de.flexiprovider.core.rprimersa
Class RprimeRSAKeyGenParameterSpec

java.lang.Object
  |
  +--de.flexiprovider.core.rprimersa.RprimeRSAKeyGenParameterSpec

All Implemented Interfaces:

AlgorithmParameterSpec, java.security.spec.AlgorithmParameterSpec

public final class RprimeRSAKeyGenParameterSpec

extends java.lang.Object

implements AlgorithmParameterSpec

This class specifies parameters used by the RprimeRSAKeyPairGenerator.

Author:

Paul Nguentcheu, Martin Döring

Field Summary

static int	DEFAULT_KEY_SIZE The default bit length of the modulus n (1024 bits)
static int	DEFAULT_NUM_PRIMES The default number of primes
static int	DEFAULT_PRIVATE_EXPONENT_SIZE The default bit length of the private exponent d modulo all primes

Constructor Summary

RprimeRSAKeyGenParameterSpec()
Construct the default rebalanced multi-prime RSA key generation parameters.

RprimeRSAKeyGenParameterSpec(int keySize)
Construct new rebalanced multi-prime RSA key generation parameters from the given key size.

RprimeRSAKeyGenParameterSpec(int keySize, int k)
Construct new rebalanced multi-prime RSA key generation parameters from the given key size and number of primes.

RprimeRSAKeyGenParameterSpec(int keySize, int k, int s)
Construct new rebalanced multi-prime RSA key generation parameters from the given key size, number of primes, and bit length of the private exponent d modulo all primes.

Method Summary

int	getKeySize()
int	getNumPrimes()
int	getPrivExpSize()

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_KEY_SIZE

public static final int DEFAULT_KEY_SIZE

The default bit length of the modulus n (1024 bits)

DEFAULT_NUM_PRIMES

public static final int DEFAULT_NUM_PRIMES

The default number of primes

DEFAULT_PRIVATE_EXPONENT_SIZE

public static final int DEFAULT_PRIVATE_EXPONENT_SIZE

The default bit length of the private exponent d modulo all primes

Constructor Detail

RprimeRSAKeyGenParameterSpec

public RprimeRSAKeyGenParameterSpec()

Construct the default rebalanced multi-prime RSA key generation parameters. The key size is chosen as DEFAULT_KEY_SIZE. The number of primes is chosen as DEFAULT_NUM_PRIMES. The bit length of the private exponent d modulo all primes is chosen as DEFAULT_PRIVATE_EXPONENT_SIZE.

RprimeRSAKeyGenParameterSpec

public RprimeRSAKeyGenParameterSpec(int keySize)

Construct new rebalanced multi-prime RSA key generation parameters from the given key size. The number of primes is chosen as DEFAULT_NUM_PRIMES. The bit length of the private exponent d modulo all primes is chosen as DEFAULT_PRIVATE_EXPONENT_SIZE. If the key size is invalid, choose the DEFAULT_KEY_SIZE.

Parameters:

keySize - the bit length of the modulus n (>= 512)

RprimeRSAKeyGenParameterSpec

public RprimeRSAKeyGenParameterSpec(int keySize,
                                    int k)

Construct new rebalanced multi-prime RSA key generation parameters from the given key size and number of primes. The bit length of the private exponent d modulo all primes is chosen as DEFAULT_PRIVATE_EXPONENT_SIZE. If the key size is invalid, choose the DEFAULT_KEY_SIZE. If the number of primes is invalid, choose the DEFAULT_NUM_PRIMES.

Parameters:

keySize - the bit length of the modulus n (>= 512)

k - the number of primes (>= 2)

RprimeRSAKeyGenParameterSpec

public RprimeRSAKeyGenParameterSpec(int keySize,
                                    int k,
                                    int s)

Construct new rebalanced multi-prime RSA key generation parameters from the given key size, number of primes, and bit length of the private exponent d modulo all primes. If the key size is invalid, choose the DEFAULT_KEY_SIZE. If the number of primes is invalid, choose the DEFAULT_NUM_PRIMES. If the bit length of the private exponent is invalid, choose the DEFAULT_PRIVATE_EXPONENT_SIZE.

Parameters:

keySize - the bit length of the modulus n (>= 512)

k - the number of primes (>= 2)

s - the bit length of the private exponent d modulo all primes (>= 2)

Method Detail

getKeySize

public int getKeySize()

Returns:

the bit length of the modulus n

getNumPrimes

public int getNumPrimes()

Returns:

the number of primes

getPrivExpSize

public int getPrivExpSize()

Returns:

the bit length of the private exponent d modulo all primes