possess a key role in various ...
James, Jeethu +2 more
core +1 more source
Simulation-Based Power Estimation for High Throughput SHA-256 Design on Unfolding Transformation [PDF]
, 2022 In recent years, security has grown in importance as a research topic. Several cryptographic SHA-256 hash algorithms have been developed to enhance the performance of data-protection techniques.
Shamsiah, Suhaili +4 more
core
A Multiple-Medical-Image Encryption Method Based on SHA-256 and DNA Encoding. [PDF]
Entropy (Basel), 2023 Wu J, Zhang J, Liu D, Wang X.
europepmc +1 more source
Improved homomorphic evaluation for hash function based on TFHE
CybersecurityHomomorphic evaluation of hash functions offers a solution to the challenge of data integrity authentication in the context of homomorphic encryption. The earliest attempt to achieve homomorphic evaluation of SHA-256 hash function was proposed by Mella ...
Benqiang Wei, Xianhui Lu
doaj +1 more source
Relaxation of Strict Avalanche Criterion on All SHA-256 Sub-Function Combinations
CryptographyA cryptographic hash function should dissipate patterns, such that highly related inputs are transformed into unrelated outputs. This property, known as diffusion, has been effectively measured on SHA-256 via the Strict Avalanche Criterion (SAC ...
Riley Vaughn, Mike Borowczak
doaj +1 more source