Tool to decrypt/encrypt SHA-256. The SHA-256 hash is the US federal standard that matches an hexadecimal 64-character fingerprint to an original binary data.
SHA-256 - dCode
Tag(s) : Hashing Function, Modern Cryptography
dCode is free and its tools are a valuable help in games, maths, geocaching, puzzles and problems to solve every day!
A suggestion ? a feedback ? a bug ? an idea ? Write to dCode!
SHA256 encryption computes a 256-bit or 32-byte digital fingerprint, whose hexadecimal writing consists of 64 characters. The algorithm uses non-linear functions such as:
$$ \operatorname{Ch}(E,F,G) = (E \wedge F) \oplus (\neg E \wedge G) $$
$$ \operatorname{Ma}(A,B,C) = (A \wedge B) \oplus (A \wedge C) \oplus (B \wedge C) $$
$$ \Sigma_0(A) = (A\!\ggg\!2) \oplus (A\!\ggg\!13) \oplus (A\!\ggg\!22) $$
$$ \Sigma_1(E) = (E\!\ggg\!6) \oplus (E\!\ggg\!11) \oplus (E\!\ggg\!25) $$
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
SHA-256 encryption is a hash, which means that it is one-way and can not be decrypted.
The hash is composed of 64 hexadecimal characters 0123456789abcdef (ie 256 bits)
The SHA256 algorithm is used by blockchain and validation of Bitcoin transactions, any reference is a clue.
dCode retains ownership of the online 'SHA-256' tool source code. Except explicit open source licence (indicated CC / Creative Commons / free), any 'SHA-256' algorithm, applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any 'SHA-256' function (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) and no data download, script, copy-paste, or API access for 'SHA-256' will be for free, same for offline use on PC, tablet, iPhone or Android ! dCode is free and online.
Please, check our dCode Discord community for help requests!
NB: for encrypted messages, test our automatic cipher identifier!
Thanks to your feedback and relevant comments, dCode has developed the best 'SHA-256' tool, so feel free to write! Thank you!