Top Description Fields Constructors Methods
org.bouncycastle.crypto.macs

public Class OldHMac

extends Object
implements Mac
Class Inheritance
All Implemented Interfaces
org.bouncycastle.crypto.Mac
Imports
org.bouncycastle.crypto.CipherParameters, .Digest, .Mac, org.bouncycastle.crypto.params.KeyParameter
HMAC implementation based on RFC2104 H(K XOR opad, H(K XOR ipad, text))

Field Summary

Modifier and TypeField and Description
private static final int
BLOCK_LENGTH

private Digest
digest

private int
digestSize

private byte[]
inputPad

private static final byte
IPAD

private static final byte
OPAD

private byte[]
outputPad

Constructor Summary

AccessConstructor and Description
public
OldHMac(Digest digest)

Deprecated uses incorrect pad for SHA-512 and SHA-384 use HMac.

Method Summary

Modifier and TypeMethod and Description
public int
doFinal(byte[]
the array the MAC is to be output to.
out, int
the offset into the out buffer the output is to start at.
outOff)

Implements org.bouncycastle.crypto.Mac.doFinal.

Compute the final stage of the MAC writing the output to the out parameter.
public String
getAlgorithmName()

Implements org.bouncycastle.crypto.Mac.getAlgorithmName.

Return the name of the algorithm the MAC implements.
public int
getMacSize()

Implements org.bouncycastle.crypto.Mac.getMacSize.

Return the block size for this MAC (in bytes).
public Digest
getUnderlyingDigest()

public void
init(CipherParameters
the key and other data required by the MAC.
params)

Implements org.bouncycastle.crypto.Mac.init.

Initialise the MAC.
public void
reset()

Implements org.bouncycastle.crypto.Mac.reset.

Reset the mac generator.
public void
update(byte
the byte to be processed.
in)

Implements org.bouncycastle.crypto.Mac.update.

add a single byte to the mac for processing.
public void
update(byte[]
the array containing the input.
in, int
the index in the array the data begins at.
inOff, int
the length of the input starting at inOff.
len)

Implements org.bouncycastle.crypto.Mac.update.

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

BLOCK_LENGTHback to summary
private static final int BLOCK_LENGTH
digestback to summary
private Digest digest
digestSizeback to summary
private int digestSize
inputPadback to summary
private byte[] inputPad
IPADback to summary
private static final byte IPAD
OPADback to summary
private static final byte OPAD
outputPadback to summary
private byte[] outputPad

Constructor Detail

OldHMacback to summary
public OldHMac(Digest digest)

Deprecated

uses incorrect pad for SHA-512 and SHA-384 use HMac.

Method Detail

doFinalback to summary
public int doFinal(byte[] out, int outOff)

Implements org.bouncycastle.crypto.Mac.doFinal.

Doc from org.bouncycastle.crypto.Mac.doFinal.

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.

Parameters
out:byte[]

the array the MAC is to be output to.

outOff:int

the offset into the out buffer the output is to start at.

getAlgorithmNameback to summary
public String getAlgorithmName()

Implements org.bouncycastle.crypto.Mac.getAlgorithmName.

Doc from org.bouncycastle.crypto.Mac.getAlgorithmName.

Return the name of the algorithm the MAC implements.

Returns:String

the name of the algorithm the MAC implements.

getMacSizeback to summary
public int getMacSize()

Implements org.bouncycastle.crypto.Mac.getMacSize.

Doc from org.bouncycastle.crypto.Mac.getMacSize.

Return the block size for this MAC (in bytes).

Returns:int

the block size for this MAC in bytes.

getUnderlyingDigestback to summary
public Digest getUnderlyingDigest()
initback to summary
public void init(CipherParameters params)

Implements org.bouncycastle.crypto.Mac.init.

Doc from org.bouncycastle.crypto.Mac.init.

Initialise the MAC.

Parameters
params:CipherParameters

the key and other data required by the MAC.

resetback to summary
public void reset()

Implements org.bouncycastle.crypto.Mac.reset.

Reset the mac generator.

updateback to summary
public void update(byte in)

Implements org.bouncycastle.crypto.Mac.update.

Doc from org.bouncycastle.crypto.Mac.update.

add a single byte to the mac for processing.

Parameters
in:byte

the byte to be processed.

updateback to summary
public void update(byte[] in, int inOff, int len)

Implements org.bouncycastle.crypto.Mac.update.

Parameters
in:byte[]

Doc from org.bouncycastle.crypto.Mac.update.

the array containing the input.

inOff:int

Doc from org.bouncycastle.crypto.Mac.update.

the index in the array the data begins at.

len:int

Doc from org.bouncycastle.crypto.Mac.update.

the length of the input starting at inOff.