Class 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)

Fields

Modifier and Type Field Description
static BigInteger F0

The public-exponent value F0 = 3.
static BigInteger F4

The public exponent-value F4 = 65537.

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.

Methods

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

Fields

F0

public static final BigInteger F0

The public-exponent value F0 = 3.

F4

public static final BigInteger F4

The public exponent-value F4 = 65537.

Constructors

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

Methods

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

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https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/security/spec/RSAKeyGenParameterSpec.html