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- import { JOSENotSupported } from '../util/errors.js';
- import random from '../runtime/random.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) => random(new Uint8Array(bitLength(alg) >> 3));
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