Module java.base

Package java.security.spec

Class RSAKeyGenParameterSpec

java.lang.Object

java.security.spec.RSAKeyGenParameterSpec

All Implemented Interfaces:

AlgorithmParameterSpec

public class RSAKeyGenParameterSpec
extends Object
implements AlgorithmParameterSpec

This class specifies the set of parameters used to generate an RSA key pair.

Since:

1.3

See Also:

• KeyPairGenerator.initialize(java.security.spec.AlgorithmParameterSpec)

Field Summary

Fields

Modifier and Type	Field	Description
static final BigInteger	F0	The public-exponent value F0 = 3.
static final BigInteger	F4	The public exponent-value F4 = 65537.

Constructor Summary

Constructors

Constructor	Description
RSAKeyGenParameterSpec(int keysize, BigInteger publicExponent)	Constructs a new RSAKeyGenParameterSpec object from the given keysize, public-exponent value, and null key parameters.
RSAKeyGenParameterSpec(int keysize, BigInteger publicExponent, AlgorithmParameterSpec keyParams)	Constructs a new RSAKeyGenParameterSpec object from the given keysize, public-exponent value, and key parameters.

Method Summary

Modifier and Type	Method	Description
AlgorithmParameterSpec	getKeyParams()	Returns the parameters to be associated with key.
int	getKeysize()	Returns the keysize.
BigInteger	getPublicExponent()	Returns the public-exponent value.

Methods declared in class java.lang.Object

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

Field Details

F0

public static final BigInteger F0

The public-exponent value F0 = 3.

F4

public static final BigInteger F4

The public exponent-value F4 = 65537.

Constructor Details

RSAKeyGenParameterSpec

public RSAKeyGenParameterSpec(int keysize,
 BigInteger publicExponent)

Constructs a new RSAKeyGenParameterSpec object from the given keysize, public-exponent value, and null key parameters.

Parameters:

keysize - the modulus size (specified in number of bits)

publicExponent - the public exponent

RSAKeyGenParameterSpec

public RSAKeyGenParameterSpec(int keysize,
 BigInteger publicExponent,
 AlgorithmParameterSpec keyParams)

Constructs a new RSAKeyGenParameterSpec object from the given keysize, public-exponent value, and key parameters.

Parameters:

keysize - the modulus size (specified in number of bits)

publicExponent - the public exponent

keyParams - the key parameters, may be null

Since:

11

Method Details

getKeysize

public int getKeysize()

Returns the keysize.

Returns:

the keysize.

getPublicExponent

public BigInteger getPublicExponent()

Returns the public-exponent value.

Returns:

the public-exponent value.

getKeyParams

public AlgorithmParameterSpec getKeyParams()

Returns the parameters to be associated with key.

Returns:

the associated parameters, may be null if not present

Since:

11