Results 71 to 80 of about 32,597 (206)

Analysis of the cryptographic strength of the SHA-256 hash function using the SAT approach

Научно-технический вестник информационных технологий, механики и оптики
Cryptographic hash functions play a significant role in modern information security systems by ensuring data integrity and enabling efficient data compression. One of the most important and widely used cryptographic hash functions is SHA-256 that belongs
V. V. Davydov, M. D. Pikhtovnikov, A. P. Kiryanova, O. S. Zaikin   +3 more
doaj   +1 more source

Current application of blockchain technology in healthcare and its potential roles in Urology

BJU International, EarlyView.
Objective To assess the current uses of blockchain technology in surgery and explore potential applications in urology. Methods A systematic literature review and critical appraisal was performed. The PubMed database was searched for all relevant papers published in English, between 2003 and 2023, on blockchain and surgery, and urology.
Sulleyman Felemban, Ting Wai Yiu, Michael Harvey, Herman Lim, Jingge Zhu, Damien Bolton, Joseph Ischia   +6 more
wiley   +1 more source

How to Formalize Loop Iterations in Cryptographic Protocols Using ProVerif

IEEE Access
The formal verification of cryptographic protocols has been extensively studied in recent years. To verify the cryptographic protocol security, formal verification tools consider protocol properties as interactive processes involving a cryptographic ...
Takehiko Mieno, Hiroyuki Okazaki, Kenichi Arai, Yuichi Futa   +3 more
doaj   +1 more source

The Myths of Blockchain Governance

Corporate Governance: An International Review, EarlyView.
ABSTRACT Research Question/Issue Blockchain technology promises to revolutionize governance through strong commitments, trustlessness, and transparency. This paper examines how these promises have failed to materialize in practice. Research Findings/Insights Drawing on case evidence from major blockchains, including Bitcoin and Ethereum, I argue that ...
Daniel Ferreira
wiley   +1 more source

Asymmetric cryptography and practical security

Journal of Telecommunications and Information Technology, 2002
Since the appearance of public-key cryptography in Diffie-Hellman seminal paper, many schemes have been proposed, but many have been broken. Indeed, for many people, the simple fact that a cryptographic algorithm withstands cryptanalytic attacks for ...
David Pointcheval
doaj   +1 more source

An Economic Analysis of Difficulty Adjustment Algorithms in Proof‐of‐Work Blockchain Systems

International Economic Review, EarlyView.
ABSTRACT We study the stability of cryptocurrency systems through difficulty adjustment. Bitcoin's difficulty adjustment algorithm (DAA) exhibits instability when the reward elasticity of the hash rate is high, implying that a sharp price reduction could disrupt the current Bitcoin system.
Shunya Noda, Kyohei Okumura, Yoshinori Hashimoto   +2 more
wiley   +1 more source

Comparative Study of Blockchain Hashing Algorithms with a Proposal for HashLEA

Applied Sciences
Blockchain has several unique features: data integrity, security, privacy, and immutability. For this reason, it is considered one of the most promising new technologies for a wide range of applications.
Abdullah Sevin, Abdu Ahmed Osman Mohammed   +1 more
doaj   +1 more source

A Novel Improvement With an Effective Expansion to Enhance the MD5 Hash Function for Verification of a Secure E-Document

IEEE Access, 2020
MD5 is a one-way cryptographic function used in various fields for maintaining data integrity. The application of a Hash function can provide much protection and privacy and subsequently reduce data usage.
Ammar Mohammed Ali, Alaa Kadhim Farhan
doaj   +1 more source

From rights to runtime: Privacy engineering for agentic AI

AI Magazine, Volume 46, Issue 4, Winter 2025.
Abstract Agentic AI shifts stacks from request‐response to plan‐execute. Systems no longer just answer; they act—planning tasks, calling tools, keeping memory, and changing external state. That shift moves privacy from policy docs into the runtime.
Keivan Navaie
wiley   +1 more source

Measuring Crypto Literacy

Journal of Consumer Affairs, Volume 59, Issue 4, Winter 2025.
ABSTRACT We present the construction and validation of a scale for measuring cryptocurrency knowledge. As users continue to adopt digital currencies and government agencies introduce more regulatory legislation, researchers need to understand the general public's degree of literacy in this area.
Michael Jones, Truong Luu, Binny M. Samuel   +2 more
wiley   +1 more source