Package com.sshtools.common.rsa

Class Rsa

java.lang.Object

com.sshtools.common.rsa.Rsa

public final class Rsa
extends Object

Constructor Summary

Constructors

Constructor	Description
Rsa()

Method Summary

Modifier and Type	Method	Description
static BigInteger	doPrivate(BigInteger input, BigInteger modulus, BigInteger privateExponent)
static BigInteger	doPrivateCrt(BigInteger input, BigInteger privateExponent, BigInteger primeP, BigInteger primeQ, BigInteger crtCoefficient)
static BigInteger	doPrivateCrt(BigInteger input, BigInteger p, BigInteger q, BigInteger dP, BigInteger dQ, BigInteger qInv)
static BigInteger	doPublic(BigInteger input, BigInteger modulus, BigInteger publicExponent)
static Ssh2RsaPrivateCrtKey	generateKey(int bits, BigInteger e, SecureRandom secRand)
static Ssh2RsaPrivateCrtKey	generateKey(int bits, SecureRandom secRand)
static BigInteger	getPrimeExponent(BigInteger privateExponent, BigInteger prime)
static BigInteger	padPKCS1(BigInteger input, int type, int padLen)
static BigInteger	removePKCS1(BigInteger input, int type)

Methods inherited from class java.lang.Object

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

Constructor Details

Rsa

public Rsa()

Method Details

doPrivateCrt

public static BigInteger doPrivateCrt(BigInteger input,
 BigInteger privateExponent,
 BigInteger primeP,
 BigInteger primeQ,
 BigInteger crtCoefficient)

doPrivateCrt

public static BigInteger doPrivateCrt(BigInteger input,
 BigInteger p,
 BigInteger q,
 BigInteger dP,
 BigInteger dQ,
 BigInteger qInv)

getPrimeExponent

public static BigInteger getPrimeExponent(BigInteger privateExponent,
 BigInteger prime)

padPKCS1

public static BigInteger padPKCS1(BigInteger input,
 int type,
 int padLen)
                           throws IllegalStateException

Throws:

IllegalStateException

removePKCS1

public static BigInteger removePKCS1(BigInteger input,
 int type)
                              throws IllegalStateException

Throws:

IllegalStateException

generateKey

public static Ssh2RsaPrivateCrtKey generateKey(int bits,
 SecureRandom secRand)
                                        throws NoSuchAlgorithmException,
InvalidKeySpecException

Throws:

NoSuchAlgorithmException

InvalidKeySpecException

generateKey

public static Ssh2RsaPrivateCrtKey generateKey(int bits,
 BigInteger e,
 SecureRandom secRand)
                                        throws NoSuchAlgorithmException,
InvalidKeySpecException

Throws:

NoSuchAlgorithmException

InvalidKeySpecException

doPublic

public static BigInteger doPublic(BigInteger input,
 BigInteger modulus,
 BigInteger publicExponent)

doPrivate

public static BigInteger doPrivate(BigInteger input,
 BigInteger modulus,
 BigInteger privateExponent)