com.sshtools.common.rsa

Class Rsa

java.lang.Object

com.sshtools.common.rsa.Rsa

public final class Rsa
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
Rsa()

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Detail

Rsa

public Rsa()

Method Detail

doPrivateCrt

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

doPrivateCrt

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

getPrimeExponent

public static java.math.BigInteger getPrimeExponent(java.math.BigInteger privateExponent,
                                                    java.math.BigInteger prime)

padPKCS1

public static java.math.BigInteger padPKCS1(java.math.BigInteger input,
                                            int type,
                                            int padLen)
                                     throws java.lang.IllegalStateException

Throws:

java.lang.IllegalStateException

removePKCS1

public static java.math.BigInteger removePKCS1(java.math.BigInteger input,
                                               int type)
                                        throws java.lang.IllegalStateException

Throws:

java.lang.IllegalStateException

generateKey

public static Ssh2RsaPrivateCrtKey generateKey(int bits,
                                               java.security.SecureRandom secRand)
                                        throws java.security.NoSuchAlgorithmException,
                                               java.security.spec.InvalidKeySpecException

Throws:

java.security.NoSuchAlgorithmException

java.security.spec.InvalidKeySpecException

generateKey

public static Ssh2RsaPrivateCrtKey generateKey(int bits,
                                               java.math.BigInteger e,
                                               java.security.SecureRandom secRand)
                                        throws java.security.NoSuchAlgorithmException,
                                               java.security.spec.InvalidKeySpecException

Throws:

java.security.NoSuchAlgorithmException

java.security.spec.InvalidKeySpecException

doPublic

public static java.math.BigInteger doPublic(java.math.BigInteger input,
                                            java.math.BigInteger modulus,
                                            java.math.BigInteger publicExponent)

doPrivate

public static java.math.BigInteger doPrivate(java.math.BigInteger input,
                                             java.math.BigInteger modulus,
                                             java.math.BigInteger privateExponent)