Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/SHA-2> ?p ?o }
- SHA-2 abstract "SHA-2 (Secure Hash Algorithm 2) is a set of cryptographic hash functions designed by the NSA. SHA stands for Secure Hash Algorithm. Cryptographic hash functions are mathematical operations run on digital data; by comparing the computed \"hash\" (the output from execution of the algorithm) to a known and expected hash value, a person can determine the data's integrity. For example, computing the hash of a downloaded file and comparing the result to a previously published hash result can show whether the download has been modified or tampered with. A key aspect of cryptographic hash functions is their collision resistance: nobody should be able to find two different input values that result in the same hash output.SHA-2 includes significant changes from its predecessor, SHA-1. The SHA-2 family consists of six hash functions with digests (hash values) that are 224, 256, 384 or 512 bits: SHA-224, SHA-256, SHA-384, SHA-512, SHA-512/224, SHA-512/256.SHA-256 and SHA-512 are novel hash functions computed with 32-bit and 64-bit words, respectively. They use different shift amounts and additive constants, but their structures are otherwise virtually identical, differing only in the number of rounds. SHA-224 and SHA-384 are simply truncated versions of the first two, computed with different initial values. SHA-512/224 and SHA-512/256 are also truncated versions of SHA-512, but the initial values are generated using the method described in FIPS PUB 180-4. SHA-2 was published in 2001 by the NIST as a U.S. federal standard (FIPS). The SHA-2 family of algorithms are patented in US patent 6829355. The United States has released the patent under a royalty-free license.In 2005, an algorithm emerged for finding SHA-1 collisions in about 2,000-times fewer steps than was previously thought possible. Although (as of 2015) no example of a SHA-1 collision has been published yet, the security margin left by SHA-1 is weaker than intended, and its use is therefore no longer recommended for applications that depend on collision resistance, such as digital signatures. Although SHA-2 bears some similarity to the SHA-1 algorithm, these attacks have not been successfully extended to SHA-2.Currently, the best public attacks break preimage resistance for 52 rounds of SHA-256 or 57 rounds of SHA-512, and collision resistance for 46 rounds of SHA-256, as shown in the Cryptanalysis and validation section below.".
- SHA-2 thumbnail SHA-2.svg?width=300.
- SHA-2 wikiPageExternalLink secure_hashing.html.
- SHA-2 wikiPageExternalLink shaval.htm.
- SHA-2 wikiPageExternalLink fips-180-4.pdf.
- SHA-2 wikiPageExternalLink 03.
- SHA-2 wikiPageExternalLink index.html.
- SHA-2 wikiPageExternalLink shachecker.com.
- SHA-2 wikiPageExternalLink ?f=fips_sha_shs.info.txt.
- SHA-2 wikiPageExternalLink ?f=fips_sha_shs.standard.txt.
- SHA-2 wikiPageExternalLink sha256-384-512.pdf.
- SHA-2 wikiPageExternalLink index.html.
- SHA-2 wikiPageID "1638777".
- SHA-2 wikiPageLength "39613".
- SHA-2 wikiPageOutDegree "94".
- SHA-2 wikiPageRevisionID "707881855".
- SHA-2 wikiPageWikiLink Application-specific_integrated_circuit.
- SHA-2 wikiPageWikiLink Avalanche_effect.
- SHA-2 wikiPageWikiLink Biclique_attack.
- SHA-2 wikiPageWikiLink Birthday_attack.
- SHA-2 wikiPageWikiLink Bit.
- SHA-2 wikiPageWikiLink Bitcoin.
- SHA-2 wikiPageWikiLink Bitwise_operation.
- SHA-2 wikiPageWikiLink Brute-force_attack.
- SHA-2 wikiPageWikiLink CRYPTREC.
- SHA-2 wikiPageWikiLink Category:Articles_with_example_pseudocode.
- SHA-2 wikiPageWikiLink Category:Checksum_algorithms.
- SHA-2 wikiPageWikiLink Category:Cryptographic_hash_functions.
- SHA-2 wikiPageWikiLink Category:National_Security_Agency_cryptography.
- SHA-2 wikiPageWikiLink Collision_(computer_science).
- SHA-2 wikiPageWikiLink Collision_attack.
- SHA-2 wikiPageWikiLink Collision_resistance.
- SHA-2 wikiPageWikiLink Communications_Security_Establishment.
- SHA-2 wikiPageWikiLink Comparison_of_cryptographic_hash_functions.
- SHA-2 wikiPageWikiLink Cryptocurrency.
- SHA-2 wikiPageWikiLink Cryptographic_Module_Validation_Program.
- SHA-2 wikiPageWikiLink Cryptographic_hash_function.
- SHA-2 wikiPageWikiLink Debian.
- SHA-2 wikiPageWikiLink Differential_cryptanalysis.
- SHA-2 wikiPageWikiLink Digital_signature.
- SHA-2 wikiPageWikiLink DomainKeys_Identified_Mail.
- SHA-2 wikiPageWikiLink Domain_Name_System_Security_Extensions.
- SHA-2 wikiPageWikiLink Exclusive_or.
- SHA-2 wikiPageWikiLink Fast_Software_Encryption.
- SHA-2 wikiPageWikiLink Federal_Information_Processing_Standards.
- SHA-2 wikiPageWikiLink Federal_government_of_the_United_States.
- SHA-2 wikiPageWikiLink Google_Chrome.
- SHA-2 wikiPageWikiLink Hash-based_message_authentication_code.
- SHA-2 wikiPageWikiLink Hashcash.
- SHA-2 wikiPageWikiLink IPsec.
- SHA-2 wikiPageWikiLink International_Association_for_Cryptologic_Research.
- SHA-2 wikiPageWikiLink International_Criminal_Tribunal_for_Rwanda.
- SHA-2 wikiPageWikiLink Ivy_Bridge_(microarchitecture).
- SHA-2 wikiPageWikiLink MD5.
- SHA-2 wikiPageWikiLink Meet-in-the-middle_attack.
- SHA-2 wikiPageWikiLink Merkle–Damgård_construction.
- SHA-2 wikiPageWikiLink Modular_arithmetic.
- SHA-2 wikiPageWikiLink NESSIE.
- SHA-2 wikiPageWikiLink NIST_hash_function_competition.
- SHA-2 wikiPageWikiLink National_Institute_of_Standards_and_Technology.
- SHA-2 wikiPageWikiLink National_Security_Agency.
- SHA-2 wikiPageWikiLink One-way_compression_function.
- SHA-2 wikiPageWikiLink Passwd.
- SHA-2 wikiPageWikiLink Password_strength.
- SHA-2 wikiPageWikiLink Piledriver_(microarchitecture).
- SHA-2 wikiPageWikiLink Portable_Document_Format.
- SHA-2 wikiPageWikiLink Preimage_attack.
- SHA-2 wikiPageWikiLink Pretty_Good_Privacy.
- SHA-2 wikiPageWikiLink Proof-of-stake.
- SHA-2 wikiPageWikiLink Proof-of-work_system.
- SHA-2 wikiPageWikiLink Pseudocode.
- SHA-2 wikiPageWikiLink MIME.
- SHA-2 wikiPageWikiLink SHA-1.
- SHA-2 wikiPageWikiLink SHA-3.
- SHA-2 wikiPageWikiLink Scrypt.
- SHA-2 wikiPageWikiLink Secure_Hash_Algorithm.
- SHA-2 wikiPageWikiLink Secure_Hash_Standard.
- SHA-2 wikiPageWikiLink Secure_Shell.
- SHA-2 wikiPageWikiLink Selected_Areas_in_Cryptography.
- SHA-2 wikiPageWikiLink Sha1sum.
- SHA-2 wikiPageWikiLink Sony.
- SHA-2 wikiPageWikiLink The_quick_brown_fox_jumps_over_the_lazy_dog.
- SHA-2 wikiPageWikiLink Transport_Layer_Security.
- SHA-2 wikiPageWikiLink Triple_DES.
- SHA-2 wikiPageWikiLink Trusted_timestamping.
- SHA-2 wikiPageWikiLink United_States.
- SHA-2 wikiPageWikiLink University_of_Illinois_at_Chicago.
- SHA-2 wikiPageWikiLink X86.
- SHA-2 wikiPageWikiLink X86-64.
- SHA-2 wikiPageWikiLink File:SHA-2.svg.
- SHA-2 wikiPageWikiLinkText "SHA-2".
- SHA-2 wikiPageWikiLinkText "SHA-224".
- SHA-2 wikiPageWikiLinkText "SHA-224, SHA-256".
- SHA-2 wikiPageWikiLinkText "SHA-224, SHA-256, SHA-384, SHA-512".
- SHA-2 wikiPageWikiLinkText "SHA-256".
- SHA-2 wikiPageWikiLinkText "SHA-256, SHA-384, SHA-512".
- SHA-2 wikiPageWikiLinkText "SHA-256, SHA-384, SHA-512, SHA-224".
- SHA-2 wikiPageWikiLinkText "SHA-256d".
- SHA-2 wikiPageWikiLinkText "SHA-384".
- SHA-2 wikiPageWikiLinkText "SHA-384, SHA-512, SHA-512/224, SHA-512/256".