SHA-256¶

Module: Std::Hash::Sha256

256-bit SHA-2 cryptographic hash.

Summary¶

struct Sha256

Sha256.Hash(message: char8[]) -> String

Constants¶

Constant	Value
`BlockSize`	64
`DigestSize`	32

Description¶

SHA-256 is a 256-bit hash function from the SHA-2 family, published by NIST in 2001. It uses a Merkle–Damgård construction with a Davies–Meyer compression function, processing 512-bit blocks through 64 rounds. The algorithm operates on 32-bit words with bitwise operations, modular addition, and eight working state variables.

SHA-256 remains cryptographically secure and is widely recommended as a general-purpose hash function.

The Hash method takes a char8[] and returns a hex-encoded digest string.

Example¶

import Std::Hash::Sha256;

func Main() {
    let digest = Sha256::Hash(c8"abc");
    PrintLine(digest);
    // ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad
}

Test Vectors¶

Input	Expected Digest
`c8""`	`e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855`
`c8"abc"`	`ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad`
`c8"Hello, World!"`	`dffd6021bb2bd5b0af676290809ec3a53191dd81c7f70a4b28688a362182986f`