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**SHA-256** produces a 256-bit (32-byte) hash value._newline__newline_Data_newline__newline_SHA-256 hash_newline__newline_Calculate SHA256 hash_newline__newline_[#](#what-is-sha-256) What is SHA-256?_newline_--------------------------------------_newline__newline_The SHA (Secure Hash Algorithm) is one of a number of **cryptographic hash functions**. A cryptographic hash is like a signature for a data set. If you would like to compare two sets of raw data (source of the file, text or similar) it is always better to hash it and compare SHA256 values. It is like the fingerprints of the data. Even if only one symbol is changed the algorithm will produce different hash value. SHA256 algorithm generates an almost-unique, **fixed size** 256-bit (32-byte) hash. Hash is so called a one way function. This makes it suitable for checking integrity of your data, challenge hash authentication, anti-tamper, digital signatures, blockchain._newline__newline_With the newest hardware (CPU and GPU) improvements it is become possible to **decrypt SHA256** algorithm back. So it is no longer recommended to use it for password protection or other similar use cases. Some years ago you would protect your passwords from hackers by storing SHA256 encrypted password in the your data base. This is no longer a case._newline__newline_SHA256 algorithm can be still used for making sure you acquired the same data as the original one. For example if you download something you can easily check if data has not changed due to network errors or malware injection. You can **compare hashes of your file and original one** which is usually provided in the website you are getting data or the file from._newline_

Calculate SHA3-256