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import { JOSENotSupported } from '../util/errors.ts'import random from '../runtime/random.ts'
export function bitLength(alg: string) {  switch (alg) {    case 'A128GCM':    case 'A128GCMKW':    case 'A192GCM':    case 'A192GCMKW':    case 'A256GCM':    case 'A256GCMKW':      return 96    case 'A128CBC-HS256':    case 'A192CBC-HS384':    case 'A256CBC-HS512':      return 128    default:      throw new JOSENotSupported(`Unsupported JWE Algorithm: ${alg}`)  }}export default (alg: string): Uint8Array => random(new Uint8Array(bitLength(alg) >> 3))