method SubtleCrypto.wrapKey SubtleCrypto.wrapKey(format: KeyFormatkey: CryptoKeywrappingKey: CryptoKeywrapAlgorithm: | AlgorithmIdentifier | RsaOaepParams | AesCbcParams | AesCtrParams): Promise<ArrayBuffer> Parameters format: KeyFormat key: CryptoKey wrappingKey: CryptoKey wrapAlgorithm: | AlgorithmIdentifier | RsaOaepParams | AesCbcParams | AesCtrParams Return Type Promise<ArrayBuffer>