de.flexiprovider.core.rsa
Class RSAPrivateCrtKey

java.lang.Object
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  +--de.flexiprovider.api.keys.PrivateKey
        |
        +--de.flexiprovider.core.rsa.interfaces.RSAPrivateKey
              |
              +--de.flexiprovider.core.rsa.interfaces.RSAPrivateCrtKey
                    |
                    +--de.flexiprovider.core.rsa.RSAPrivateCrtKey

All Implemented Interfaces:

Key, java.security.Key, java.security.PrivateKey, RSAKey, java.security.interfaces.RSAKey, java.security.interfaces.RSAPrivateCrtKey, java.security.interfaces.RSAPrivateKey, java.io.Serializable

Direct Known Subclasses:

MeRSAPrivateKey, MpRSAPrivateKey

public class RSAPrivateCrtKey

extends RSAPrivateCrtKey

This class implements the RSAPrivateCrtKey interface. It represents a RSA private key with additional information (for the RSA decryption with the CRT) and is usually instantiated from RSAKeyPairGenerator.

Author:

Thomas Wahrenbruch

See Also:

RSAKeyPairGenerator, Serialized Form

Field Summary

protected FlexiBigInt	crtCoeff The CRT coefficient q-1 mod p.
protected FlexiBigInt	d The private exponent d.
protected FlexiBigInt	dP The number d mod (p-1).
protected FlexiBigInt	dQ The number d mod (q-1).
protected FlexiBigInt	e The public exponent e.
protected FlexiBigInt	n The number n = p*q.
protected FlexiBigInt	p The prime p.
protected FlexiBigInt	q The prime q.

Fields inherited from interface java.security.PrivateKey

serialVersionUID

Constructor Summary

	RSAPrivateCrtKey(FlexiBigInt n, FlexiBigInt e, FlexiBigInt d, FlexiBigInt p, FlexiBigInt q, FlexiBigInt dP, FlexiBigInt dQ, FlexiBigInt crtCoeff) Generate a new RSA private key.
protected	RSAPrivateCrtKey(RSAPrivateCrtKeySpec keySpec) Construct an RSAPrivCrtKey out of the given key specification.

Method Summary

boolean	equals(java.lang.Object other) Compare this key with another object.
protected codec.asn1.ASN1Type	getAlgParams()
FlexiBigInt	getCRTCoeff()
FlexiBigInt	getD()
FlexiBigInt	getDp()
FlexiBigInt	getDq()
FlexiBigInt	getE()
protected byte[]	getKeyData()
FlexiBigInt	getN()
protected codec.asn1.ASN1ObjectIdentifier	getOID()
FlexiBigInt	getP()
FlexiBigInt	getQ()
int	hashCode()
java.lang.String	toString()

Methods inherited from class de.flexiprovider.core.rsa.interfaces.RSAPrivateCrtKey

getCrtCoefficient, getPrimeExponentP, getPrimeExponentQ, getPrimeP, getPrimeQ, getPublicExponent

Methods inherited from class de.flexiprovider.core.rsa.interfaces.RSAPrivateKey

getAlgorithm, getModulus, getPrivateExponent

Methods inherited from class de.flexiprovider.api.keys.PrivateKey

getEncoded, getFormat

Methods inherited from class java.lang.Object

, clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.security.interfaces.RSAPrivateKey

getPrivateExponent

Methods inherited from interface java.security.Key

getAlgorithm, getEncoded, getFormat

Methods inherited from interface java.security.interfaces.RSAKey

getModulus

Field Detail

n

protected FlexiBigInt n

The number n = p*q.

d

protected FlexiBigInt d

The private exponent d.

e

protected FlexiBigInt e

The public exponent e.

p

protected FlexiBigInt p

The prime p.

q

protected FlexiBigInt q

The prime q.

dP

protected FlexiBigInt dP

The number d mod (p-1).

dQ

protected FlexiBigInt dQ

The number d mod (q-1).

crtCoeff

protected FlexiBigInt crtCoeff

The CRT coefficient q^-1 mod p.

Constructor Detail

RSAPrivateCrtKey

public RSAPrivateCrtKey(FlexiBigInt n,
                        FlexiBigInt e,
                        FlexiBigInt d,
                        FlexiBigInt p,
                        FlexiBigInt q,
                        FlexiBigInt dP,
                        FlexiBigInt dQ,
                        FlexiBigInt crtCoeff)

Generate a new RSA private key.

Parameters:

n - the number n = p*q;

e - the public exponent e.

d - the private exponent d.

p - the prime p.

q - the prime q.

dP - the number d mod (p-1).

dQ - the number d mod (q-1).

crtCoeff - the coefficient for RSA decryption with the CRT.

See Also:

RSAKeyPairGenerator

RSAPrivateCrtKey

protected RSAPrivateCrtKey(RSAPrivateCrtKeySpec keySpec)

Construct an RSAPrivCrtKey out of the given key specification.

Parameters:

keySpec - the key specification

Method Detail

getN

public FlexiBigInt getN()

Returns:

the n n

getE

public FlexiBigInt getE()

Overrides:

getE in class RSAPrivateCrtKey

Returns:

the public exponent e

getD

public FlexiBigInt getD()

Overrides:

getD in class RSAPrivateKey

Returns:

the private exponent d

getP

public FlexiBigInt getP()

Overrides:

getP in class RSAPrivateCrtKey

Returns:

the prime p

getQ

public FlexiBigInt getQ()

Overrides:

getQ in class RSAPrivateCrtKey

Returns:

the prime q

getDp

public FlexiBigInt getDp()

Overrides:

getDp in class RSAPrivateCrtKey

Returns:

the private exponent d mod (p-1)

getDq

public FlexiBigInt getDq()

Overrides:

getDq in class RSAPrivateCrtKey

Returns:

the private exponent d mod (q-1)

getCRTCoeff

public FlexiBigInt getCRTCoeff()

Overrides:

getCRTCoeff in class RSAPrivateCrtKey

Returns:

the CRT coefficient

equals

public boolean equals(java.lang.Object other)

Compare this key with another object.

Overrides:

equals in class java.lang.Object

Parameters:

other - the other object

Returns:

the result of the comparison

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

Returns:

a human readable form of the key

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

getOID

protected codec.asn1.ASN1ObjectIdentifier getOID()

Overrides:

getOID in class PrivateKey

Returns:

the OID to encode in the SubjectPublicKeyInfo structure

getAlgParams

protected codec.asn1.ASN1Type getAlgParams()

Overrides:

getAlgParams in class PrivateKey

Returns:

the algorithm parameters to encode in the SubjectPublicKeyInfo structure

getKeyData

protected byte[] getKeyData()

Overrides:

getKeyData in class PrivateKey

Returns:

the keyData to encode in the SubjectPublicKeyInfo structure