bet-mcp

import { JOSENotSupported } from '../util/errors.js'; export async function generateSecret(alg, options) { let length; let algorithm; let keyUsages; switch (alg) { case 'HS256': case 'HS384': case 'HS512': length = parseInt(alg.slice(-3), 10); algorithm = { name: 'HMAC', hash: `SHA-${length}`, length }; keyUsages = ['sign', 'verify']; break; case 'A128CBC-HS256': case 'A192CBC-HS384': case 'A256CBC-HS512': length = parseInt(alg.slice(-3), 10); return crypto.getRandomValues(new Uint8Array(length >> 3)); case 'A128KW': case 'A192KW': case 'A256KW': length = parseInt(alg.slice(1, 4), 10); algorithm = { name: 'AES-KW', length }; keyUsages = ['wrapKey', 'unwrapKey']; break; case 'A128GCMKW': case 'A192GCMKW': case 'A256GCMKW': case 'A128GCM': case 'A192GCM': case 'A256GCM': length = parseInt(alg.slice(1, 4), 10); algorithm = { name: 'AES-GCM', length }; keyUsages = ['encrypt', 'decrypt']; break; default: throw new JOSENotSupported('Invalid or unsupported JWK "alg" (Algorithm) Parameter value'); } return crypto.subtle.generateKey(algorithm, options?.extractable ?? false, keyUsages); }