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82 lines
2.4 KiB
82 lines
2.4 KiB
2 years ago
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import createHash from "../create-hash";
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import stream from "stream";
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import { inherits as inherits$0 } from "util";
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import sign from "./sign";
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import verify from "./verify";
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import algorithms from "./algorithms.json";
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var inherits = { inherits: inherits$0 }.inherits;
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Object.keys(algorithms).forEach(function (key) {
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algorithms[key].id = Buffer.from(algorithms[key].id, 'hex');
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algorithms[key.toLowerCase()] = algorithms[key];
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});
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function Sign(algorithm) {
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stream.Writable.call(this);
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var data = algorithms[algorithm];
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if (!data)
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throw new Error('Unknown message digest');
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this._hashType = data.hash;
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this._hash = createHash(data.hash);
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this._tag = data.id;
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this._signType = data.sign;
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}
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inherits(Sign, stream.Writable);
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Sign.prototype._write = function _write(data, _, done) {
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this._hash.update(data);
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done();
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};
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Sign.prototype.update = function update(data, enc) {
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if (typeof data === 'string')
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data = Buffer.from(data, enc);
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this._hash.update(data);
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return this;
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};
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Sign.prototype.sign = function signMethod(key, enc) {
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this.end();
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var hash = this._hash.digest();
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var sig = sign(hash, key, this._hashType, this._signType, this._tag);
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return enc ? sig.toString(enc) : sig;
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};
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function Verify(algorithm) {
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stream.Writable.call(this);
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var data = algorithms[algorithm];
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if (!data)
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throw new Error('Unknown message digest');
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this._hash = createHash(data.hash);
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this._tag = data.id;
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this._signType = data.sign;
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}
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inherits(Verify, stream.Writable);
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Verify.prototype._write = function _write(data, _, done) {
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this._hash.update(data);
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done();
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};
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Verify.prototype.update = function update(data, enc) {
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if (typeof data === 'string')
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data = Buffer.from(data, enc);
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this._hash.update(data);
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return this;
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};
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Verify.prototype.verify = function verifyMethod(key, sig, enc) {
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if (typeof sig === 'string')
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sig = Buffer.from(sig, enc);
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this.end();
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var hash = this._hash.digest();
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return verify(sig, hash, key, this._signType, this._tag);
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};
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function createSign(algorithm) {
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return new Sign(algorithm);
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}
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function createVerify(algorithm) {
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return new Verify(algorithm);
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}
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export { createSign as Sign };
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export { createVerify as Verify };
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export { createSign };
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export { createVerify };
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export default {
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Sign: createSign,
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Verify: createVerify,
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createSign: createSign,
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createVerify: createVerify
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};
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