org.takes.facets.auth.signatures

Class SiHmac

java.lang.Object

org.takes.facets.auth.signatures.SiHmac

All Implemented Interfaces:

Signature

public final class SiHmac
extends Object
implements Signature

HMAC codec which supports 256, 384 and 512 bit hash.

The class is immutable and thread-safe.

Since:

1.4

Version:

$Id: d823f2d478b6349bbfc292209e463f82e3e8b70d $

Author:

Sven Windisch ([email protected])

Field Summary

Fields

Modifier and Type	Field and Description
static int	HMAC256 The HMAC 256 bit variant.
static int	HMAC384 The HMAC 384 bit variant.
static int	HMAC512 The HMAC 512 bit variant.

Constructor Summary

Constructors

Constructor and Description
SiHmac(byte[] key, int bits) Ctor.
SiHmac(String key) Ctor.
SiHmac(String key, int bits) Ctor.

Method Summary

Methods

Modifier and Type	Method and Description
int	bitlength() Signature bit length.
byte[]	sign(byte[] data) Create signature for data bytes.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

HMAC256

public static final int HMAC256

The HMAC 256 bit variant.

See Also:

Constant Field Values

HMAC384

public static final int HMAC384

The HMAC 384 bit variant.

See Also:

Constant Field Values

HMAC512

public static final int HMAC512

The HMAC 512 bit variant.

See Also:

Constant Field Values

Constructor Detail

SiHmac

public SiHmac(String key)

Ctor.

Parameters:

key - The encryption key

SiHmac

public SiHmac(String key,
      int bits)

Ctor.

Parameters:

key - The encryption key

bits - The signature bit length

SiHmac

public SiHmac(byte[] key,
      int bits)

Ctor.

Parameters:

key - The encryption key

bits - The signature bit length

Method Detail

sign

public byte[] sign(byte[] data)
            throws IOException

Description copied from interface: Signature

Create signature for data bytes.

Specified by:

sign in interface Signature

Parameters:

data - The data to be signed

Returns:

Signature

Throws:

IOException - If anything fails

bitlength

public int bitlength()

Signature bit length.

Returns:

The bitlength