Results 71 to 80 of about 3,754 (180)

Searching for Messages Conforming to Arbitrary Sets of Conditions in SHA-256

, 2009
Recent progress in hash functions analysis has led to collisions on reduced versions of SHA-256. As in other hash functions, differential collision search methods of SHA-256 can be described by means of conditions on and between state and message bits.
Marko Hölbl, Christian Rechberger, Tatjana Welzer   +2 more
openaire   +3 more sources

A novel medical steganography technique based on Adversarial Neural Cryptography and digital signature using least significant bit replacement

International Journal of Cognitive Computing in Engineering
With recent advances in technology protecting sensitive healthcare data is challenging. Particularly, one of the most serious issues with medical information security is protecting of medical content, such as the privacy of patients.
Mohamed Abdel Hameed, M. Hassaballah, Riem Abdelazim, Aditya Kumar Sahu   +3 more
doaj   +1 more source

Instruction sequence expressions for the secure hash algorithm SHA-256

CoRR, 2013
The secure hash function SHA-256 is a function on bit strings. This means that its restriction to the bit strings of any given length can be computed by a finite instruction sequence that contains only instructions to set and get the content of Boolean registers, forward jump instructions, and a termination instruction.
Bergstra, J.A., Middelburg, C.A.
openaire   +4 more sources

수론학 SHA-256 Hash

"This upload contains the SHA-256 cryptographic hash of the original research manuscript titled '[수론학]' to establish proof of existence and academic priority while maintaining strict confidentiality. The full manuscript will be disclosed upon formal publication/review."
openaire   +2 more sources

MicroCrypt: High-Efficiency Hashing for Next-Generation IoT Devices

Proceedings of the International Conference on Applied Innovations in IT
The Internet of Things (IoT) is growing quickly and connecting more devices than ever before. This has made it more important to improve security protocols, especially cryptographic hash functions that work in places with limited computing, storage, and ...
Shatha H. Jafer Al-Khalisy, Wafaa M. Salih Abedi, Adil M. Salman, Ghada Emad Al-Kateb, Mohammed Aljanabi, Maad M. Mijwil   +5 more
doaj   +1 more source

Perbandingan Algoritma AES128 dengan SHA256 dalam Kecepatan Enkripsi Pengiriman Data

JOINS (Journal of Information System)
Internet of Things bekerja untuk menyediakan berbagai layanan yang menghubungkan sensor dengan aktuator. Pada masa sekarang, layanan IoT telah banyak digunakan diberbagai bidang.
Rina Setiani, Eldiva Tegar Imananda, Wahyu Enggar Wicaksono, Muhammad Aziz Baihaqi, Jeki Kuswanto   +4 more
doaj   +1 more source

Skyscraper: Fast Hashing on Big Primes

Transactions on Cryptographic Hardware and Embedded Systems
Arithmetic hash functions defined over prime fields have been actively developed and used in verifiable computation (VC) protocols. Among those, ellipticcurve- based SNARKs require large (256-bit and higher) primes. Such hash functions are notably slow,
Clémence Bouvier, Lorenzo Grassi, Dmitry Khovratovich, Katharina Koschatko, Christian Rechberger, Fabian Schmid, Markus Schofnegger   +6 more
doaj   +1 more source

Reversing Eight Rounds of SHA-256

This paper demonstrates a method to deterministically reverse the first eight rounds (iterations) of the SHA-256 compression function. By tracking the propagation of a single message schedule word through the internal state and expressing its effect algebraically across rounds, we isolate and recover its original value from the final state. The results
openaire   +3 more sources

Efficiency Without Security Trade-off: Statistically Validated Cryptographic Hash Selection for Ethereum Fraud Detection

Journal of Applied Informatics and Computing
Cryptographic hash functions form the preprocessing layer of Ethereum fraud detection pipelines, yet prior research evaluated hash performance and fraud detection as separate concerns, leaving practitioners without evidence-based guidance for selecting ...
Ahmad Dani, Wildanil Ghozi, Ramadhan Rakhmat Sani, Fauzi Adi Rafrastara   +3 more
doaj   +1 more source

Semantically conditioned hyperchaotic encryption for medical images: U-Net and SHA-256 key binding against chosen plaintext attacks

Cybersecurity
Existing hyperchaotic medical image encryption schemes derive all chaotic initial conditions solely from statistical features of deep-learning-segmented anatomical regions, creating a structural chosen-plaintext-attack (CPA) vulnerability: images with ...
Imane Arioua, Said Hraoui, Hakim El Fadili   +2 more
doaj   +1 more source