cipher.getAuthTag()
-
返回:<Buffer> 当使用经过身份验证的加密模式(目前支持
GCM
、CCM
、OCB
和chacha20-poly1305
)时,cipher.getAuthTag()
方法返回一个Buffer
,其中包含根据给定数据计算出的身份验证标记。¥Returns: <Buffer> When using an authenticated encryption mode (
GCM
,CCM
,OCB
, andchacha20-poly1305
are currently supported), thecipher.getAuthTag()
method returns aBuffer
containing the authentication tag that has been computed from the given data.
只有在使用 cipher.final()
方法完成加密后才应调用 cipher.getAuthTag()
方法。
¥The cipher.getAuthTag()
method should only be called after encryption has
been completed using the cipher.final()
method.
如果在创建 cipher
实例时设置了 authTagLength
选项,则此函数将准确返回 authTagLength
个字节。
¥If the authTagLength
option was set during the cipher
instance's creation,
this function will return exactly authTagLength
bytes.