2025-12-03 20:54:35 +01:00

32 lines
1.0 KiB
JavaScript

import { JOSENotSupported } from '../util/errors.js';
export function subtleAlgorithm(alg, algorithm) {
const hash = `SHA-${alg.slice(-3)}`;
switch (alg) {
case 'HS256':
case 'HS384':
case 'HS512':
return { hash, name: 'HMAC' };
case 'PS256':
case 'PS384':
case 'PS512':
return { hash, name: 'RSA-PSS', saltLength: parseInt(alg.slice(-3), 10) >> 3 };
case 'RS256':
case 'RS384':
case 'RS512':
return { hash, name: 'RSASSA-PKCS1-v1_5' };
case 'ES256':
case 'ES384':
case 'ES512':
return { hash, name: 'ECDSA', namedCurve: algorithm.namedCurve };
case 'Ed25519':
case 'EdDSA':
return { name: 'Ed25519' };
case 'ML-DSA-44':
case 'ML-DSA-65':
case 'ML-DSA-87':
return { name: alg };
default:
throw new JOSENotSupported(`alg ${alg} is not supported either by JOSE or your javascript runtime`);
}
}