subtle.encrypt(algorithm, key, data)

• algorithm：<RsaOaepParams> | <AesCtrParams> | <AesCbcParams> | <AesGcmParams>

• key：<CryptoKey>

• data：<ArrayBuffer> | <TypedArray> | <DataView> | <Buffer>

• 返回：<Promise> 成功后使用 <ArrayBuffer> 完成。

  ¥Returns: <Promise> Fulfills with an <ArrayBuffer> upon success.

使用 algorithm 指定的方法和参数以及 key 提供的密钥材料，subtle.encrypt() 尝试对 data 进行加密。如果成功，返回的 promise 将使用包含加密结果的 <ArrayBuffer> 进行解析。

¥Using the method and parameters specified by algorithm and the keying material provided by key, subtle.encrypt() attempts to encipher data. If successful, the returned promise is resolved with an <ArrayBuffer> containing the encrypted result.

目前支持的算法包括：

¥The algorithms currently supported include:

• 'RSA-OAEP'

• 'AES-CTR'

• 'AES-CBC'

• 'AES-GCM'