Package org.apache.sshd.contrib.common.signature

Class LegacyDSASigner

java.lang.Object

java.security.SignatureSpi

java.security.Signature

org.apache.sshd.contrib.common.signature.LegacyDSASigner

public class LegacyDSASigner
extends java.security.Signature

A special signer for DSA that uses SHA-1 regardless of the key size

See Also:

SSHD-945 issue

Field Summary

Fields

Modifier and Type	Field	Description
static java.lang.String	LEGACY_SIGNATURE
protected java.security.MessageDigest	md
protected java.security.interfaces.DSAParams	params
protected org.apache.sshd.common.Factory<org.apache.sshd.common.random.Random>	randomFactory
protected java.math.BigInteger	x
protected java.math.BigInteger	y

Fields inherited from class java.security.Signature

SIGN, state, UNINITIALIZED, VERIFY

Fields inherited from class java.security.SignatureSpi

appRandom

Constructor Summary

Constructors

Constructor	Description
LegacyDSASigner(org.apache.sshd.common.Factory<org.apache.sshd.common.random.Random> randomFactory)

Method Summary

Modifier and Type	Method	Description
protected java.lang.Object	engineGetParameter(java.lang.String key)	Deprecated.
protected void	engineInitSign(java.security.PrivateKey key)
protected void	engineInitVerify(java.security.PublicKey key)
protected void	engineSetParameter(java.lang.String key, java.lang.Object param)	Deprecated.
protected byte[]	engineSign()
protected void	engineUpdate(byte b)
protected void	engineUpdate(byte[] data, int off, int len)
protected void	engineUpdate(java.nio.ByteBuffer b)
protected boolean	engineVerify(byte[] signature)
protected boolean	engineVerify(byte[] signature, int offset, int length)
protected java.math.BigInteger	generateK(java.math.BigInteger q)
protected java.math.BigInteger	generateR(java.math.BigInteger p, java.math.BigInteger q, java.math.BigInteger g, java.math.BigInteger k)
protected java.math.BigInteger	generateS(java.math.BigInteger x, java.math.BigInteger q, java.math.BigInteger r, java.math.BigInteger k)
protected java.math.BigInteger	generateV(java.math.BigInteger y, java.math.BigInteger p, java.math.BigInteger q, java.math.BigInteger g, java.math.BigInteger w, java.math.BigInteger r)
protected java.math.BigInteger	generateW(java.math.BigInteger p, java.math.BigInteger q, java.math.BigInteger g, java.math.BigInteger s)
protected void	initDSAParameters(java.security.interfaces.DSAKey key)

Methods inherited from class java.security.Signature

clone, getAlgorithm, getInstance, getInstance, getInstance, getParameter, getParameters, getProvider, initSign, initSign, initVerify, initVerify, setParameter, setParameter, sign, sign, toString, update, update, update, update, verify, verify

Methods inherited from class java.security.SignatureSpi

engineGetParameters, engineInitSign, engineSetParameter, engineSign

Methods inherited from class java.lang.Object

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

Field Detail

LEGACY_SIGNATURE

public static final java.lang.String LEGACY_SIGNATURE

See Also:

Constant Field Values

md

protected final java.security.MessageDigest md

randomFactory

protected final org.apache.sshd.common.Factory<org.apache.sshd.common.random.Random> randomFactory

x

protected java.math.BigInteger x

y

protected java.math.BigInteger y

params

protected java.security.interfaces.DSAParams params

Constructor Detail

LegacyDSASigner

public LegacyDSASigner(org.apache.sshd.common.Factory<org.apache.sshd.common.random.Random> randomFactory)
                throws java.security.GeneralSecurityException

Throws:

java.security.GeneralSecurityException

Method Detail

engineSetParameter

@Deprecated
protected void engineSetParameter(java.lang.String key,
                                  java.lang.Object param)

Deprecated.

Specified by:

engineSetParameter in class java.security.SignatureSpi

engineGetParameter

@Deprecated
protected java.lang.Object engineGetParameter(java.lang.String key)

Deprecated.

Specified by:

engineGetParameter in class java.security.SignatureSpi

initDSAParameters

protected void initDSAParameters(java.security.interfaces.DSAKey key)
                          throws java.security.InvalidKeyException

Throws:

java.security.InvalidKeyException

engineInitSign

protected void engineInitSign(java.security.PrivateKey key)
                       throws java.security.InvalidKeyException

Specified by:

engineInitSign in class java.security.SignatureSpi

Throws:

java.security.InvalidKeyException

engineSign

protected byte[] engineSign()
                     throws java.security.SignatureException

Specified by:

engineSign in class java.security.SignatureSpi

Throws:

java.security.SignatureException

generateK

protected java.math.BigInteger generateK(java.math.BigInteger q)

generateR

protected java.math.BigInteger generateR(java.math.BigInteger p,
                                         java.math.BigInteger q,
                                         java.math.BigInteger g,
                                         java.math.BigInteger k)

generateS

protected java.math.BigInteger generateS(java.math.BigInteger x,
                                         java.math.BigInteger q,
                                         java.math.BigInteger r,
                                         java.math.BigInteger k)

engineInitVerify

protected void engineInitVerify(java.security.PublicKey key)
                         throws java.security.InvalidKeyException

Specified by:

engineInitVerify in class java.security.SignatureSpi

Throws:

java.security.InvalidKeyException

engineVerify

protected boolean engineVerify(byte[] signature)
                        throws java.security.SignatureException

Specified by:

engineVerify in class java.security.SignatureSpi

Throws:

java.security.SignatureException

engineVerify

protected boolean engineVerify(byte[] signature,
                               int offset,
                               int length)
                        throws java.security.SignatureException

Overrides:

engineVerify in class java.security.SignatureSpi

Throws:

java.security.SignatureException

generateW

protected java.math.BigInteger generateW(java.math.BigInteger p,
                                         java.math.BigInteger q,
                                         java.math.BigInteger g,
                                         java.math.BigInteger s)

generateV

protected java.math.BigInteger generateV(java.math.BigInteger y,
                                         java.math.BigInteger p,
                                         java.math.BigInteger q,
                                         java.math.BigInteger g,
                                         java.math.BigInteger w,
                                         java.math.BigInteger r)

engineUpdate

protected void engineUpdate(byte b)

Specified by:

engineUpdate in class java.security.SignatureSpi

engineUpdate

protected void engineUpdate(byte[] data,
                            int off,
                            int len)

Specified by:

engineUpdate in class java.security.SignatureSpi

engineUpdate

protected void engineUpdate(java.nio.ByteBuffer b)

Overrides:

engineUpdate in class java.security.SignatureSpi