Results 191 to 200 of about 37,099 (235)

Keyed/Unkeyed SHA-2

Journal of Discrete Mathematical Sciences and Cryptography, 2003
Abstract In FIPS 180–2, NIST published SHA-2 as a new version of secure hash algorithm. SHA-2 offers four secure hash algorithms including SHA-1, SHA-256, SHA-384, and SHA-512. In other words, SHA-2 may have outputs 160, 256, 384, or 512 bits of message digest. However, SHA-2 algorithm uses fixed and predefined parameters in execution.
Chu-Hsing Lin, Yi-Shiung Yeh, Chen-Yu Lee   +2 more
exaly   +2 more sources

In-memory realization of SHA-2 using ReVAMP architecture

2021 34th International Conference on VLSI Design and 2021 20th International Conference on Embedded Systems (VLSID), 2021
Emerging non-volatile memory (NVM) technologies with computation capabilities have heralded a new era of non- Von Neumann computing models. Redox-based Resistive RAM (ReRAM) is a prominent NVM technology, which offers high density, low leakage power and ability to perform functionally complete set of Boolean operations.
Debjyoti Bhattacharjee, Anirban Majumder, Anupam Chattopadhyay   +2 more
openaire   +1 more source

Keccak und der SHA-2

Datenschutz und Datensicherheit - DuD, 2013
Wie beim DES-Nachfolger AES schrieb das US-amerikanische NIST 2007 einen offentlichen Wettbewerb um die Nachfolge des Hashverfahrens SHA-2 aus. Im Oktober 2012 fiel die Wahl auf Keccak. Die Autoren stellen den Hashalgorithmus vor, beschreiben eine Smartcard-Implementierung und stellen das Verfahren dem „amtierenden“ SHA-2-Standard gegenuber.
Pawel Swierczynski, Gregor Leander, Christof Paar   +2 more
openaire   +1 more source

A New Message Expansion Structure for Full Pipeline SHA-2

IEEE Transactions on Circuits and Systems I: Regular Papers, 2021
Once there are constant or infrequently changed bits (COIBs) in two adjacent input messages of SHA-2, the switching power of input messages data registers (IMD-REGs) used for COIBs will disappear. Meanwhile, when full pipeline SHA-2 is applied in a certain application scenario where the IMD-REGs used for COIBs can be removed, more area of full pipeline
Yin Zhang, Zhangqing He, Meilin Wan, Muwen Zhan, Ming Zhang, Kuang Peng, Min Song, Haoshuang Gu   +7 more
openaire   +1 more source

SHA-2 hardware core for virtex-5 FPGA

2015 IEEE 12th International Multi-Conference on Systems, Signals & Devices (SSD15), 2015
Hash functions play an important role in modern cryptography. They are widely used to provide services of data integrity and authentication. The hash algorithms are based on performing a number of complex operations on the input data that require a significant amount of computing resources especially when the input data are huge.
Mohamed Anane, Nadjia Anane
openaire   +1 more source

Optimisation of the SHA-2 Family of Hash Functions on FPGAs

IEEE Computer Society Annual Symposium on Emerging VLSI Technologies and Architectures (ISVLSI'06), 2006
Hash functions play an important role in modern cryptography. This paper investigates optimisation techniques that have recently been proposed in the literature. A new VLSI architecture for the SHA-256 and SHA-512 hash functions is presented, which combines two popular hardware optimisation techniques, namely pipelining and unrolling.
Robert P. McEvoy, Francis M. Crowe, Colin C. Murphy, William P. Marnane   +3 more
openaire   +1 more source

Memory optimization of HMAC/SHA-2 encryption

2014 First International Conference on Computational Systems and Communications (ICCSC), 2014
Society is undergoing a paradigm shift where the Information and Communication Technology revolution goes along with the evolution of the humankind The Internet is all around us and plays a crucial role in our ability to communicate We often distribute our personal and other classified information using the benefits of the global network Our demands to
R S Rubayya, R Resmi
openaire   +1 more source

Implementation of the SHA-2 Hash Family Standard Using FPGAs

The Journal of Supercomputing, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Nicolas Sklavos 0001, Odysseas G. Koufopavlou   +1 more
openaire   +2 more sources

New Local Collisions for the SHA-2 Hash Family

2007
The starting point for collision attacks on practical hash functions is a local collision. In this paper, we make a systematic study of local collisions for the SHA-2 family. The possible linear approximations of the constituent Boolean functions are considered and certain impossible conditions for such approximations are identified.
Somitra Kumar Sanadhya, Palash Sarkar 0001   +1 more
openaire   +2 more sources

Avoiding Data Replication in Cloud Using SHA-2

2018 Internat2018 International Conference on Computation of Power, Energy, Information and Communication (ICCPEIC)ional conference on computation of power, energy, Information and Communication (ICCPEIC), 2018
Duplication occurs in cloud when two or more users try to upload same data who are working under a same organization. Deduplication is a process of avoiding the redundant data from the cloud. In previous systems they have used MD5 algorithm, which avoids performs on both file and content level de-duplication check.
R. Raju, S. Aravind Kumar, R. Manikandan
openaire   +1 more source