decipher.update(data[, inputEncoding][, outputEncoding])

• data <string> | <Buffer> | <TypedArray> | <DataView>

• inputEncoding <string> data 字符串的 字符编码。

  ¥inputEncoding <string> The encoding of the data string.

• outputEncoding <string> 返回值的 字符编码。

  ¥outputEncoding <string> The encoding of the return value.

• 返回：<Buffer> | <string>

  ¥Returns: <Buffer> | <string>

用 data 更新解密。如果给定了 inputEncoding 参数，则 data 参数是使用指定编码的字符串。如果未给定 inputEncoding 参数，则 data 必须是 Buffer。如果 data 是 Buffer，则忽略 inputEncoding。

¥Updates the decipher with data. If the inputEncoding argument is given, the data argument is a string using the specified encoding. If the inputEncoding argument is not given, data must be a Buffer. If data is a Buffer then inputEncoding is ignored.

outputEncoding 指定加密数据的输出格式。如果指定了 outputEncoding，则返回使用指定编码的字符串。如果未提供 outputEncoding，则返回 Buffer。

¥The outputEncoding specifies the output format of the enciphered data. If the outputEncoding is specified, a string using the specified encoding is returned. If no outputEncoding is provided, a Buffer is returned.

可以使用新数据多次调用 decipher.update() 方法，直到调用 decipher.final()。在 decipher.final() 之后调用 decipher.update() 将导致抛出错误。

¥The decipher.update() method can be called multiple times with new data until decipher.final() is called. Calling decipher.update() after decipher.final() will result in an error being thrown.