OldHMac (Bouncy Castle Library 1.60 API Specification)

java.lang.Object
- org.bouncycastle.crypto.macs.OldHMac

All Implemented Interfaces:

Mac
```
public class OldHMac
extends java.lang.Object
implements Mac
```
HMAC implementation based on RFC2104 H(K XOR opad, H(K XOR ipad, text))

Constructor Summary

Constructors
Constructor Description

OldHMac(Digest digest)
Deprecated.
uses incorrect pad for SHA-512 and SHA-384 use HMac.

Constructors
Constructor	Description
`OldHMac(Digest digest)`	Deprecated. uses incorrect pad for SHA-512 and SHA-384 use HMac.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`doFinal(byte[] out, int outOff)`	Compute the final stage of the MAC writing the output to the out parameter.
`java.lang.String`	`getAlgorithmName()`	Return the name of the algorithm the MAC implements.
`int`	`getMacSize()`	Return the block size for this MAC (in bytes).
`Digest`	`getUnderlyingDigest()`
`void`	`init(CipherParameters params)`	Initialise the MAC.
`void`	`reset()`	Reset the mac generator.
`void`	`update(byte in)`	add a single byte to the mac for processing.
`void`	`update(byte[] in, int inOff, int len)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - OldHMac
```
public OldHMac(Digest digest)
```
    Deprecated.
    uses incorrect pad for SHA-512 and SHA-384 use HMac.
- Method Detail
  - getAlgorithmName
```
public java.lang.String getAlgorithmName()
```
    Description copied from interface: Mac
    
    Return the name of the algorithm the MAC implements.
    
    Specified by:
    
    getAlgorithmName in interface Mac
    
    Returns:
    
    the name of the algorithm the MAC implements.
  - getUnderlyingDigest
```
public Digest getUnderlyingDigest()
```
  - init
```
public void init(CipherParameters params)
```
    Description copied from interface: Mac
    
    Initialise the MAC.
    
    Specified by:
    
    init in interface Mac
    
    Parameters:
    
    params - the key and other data required by the MAC.
  - getMacSize
```
public int getMacSize()
```
    Description copied from interface: Mac
    
    Return the block size for this MAC (in bytes).
    
    Specified by:
    
    getMacSize in interface Mac
    
    Returns:
    
    the block size for this MAC in bytes.
  - update
```
public void update(byte in)
```
    Description copied from interface: Mac
    
    add a single byte to the mac for processing.
    
    Specified by:
    
    update in interface Mac
    
    Parameters:
    
    in - the byte to be processed.
  - update
```
public void update(byte[] in,
                   int inOff,
                   int len)
```
    Specified by:
    
    update in interface Mac
    
    Parameters:
    
    in - the array containing the input.
    
    inOff - the index in the array the data begins at.
    
    len - the length of the input starting at inOff.
  - doFinal
```
public int doFinal(byte[] out,
                   int outOff)
```
    Description copied from interface: Mac
    
    Compute the final stage of the MAC writing the output to the out parameter.
    doFinal leaves the MAC in the same state it was after the last init.
    
    Specified by:
    
    doFinal in interface Mac
    
    Parameters:
    
    out - the array the MAC is to be output to.
    
    outOff - the offset into the out buffer the output is to start at.
  - reset
```
public void reset()
```
    Reset the mac generator.
    
    Specified by:
    
    reset in interface Mac

Class OldHMac

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

OldHMac

Method Detail

getAlgorithmName

getUnderlyingDigest

init

getMacSize

update

update

doFinal

reset