File size: 575 Bytes
10852fa |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 |
import { JOSENotSupported } from '../util/errors.js';
export function bitLength(alg) {
switch (alg) {
case 'A128GCM':
return 128;
case 'A192GCM':
return 192;
case 'A256GCM':
case 'A128CBC-HS256':
return 256;
case 'A192CBC-HS384':
return 384;
case 'A256CBC-HS512':
return 512;
default:
throw new JOSENotSupported(`Unsupported JWE Algorithm: ${alg}`);
}
}
export default (alg) => crypto.getRandomValues(new Uint8Array(bitLength(alg) >> 3));
|