initial commit. phase 1 complete

2026-05-05 20:45:19 +02:00
parent d9c68313a0
commit 89e058ffac
20631 changed files with 3224610 additions and 43 deletions
@@ -0,0 +1,20 @@
+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));