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gnu.java.security.key.rsa
Class RSAKeyPairGenerator  

java.lang.Object
  gnu.java.security.key.rsa.RSAKeyPairGenerator

All Implemented Interfaces:

gnu.java.security.key.IKeyPairGenerator

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public class RSAKeyPairGenerator

extends java.lang.Object

implements gnu.java.security.key.IKeyPairGenerator

A key-pair generator for asymetric keys to use in conjunction with the RSA scheme.

Reference:

1. RSA-PSS Signature Scheme with Appendix, part B. Primitive specification and supporting documentation. Jakob Jonsson and Burt Kaliski.
2. Handbook of Applied Cryptography, Alfred J. Menezes, Paul C. van Oorschot and Scott A. Vanstone. Section 11.3 RSA and related signature schemes.

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Field Summary
private static int	DEFAULT_ENCODING_FORMAT           Default encoding format to use when none was specified.
private static int	DEFAULT_MODULUS_LENGTH           Default value for the modulus length.
private  java.math.BigInteger	e           This implementation uses, by default, Fermat's F4 number as the public exponent.
private  int	L           The desired bit length of the modulus.
private static java.util.logging.Logger	log
static java.lang.String	MODULUS_LENGTH           Property name of the length (Integer) of the modulus of an RSA key.
private static java.math.BigInteger	ONE           The BigInteger constant 1.
static java.lang.String	PREFERRED_ENCODING_FORMAT           Property name of the preferred encoding format to use when externalizing generated instance of key-pairs from this generator.
private  int	preferredFormat           Preferred encoding format of generated keys.
private  gnu.java.security.util.PRNG	prng           Our default source of randomness.
private  java.security.SecureRandom	rnd           The optional java.security.SecureRandom instance to use.
static java.lang.String	RSA_PARAMETERS           Property name of an optional java.security.spec.RSAKeyGenParameterSpec instance to use for this generator's n, and e values.
static java.lang.String	SOURCE_OF_RANDOMNESS           Property name of an optional java.security.SecureRandom instance to use.
private static java.math.BigInteger	TWO           The BigInteger constant 2.

 

Constructor Summary

RSAKeyPairGenerator()

 

Method Summary
java.security.KeyPair	generate()           The algorithm used here is described in nessie-pss-B.pdf document which is part of the RSA-PSS submission to NESSIE.
private  gnu.java.security.util.PRNG	getDefaultPRNG()
java.lang.String	name()           Returns the canonical name of this keypair generator.
private  void	nextRandomBytes(byte[] buffer)           Fills the designated byte array with random data.
void	setup(java.util.Map attributes)           Configures this instance.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

log

private static final java.util.logging.Logger log

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ONE

private static final java.math.BigInteger ONE

The BigInteger constant 1.

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TWO

private static final java.math.BigInteger TWO

The BigInteger constant 2.

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MODULUS_LENGTH

public static final java.lang.String MODULUS_LENGTH

Property name of the length (Integer) of the modulus of an RSA key.

See Also:

Constant Field Values

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SOURCE_OF_RANDOMNESS

public static final java.lang.String SOURCE_OF_RANDOMNESS

Property name of an optional java.security.SecureRandom instance to use. The default is to use a classloader singleton from gnu.java.security.util.PRNG.

See Also:

Constant Field Values

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RSA_PARAMETERS

public static final java.lang.String RSA_PARAMETERS

Property name of an optional java.security.spec.RSAKeyGenParameterSpec instance to use for this generator's n, and e values. The default is to generate n and use a fixed value for e (Fermat's F4 number).

See Also:

Constant Field Values

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PREFERRED_ENCODING_FORMAT

public static final java.lang.String PREFERRED_ENCODING_FORMAT

Property name of the preferred encoding format to use when externalizing generated instance of key-pairs from this generator. The property is taken to be an java.lang.Integer that encapsulates an encoding format identifier.

See Also:

Constant Field Values

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DEFAULT_MODULUS_LENGTH

private static final int DEFAULT_MODULUS_LENGTH

Default value for the modulus length.

See Also:

Constant Field Values

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DEFAULT_ENCODING_FORMAT

private static final int DEFAULT_ENCODING_FORMAT

Default encoding format to use when none was specified.

See Also:

Constant Field Values

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L

private int L

The desired bit length of the modulus.

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e

private java.math.BigInteger e

This implementation uses, by default, Fermat's F4 number as the public exponent.

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rnd

private java.security.SecureRandom rnd

The optional java.security.SecureRandom instance to use.

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prng

private gnu.java.security.util.PRNG prng

Our default source of randomness.

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preferredFormat

private int preferredFormat

Preferred encoding format of generated keys.

Constructor Detail

RSAKeyPairGenerator

public RSAKeyPairGenerator()

Method Detail

name

public java.lang.String name()

Description copied from interface: gnu.java.security.key.IKeyPairGenerator

Returns the canonical name of this keypair generator.

Specified by:

name in interface gnu.java.security.key.IKeyPairGenerator

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setup

public void setup(java.util.Map attributes)

Configures this instance.

Specified by:

setup in interface gnu.java.security.key.IKeyPairGenerator

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generate

public java.security.KeyPair generate()

The algorithm used here is described in nessie-pss-B.pdf document which is part of the RSA-PSS submission to NESSIE.

Specified by:

generate in interface gnu.java.security.key.IKeyPairGenerator

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nextRandomBytes

private void nextRandomBytes(byte[] buffer)

Fills the designated byte array with random data.

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getDefaultPRNG

private gnu.java.security.util.PRNG getDefaultPRNG()

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> gnu >> java >> security >> key >> [ rsa overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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