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sha512_224

Apache-2.0Release 1L3

SHA-512/224 (FIPS 180-4 §5.3.6.1) — wrapper over sha512 with a distinct IV + 7-word truncation = 224 bits.

Module sha512_224 | Source packages/front/fw/src/crypto/hash/sha512_224.js | Deps sha512 | Worker-safe yes

Truncated SHA-512 variant. Faster than SHA-256 on 64-bit platforms (in C/asm); in JS, performance is equivalent to SHA-256.

Resolve

const sha512_224 = runtime.resolve('sha512_224');
// Returns: { name, fn, hash }

API

Method Signature Returns
hash (data) => bitArray Digest 7 words × 32 bits = 224 bits
fn constructor() Streaming HMAC-compatible (blockSize 1024)

Examples

const { sha512_224, hex, bitArray } = fw.runtime.resolveAll(['sha512_224', 'hex', 'bitArray']);
hex.fromBytes(bitArray.ba_to_ui8(sha512_224.hash('abc')));
// "4634270f707b6a54daae7530460842e20e37ed265ceee9a43e8924aa"

Worker Usage

const worker = fw.createWorker(
    function ({ libs, args }) { self.postMessage(libs.sha512_224.hash(args[0])); },
    { dependencies: ['sha512_224'], args: ['abc'] }
);

Notes

  • IV derived by independent computation per FIPS 180-4 §5.3.6 (cross-checked against OpenSSL sha512.c).
  • Block size: 1024 bits (HMAC-compatible).
  • LDT 1 GiB gated behind CRYPTO_FULL=1 (gap-fix post-upgrade audit).

See also