@libp2p/crypto
Version:
Crypto primitives for libp2p
60 lines • 2.04 kB
JavaScript
import crypto from 'crypto';
import { promisify } from 'util';
import { InvalidParametersError } from '@libp2p/interface';
import { fromString as uint8ArrayFromString } from 'uint8arrays/from-string';
import randomBytes from '../../random-bytes.js';
import * as utils from './utils.js';
const keypair = promisify(crypto.generateKeyPair);
export { utils };
export async function generateRSAKey(bits) {
// @ts-expect-error node types are missing jwk as a format
const key = await keypair('rsa', {
modulusLength: bits,
publicKeyEncoding: { type: 'pkcs1', format: 'jwk' },
privateKeyEncoding: { type: 'pkcs1', format: 'jwk' }
});
return {
// @ts-expect-error node types are missing jwk as a format
privateKey: key.privateKey,
// @ts-expect-error node types are missing jwk as a format
publicKey: key.publicKey
};
}
export { randomBytes as getRandomValues };
export async function hashAndSign(key, msg) {
const hash = crypto.createSign('RSA-SHA256');
if (msg instanceof Uint8Array) {
hash.update(msg);
}
else {
for (const buf of msg) {
hash.update(buf);
}
}
// @ts-expect-error node types are missing jwk as a format
return hash.sign({ format: 'jwk', key });
}
export async function hashAndVerify(key, sig, msg) {
const hash = crypto.createVerify('RSA-SHA256');
if (msg instanceof Uint8Array) {
hash.update(msg);
}
else {
for (const buf of msg) {
hash.update(buf);
}
}
// @ts-expect-error node types are missing jwk as a format
return hash.verify({ format: 'jwk', key }, sig);
}
export function rsaKeySize(jwk) {
if (jwk.kty !== 'RSA') {
throw new InvalidParametersError('Invalid key type');
}
else if (jwk.n == null) {
throw new InvalidParametersError('Invalid key modulus');
}
const modulus = uint8ArrayFromString(jwk.n, 'base64url');
return modulus.length * 8;
}
//# sourceMappingURL=index.js.map