Tool to decrypt/encrypt SHA-256. The SHA-256 hash is the US federal standard that matches a 64-character fingerprint to an original binary data.

SHA-256 - dCode

Tag(s) : Modern Cryptography, Informatics

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Tool to decrypt/encrypt SHA-256. The SHA-256 hash is the US federal standard that matches a 64-character fingerprint to an original binary data.

SHA256 encryption calculates a 256-bit numeric fingerprint - 64 hexadecimal characters. The algorithm uses non-linear functions such as:

$$ \operatorname{Ch}(E,F,G) = (E \and F) \oplus (\neg E \and G) $$

$$ \operatorname{Ma}(A,B,C) = (A \and B) \oplus (A \and C) \oplus (B \and C) $$

$$ \Sigma_0(A) = (A\!\ggg\!2) \oplus (A\!\ggg\!13) \oplus (A\!\ggg\!22) $$

$$ \Sigma_1(E) = (E\!\ggg\!6) \oplus (E\!\ggg\!11) \oplus (E\!\ggg\!25) $$

and also 64 constants: 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2

Example: dCode has for hash 254cd63ece8595b5c503783d596803f1552e0733d02fe4080b217eadb17711dd

The hash is composed of 64 hexadecimal characters 0123456789abcdef (ie 128 bits)

dCode retains ownership of the source code of the script SHA-256 online. Except explicit open source licence (indicated Creative Commons / free), any algorithm, applet, snippet, software (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any function (convert, solve, decrypt, encrypt, decipher, cipher, decode, code, translate) written in any informatic langauge (PHP, Java, C#, Python, Javascript, Matlab, etc.) which dCode owns rights will not be given for free. So if you need to download the online SHA-256 script for offline use, check contact page !

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Source : https://www.dcode.fr/sha256-hash

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