org.kocakosm.pitaya.security

Class HMAC

java.lang.Object

org.kocakosm.pitaya.security.HMAC

public final class HMAC
extends Object

Somme commonly used HMAC (Hash-based Message Authentication Code) engines. A HMAC is a specific construction for calculating a MAC involving a cryptographic hash function in combination with a secret key. As with any MAC, it may be used to simultaneously verify both the data integrity and the authenticity of a message. The cryptographic strength of a HMAC depends on the cryptographic strength of the underlying hash function, the length of its hash output in bits, and, on the size and quality of the key. HMAC is specified in RFC 2104. None of the MAC instances returned by this class is thread-safe.

Author:

Osman KOCAK

Method Summary

Methods

Modifier and Type	Method and Description
static MAC	keccak224(byte... key) Returns a new Keccak-224 HMAC engine.
static MAC	keccak256(byte... key) Returns a new Keccak-256 HMAC engine.
static MAC	keccak384(byte... key) Returns a new Keccak-384 HMAC engine.
static MAC	keccak512(byte... key) Returns a new Keccak-512 HMAC engine.
static MAC	md2(byte... key) Returns a new MD2 HMAC engine.
static MAC	md4(byte... key) Returns a new MD4 HMAC engine.
static MAC	md5(byte... key) Returns a new MD5 HMAC engine.
static MAC	sha1(byte... key) Returns a new SHA1 HMAC engine.
static MAC	sha256(byte... key) Returns a new SHA-256 HMAC engine.
static MAC	sha512(byte... key) Returns a new SHA-512 HMAC engine.

Methods inherited from class java.lang.Object

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

Method Detail

md2

public static MAC md2(byte... key)

Returns a new MD2 HMAC engine.

Parameters:

key - the HMAC's secret key.

Returns:

a new MD2 HMAC engine.

Throws:

NullPointerException - if key is null.

md4

public static MAC md4(byte... key)

Returns a new MD4 HMAC engine.

Parameters:

key - the HMAC's secret key.

Returns:

a new MD4 HMAC engine.

Throws:

NullPointerException - if key is null.

md5

public static MAC md5(byte... key)

Returns a new MD5 HMAC engine.

Parameters:

key - the HMAC's secret key.

Returns:

a new MD5 HMAC engine.

Throws:

NullPointerException - if key is null.

sha1

public static MAC sha1(byte... key)

Returns a new SHA1 HMAC engine.

Parameters:

key - the HMAC's secret key.

Returns:

a new SHA1 HMAC engine.

Throws:

NullPointerException - if key is null.

sha256

public static MAC sha256(byte... key)

Returns a new SHA-256 HMAC engine.

Parameters:

key - the HMAC's secret key.

Returns:

a new SHA-256 HMAC engine.

Throws:

NullPointerException - if key is null.

sha512

public static MAC sha512(byte... key)

Returns a new SHA-512 HMAC engine.

Parameters:

key - the HMAC's secret key.

Returns:

a new SHA-512 HMAC engine.

Throws:

NullPointerException - if key is null.

keccak224

public static MAC keccak224(byte... key)

Returns a new Keccak-224 HMAC engine.

Parameters:

key - the HMAC's secret key.

Returns:

a new Keccak-224 HMAC engine.

Throws:

NullPointerException - if key is null.

keccak256

public static MAC keccak256(byte... key)

Returns a new Keccak-256 HMAC engine.

Parameters:

key - the HMAC's secret key.

Returns:

a new Keccak-256 HMAC engine.

Throws:

NullPointerException - if key is null.

keccak384

public static MAC keccak384(byte... key)

Returns a new Keccak-384 HMAC engine.

Parameters:

key - the HMAC's secret key.

Returns:

a new Keccak-384 HMAC engine.

Throws:

NullPointerException - if key is null.

keccak512

public static MAC keccak512(byte... key)

Returns a new Keccak-512 HMAC engine.

Parameters:

key - the HMAC's secret key.

Returns:

a new Keccak-512 HMAC engine.

Throws:

NullPointerException - if key is null.