Package org.bouncycastle.crypto

Interface OutputMACCalculator<T>

Type Parameters:
T - the parameters type for the MAC calculator.
All Known Implementing Classes:
FipsOutputMACCalculator
public interface OutputMACCalculator<T>
Base interface for a MAC calculator.

  • Method Summary

    Modifier and Type
    Method
    Description
    byte[]
    getMAC()
    Return the MAC calculated on what has been written to the calculator's output stream.
    int
    getMAC(byte[] output, int off)
    Output the current MAC value for what has been written to the calculator's output stream.
    int
    getMACSize()
    Return the size of the MAC produced by this calculator in bytes.
    UpdateOutputStream
    getMACStream()
    Returns a stream that will accept data for the purpose of calculating a MAC.
    T
    getParameters()
    Return the parameters for this MAC calculator.
    void
    reset()
    Reset the calculator back to its initial state.

  • Method Details

    • getParameters

      T getParameters()
      Return the parameters for this MAC calculator.
      Returns:
      the MAC calculator's parameters.

    • getMACSize

      int getMACSize()
      Return the size of the MAC produced by this calculator in bytes.
      Returns:
      MAC length in bytes.

    • getMACStream

      UpdateOutputStream getMACStream()
      Returns a stream that will accept data for the purpose of calculating a MAC. Use org.bouncycastle.util.io.TeeOutputStream if you want to accumulate the data on the fly as well.
      Returns:
      an UpdateOutputStream

    • getMAC

      byte[] getMAC()
      Return the MAC calculated on what has been written to the calculator's output stream.
      Returns:
      a MAC.

    • getMAC

      int getMAC(byte[] output, int off)
      Output the current MAC value for what has been written to the calculator's output stream.
      Parameters:
      output - output array to write the MAC to.
      off - offset to start writing the MAC at.
      Returns:
      the number of bytes written

    • reset

      void reset()
      Reset the calculator back to its initial state.