jose/dist/node/esm/runtime/sign.js

import * as crypto from 'crypto';
import { promisify } from 'util';
import nodeDigest from './dsa_digest.js';
import hmacDigest from './hmac_digest.js';
import nodeKey from './node_key.js';
import getSignKey from './get_sign_verify_key.js';
let oneShotSign;
if (crypto.sign.length > 3) {
    oneShotSign = promisify(crypto.sign);
}
else {
    oneShotSign = crypto.sign;
}
const sign = async (alg, key, data) => {
    const keyObject = getSignKey(alg, key, 'sign');
    if (alg.startsWith('HS')) {
        const bitlen = parseInt(alg.substr(-3), 10);
        if (!keyObject.symmetricKeySize || keyObject.symmetricKeySize << 3 < bitlen) {
            throw new TypeError(`${alg} requires symmetric keys to be ${bitlen} bits or larger`);
        }
        const hmac = crypto.createHmac(hmacDigest(alg), keyObject);
        hmac.update(data);
        return hmac.digest();
    }
    return oneShotSign(nodeDigest(alg), data, nodeKey(alg, keyObject));
};
export default sign;