Std::Hash

Cryptographic and general-purpose hash functions.

Module: Std::Hash

Each algorithm lives in its own submodule (Std::Hash::Sha256, etc.) and exposes a single static Hash that takes a message and returns its digest as a lowercase hex string.

import Std::Hash::Sha256;
import Std::Io::PrintLine;

func Main() -> int {
    PrintLine(Sha256::Hash("hello"));
    // 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824
    return 0;
}

Algorithms

Algorithm	Digest size	Hex length	Notes
Blake2	64 bytes (512-bit)	128	Fast, secure.
Blake3	32 bytes (256-bit)	64	Fast, secure.
Sha256	32 bytes (256-bit)	64	Secure; widely used.
Sha512	64 bytes (512-bit)	128	Secure; widely used.
Sha1	20 bytes (160-bit)	40	⚠️ Broken — legacy only.
Sha0	20 bytes (160-bit)	40	⚠️ Broken — historical.
Md5	16 bytes (128-bit)	32	⚠️ Broken — checksums only.

WARNING

MD5, SHA-0, and SHA-1 are cryptographically broken. Do not use them for signatures, passwords, or integrity against an adversary. For new security work, choose SHA-256, SHA-512, BLAKE2, or BLAKE3.