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:

Field Summary

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

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 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

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https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/security/spec/RSAKeyGenParameterSpec.html