org.spongycastle.crypto.params

Class SkeinParameters

java.lang.Object

org.spongycastle.crypto.params.SkeinParameters

All Implemented Interfaces:

CipherParameters

public class SkeinParameters
extends java.lang.Object
implements CipherParameters

Parameters for the Skein hash function - a series of byte[] strings identified by integer tags.

Parameterised Skein can be used for:

• MAC generation, by providing a key.
• Randomised hashing, by providing a nonce.
• A hash function for digital signatures, associating a public key with the message digest.
• A key derivation function, by providing a key identifier.
• Personalised hashing, by providing a recommended format or arbitrary personalisation string.

See Also:

SkeinEngine, SkeinDigest, SkeinMac

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SkeinParameters.Builder A builder for SkeinParameters.

Field Summary

Fields

Modifier and Type	Field and Description
static int	PARAM_TYPE_CONFIG The parameter type for the Skein configuration block: 4.
static int	PARAM_TYPE_KEY The parameter type for a secret key, supporting MAC or KDF functions: 0.
static int	PARAM_TYPE_KEY_IDENTIFIER The parameter type for a key identifier string: 16.
static int	PARAM_TYPE_MESSAGE The parameter type for the message: 48.
static int	PARAM_TYPE_NONCE The parameter type for a nonce: 20.
static int	PARAM_TYPE_OUTPUT The parameter type for the output transformation: 63.
static int	PARAM_TYPE_PERSONALISATION The parameter type for a personalisation string: 8.
static int	PARAM_TYPE_PUBLIC_KEY The parameter type for a public key: 12.

Constructor Summary

Constructors

Constructor and Description
SkeinParameters()

Method Summary

Modifier and Type	Method and Description
byte[]	getKey() Obtains the value of the key parameter, or null if not set.
byte[]	getKeyIdentifier() Obtains the value of the key identifier parameter, or null if not set.
byte[]	getNonce() Obtains the value of the nonce parameter, or null if not set.
java.util.Hashtable	getParameters() Obtains a map of type (Integer) to value (byte[]) for the parameters tracked in this object.
byte[]	getPersonalisation() Obtains the value of the personalisation parameter, or null if not set.
byte[]	getPublicKey() Obtains the value of the public key parameter, or null if not set.

Methods inherited from class java.lang.Object

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

Field Detail

PARAM_TYPE_KEY

public static final int PARAM_TYPE_KEY

The parameter type for a secret key, supporting MAC or KDF functions: 0.

See Also:

Constant Field Values

PARAM_TYPE_CONFIG

public static final int PARAM_TYPE_CONFIG

The parameter type for the Skein configuration block: 4.

See Also:

Constant Field Values

PARAM_TYPE_PERSONALISATION

public static final int PARAM_TYPE_PERSONALISATION

The parameter type for a personalisation string: 8.

See Also:

Constant Field Values

PARAM_TYPE_PUBLIC_KEY

public static final int PARAM_TYPE_PUBLIC_KEY

The parameter type for a public key: 12.

See Also:

Constant Field Values

PARAM_TYPE_KEY_IDENTIFIER

public static final int PARAM_TYPE_KEY_IDENTIFIER

The parameter type for a key identifier string: 16.

See Also:

Constant Field Values

PARAM_TYPE_NONCE

public static final int PARAM_TYPE_NONCE

The parameter type for a nonce: 20.

See Also:

Constant Field Values

PARAM_TYPE_MESSAGE

public static final int PARAM_TYPE_MESSAGE

The parameter type for the message: 48.

See Also:

Constant Field Values

PARAM_TYPE_OUTPUT

public static final int PARAM_TYPE_OUTPUT

The parameter type for the output transformation: 63.

See Also:

Constant Field Values

Constructor Detail

SkeinParameters

public SkeinParameters()

Method Detail

getParameters

public java.util.Hashtable getParameters()

Obtains a map of type (Integer) to value (byte[]) for the parameters tracked in this object.

getKey

public byte[] getKey()

Obtains the value of the key parameter, or null if not set.

getPersonalisation

public byte[] getPersonalisation()

Obtains the value of the personalisation parameter, or null if not set.

getPublicKey

public byte[] getPublicKey()

Obtains the value of the public key parameter, or null if not set.

getKeyIdentifier

public byte[] getKeyIdentifier()

Obtains the value of the key identifier parameter, or null if not set.

getNonce

public byte[] getNonce()

Obtains the value of the nonce parameter, or null if not set.