SHA


Also found in: Dictionary, Medical, Acronyms, Wikipedia.

SHA

SHA

(Secure Hash Algorithm) A family of popular cryptographic hash algorithms used to create digital signatures. The 160-bit SHA was developed by the National Institute of Standards & Technology (NIST) in 1993, and SHA-1 was the first revision in 1994. SHA-1 is similar to the MD4 and MD5 algorithms developed by Rivest, but is slightly slower and more secure. See MD5.

SHA-2 and SHA-3
Released in 2001, the stronger SHA-2 version superseded SHA-1. Because computers are increasingly more powerful, the stronger algorithm is encouraged by certificate authorities (CAs) to prevent an attacker from impersonating a CA. SHA-256 and SHA-512 are SHA-2 algorithms using hash lengths of 256 and 512 bits respectively, and SHA-224 and SHA-384 are truncated versions.

SHA-3 was released by NIST in 2015, which supports the same hash lengths as SHA-2 but uses a different cryptographic method based on the Keccak algorithm. SHA-3 was the result of a NIST competition for a new hash standard that began in 2006 and ended in 2012. See cryptographic hash function and digital signature.
References in periodicals archive ?
The route will start at Yuen Wo Road (near Sha Tin Sports Ground), proceeding to Sha Tin Rural Committee Road, Tai Chung Kiu Road, Fo Tan Road, Yuen Wo Road and finishing at Sha Tin Sports Ground.
The SHAs will now recommend to the Department of Health that four primary care trusts are established covering North of Tyne and Northumberland, South of Tyne and Sunderland, County Durham and Darlington and Teesside.
The synergies and shared goals between Evoteq and the SHA are self-evident," said H.
The bus termini at the Star Ferry Pier, the China Ferry Terminal, Canton Road and Jordan (To Wah Road) will be suspended until 11am, while Tsim Sha Tsui East (Mody Road) Bus Terminus will be suspended from 11am to 6pm.
According to the letter the new members to represent in SHA are; Dr Syed Junaid Ali Shah, Hayder Hussain,Javid Iqbal, Abdul Azeem Khan, Dr S.
Inashi kwatha sha molwashoka iikando oyindji ofoloko onda li tandi yi tsu ashike moshiyaha itayi tsu sha.
The 93 suites in Sha are not about four walls, fluffy duvets, sheer curtains and a fancy coffee machine.
amp; Master Zhi Gang Sha will conduct a Free Soul Healing evening in Mumbai on January 12, 2012, and a Self-Healing & Rejuvenation Retreat on January 13-15, 2012, for the first-time ever as part of the New Year initiative by Soul Healing India - Serving all Humanity.
Each cluster will have a joint executive team and a single shared board of directors with staff continuing to work out of all current SHA offices during the transition.
With RADWIN links, SHA can provide high-capacity connectivity to the edge sites and support a range of applications, including data transfer, security applications, building controls, video and security.
During his stay, Sha sets to visit his counterparts from equipment makers Zyxel Communications Corp.