perfgate-sha256

Minimal SHA-256 implementation for perfgate fingerprinting.

Part of the perfgate workspace.

Overview

A #![no_std]-compatible SHA-256 hash function returning a hexadecimal string. Designed for fingerprinting and identification, not cryptographic security. Zero external dependencies.

Features

std (default) — enables std support
Without std — uses alloc::string::String only

Key API

sha256_hex(data: &[u8]) — compute SHA-256 and return a 64-char lowercase hex string

Example

use perfgate_sha256::sha256_hex;

let hash = sha256_hex(b"hello");
assert_eq!(hash, "2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824");
assert_eq!(hash.len(), 64);

let empty = sha256_hex(b"");
assert_eq!(empty, "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855");

License