SHA-2(256) (Secure Hash Algorithm 2 (256)) was proposed by the U.S. National Institute for
Standards and Technology (NIST) for certain U.S. federal government
applications. The algorithm takes a message of arbitrary length and produces a
256-bit message digest.
The SHA-2(256) algorithm was designed to produce outputs that provide security
comparable to that projected for the Advanced Encryption Standard (AES ).
algorithm is designed to be quite fast
on 32-bit machines.
The SHA-2(256) algorithm is
specified in DFIPS 180-2.
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