OutputMACCalculator

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

All Methods Instance Methods Abstract Methods
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 Detail
  - 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.