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SHA-256 is part of the SHA-2 family of hash functions with a 256-bit output and a 128-bit security level.

SHA-256 is one of the algorithms in the SHA-2 family of cryptographic hash functions defined by NIST. It processes the input in 512-bit block and has a 256-bit output, for a 128-bit security level. It is defined in terms of operations on 32-bit words.

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