aesGcmParams.additionalData

• 类型：<ArrayBuffer> | <TypedArray> | <DataView> | <Buffer> | <undefined>

  ¥Type: <ArrayBuffer> | <TypedArray> | <DataView> | <Buffer> | <undefined>

使用 AES-GCM 方法时，additionalData 是未加密但包含在数据验证中的额外输入。additionalData 的使用是可选的。

¥With the AES-GCM method, the additionalData is extra input that is not encrypted but is included in the authentication of the data. The use of additionalData is optional.