mirror of
https://github.com/danbulant/jose
synced 2026-05-25 04:51:47 +00:00
19 lines
560 B
JavaScript
19 lines
560 B
JavaScript
import { JOSENotSupported } from '../util/errors.js';
|
|
import random from '../runtime/random.js';
|
|
const bitLengths = new Map([
|
|
['A128CBC-HS256', 256],
|
|
['A128GCM', 128],
|
|
['A192CBC-HS384', 384],
|
|
['A192GCM', 192],
|
|
['A256CBC-HS512', 512],
|
|
['A256GCM', 256],
|
|
]);
|
|
const generateCek = (alg) => {
|
|
const bitLength = bitLengths.get(alg);
|
|
if (!bitLength) {
|
|
throw new JOSENotSupported(`Unsupported JWE Algorithm: ${alg}`);
|
|
}
|
|
return random(new Uint8Array(bitLength >> 3));
|
|
};
|
|
export default generateCek;
|
|
export { bitLengths };
|