Java in a Nutshell, 5th Edition [Electronic resources]

This class is a transparent representation of an RSA private key.

public class 
RSAPrivateKeySpec  implements KeySpec {
// Public Constructors
public 
RSAPrivateKeySpec (java.math.BigInteger 
modulus , 
java.math.BigInteger 
privateExponent );  
// Public Instance Methods
public java.math.BigInteger 
getModulus ( );  
public java.math.BigInteger 
getPrivateExponent ( );  
}

Subclasses

RSAMultiPrimePrivateCrtKeySpec, RSAPrivateCrtKeySpec