Market Ruler HelpDifference between revisions of "SHA-256"
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| − | '''SHA-256''' is a hash function in the '''SHA-2''' family. '''SHA''' stands for '''Secure Hash Algorithm''' and refers to a set of cryptographic hash functions designed by the National Security Agency and published by the National Institute of Standards and Technology as a U.S. Federal Information Processing Standard. The cryptographic hash function, a basic tool of modern cryptography, is a mathematical algorithm that maps data of arbitrary size to a bit array of a fixed size ("hash"). A hash is like a signature for a data set. '''SHA-256''' uses 32-byte words. In computing, a word is the natural unit of data used by a particular processor design. | + | '''SHA-256''' is a hash function in the '''SHA-2''' family. '''SHA''' stands for '''Secure Hash Algorithm''' and refers to a set of cryptographic hash functions designed by the National Security Agency and published by the National Institute of Standards and Technology as a U.S. Federal Information Processing Standard. The cryptographic hash function, a basic tool of modern cryptography, is a mathematical algorithm that maps data of arbitrary size to a bit array of a fixed size ("hash"). A hash is like a signature or fingerprint for a data set. '''SHA-256''' uses 32-byte words. In computing, a word is the natural unit of data used by a particular processor design. '''SHA-256''' is considered a "one-way" function and thus is suitable for checking the integrity of data. |
Example: | Example: | ||
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| + | '''String:''' | ||
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| + | <code>Hello world!</code> | ||
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| + | '''SHA-256 (produces a 256-bit (32-byte) hash value):''' | ||
| + | |||
| + | c0535e4be2b79ffd93291305436bf889314e4a3faec05ecffcbb7df31ad9e51a | ||
Revision as of 01:56, 11 July 2020
SHA-256 is a hash function in the SHA-2 family. SHA stands for Secure Hash Algorithm and refers to a set of cryptographic hash functions designed by the National Security Agency and published by the National Institute of Standards and Technology as a U.S. Federal Information Processing Standard. The cryptographic hash function, a basic tool of modern cryptography, is a mathematical algorithm that maps data of arbitrary size to a bit array of a fixed size ("hash"). A hash is like a signature or fingerprint for a data set. SHA-256 uses 32-byte words. In computing, a word is the natural unit of data used by a particular processor design. SHA-256 is considered a "one-way" function and thus is suitable for checking the integrity of data.
Example:
String:
Hello world!
SHA-256 (produces a 256-bit (32-byte) hash value):
c0535e4be2b79ffd93291305436bf889314e4a3faec05ecffcbb7df31ad9e51a