SHA256 Online Calculator

SHA256Calc.com - Free Online Hash Calculators

SHA256 hash calculator

Here you can calculate online SHA256 hashes for your strings. Put your string into form below and press "Calculate SHA256 hash". As a result you will get SHA256 hash of your string. If you need another hash calculators, for example: HAVAL224-3, MD2, SHA512 or SHA512-224 you can find it into appropriate section.


SHA256 hash for jessica string

e1fc45f7880e0505ff0b6a079b9af149f225e260f59b1d20225357a8cce8ffd8

Source string

jessica

About SHA-2 hash algorithms

SHA-2 (Secure Hash Algorithm 2) is a set of cryptographic hash functions designed by the United States National Security Agency (NSA). They are built using the Merkle–Damgård structure, from a one-way compression function itself built using the Davies–Meyer structure from a (classified) specialized block cipher.

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-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 SHA-256 and SHA-512 respectively, 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 Federal Information Processing Standards (FIPS) PUB 180-4. SHA-2 was published in 2001 by the National Institute of Standards and Technology (NIST) 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.

Currently, the best public attacks break preimage resistance for 52 out of 64 rounds of SHA-256 or 57 out of 80 rounds of SHA-512, and collision resistance for 46 out of 64 rounds of SHA-256.

SHA-256 and SHA-512, and, to a lesser degree, SHA-224 and SHA-384 are prone to length extension attacks, rendering it insecure for some applications. It is thus generally recommended to switch to SHA-3 for 512-bit hashes and to use SHA-512/224 and SHA-512/256 instead of SHA-224 and SHA-256. This also happens to be faster than SHA-224 and SHA-256 on x86-64 processor architecture, since SHA-512 works on 64-bit instead of 32-bit words.

© Wikipedia

Other Online Hash Calculators

MD2MD4MD5SHA1SHA224SHA384SHA512/224SHA512/256SHA512SHA3-224SHA3-256SHA3-384SHA3-512RIPEMD128RIPEMD160RIPEMD256RIPEMD320WHIRLPOOLTIGER128,3TIGER160,3TIGER192,3TIGER128,4TIGER160,4TIGER192,4SNEFRUSNEFRU256GOSTGOST-CRYPTOADLER32CRC32CRC32BFNV132FNV1A32FNV164FNV1A64JOAATHAVAL128,3HAVAL160,3HAVAL192,3HAVAL224,3HAVAL256,3HAVAL128,4HAVAL160,4HAVAL192,4HAVAL224,4HAVAL256,4HAVAL128,5HAVAL160,5HAVAL192,5HAVAL224,5HAVAL256,5

Top hashed strings

1234567 SHA3-256 hash, 123qwe TIGER128,3 hash, 1qaz2wsx SHA384 hash, 2000 TIGER128,3 hash, 777777 HAVAL128,4 hash, admin RIPEMD160 hash, asdfgh SHA3-256 hash, ashley HAVAL224,3 hash, baseball HAVAL224,4 hash, cookie HAVAL192,3 hash, cxz ADLER32 hash, football MD5 hash, golfer SNEFRU256 hash, jordan RIPEMD128 hash, martin SHA512/256 hash, monkey TIGER192,3 hash, nicole HAVAL256,3 hash, qwerty SHA3-512 hash, rangers ADLER32 hash, testtest TIGER128,4 hash, thunder JOAAT hash

About project

You've visit right place if you want to calculate SHA256 hashes. Put string or even text into String to encode field above and press "Calculate SHA256 hash". You will get SHA256 hash of your string in seconds. You can also copy this hash right to your clipboard using the appropriate button.

Keep in mind that our website has a lot of other calculators, like MD2, MD4, MD5, SHA1, SHA224, SHA384, SHA512-224, SHA512, RIPEMD128, RIPEMD160, RIPEMD256, RIPEMD320, WHIRLPOOL, SNEFRU, SNEFRU256, GOST, ADLER32, CRC32, CRC32B, FNV132, FNV1A32, FNV164, FNV1A64, JOAAT, etc. So all what you need to calculate any of these hashes is remeber our web site address - SHA256Calc.com