java.security.interfaces.DSAKey Java Examples

The following examples show how to use java.security.interfaces.DSAKey. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: SignatureDSA.java    From jdk1.8-source-analysis with Apache License 2.0 6 votes vote down vote up 
/**
 * @inheritDoc
 */
protected void engineInitSign(Key privateKey, SecureRandom secureRandom)
    throws XMLSignatureException {
    if (!(privateKey instanceof PrivateKey)) {
        String supplied = privateKey.getClass().getName();
        String needed = PrivateKey.class.getName();
        Object exArgs[] = { supplied, needed };

        throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
    }

    try {
        this.signatureAlgorithm.initSign((PrivateKey) privateKey, secureRandom);
    } catch (InvalidKeyException ex) {
        throw new XMLSignatureException("empty", ex);
    }
    size = ((DSAKey)privateKey).getParams().getQ().bitLength();
}
Example #2
Source File: SignatureDSA.java    From openjdk-jdk9 with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * @inheritDoc
 */
protected void engineInitSign(Key privateKey, SecureRandom secureRandom)
    throws XMLSignatureException {
    if (!(privateKey instanceof PrivateKey)) {
        String supplied = privateKey.getClass().getName();
        String needed = PrivateKey.class.getName();
        Object exArgs[] = { supplied, needed };

        throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
    }

    try {
        this.signatureAlgorithm.initSign((PrivateKey) privateKey, secureRandom);
    } catch (InvalidKeyException ex) {
        throw new XMLSignatureException("empty", ex);
    }
    size = ((DSAKey)privateKey).getParams().getQ().bitLength();
}
Example #3
Source File: SignatureDSA.java    From openjdk-jdk9 with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * @inheritDoc
 */
protected void engineInitSign(Key privateKey) throws XMLSignatureException {
    if (!(privateKey instanceof PrivateKey)) {
        String supplied = privateKey.getClass().getName();
        String needed = PrivateKey.class.getName();
        Object exArgs[] = { supplied, needed };

        throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
    }

    try {
        this.signatureAlgorithm.initSign((PrivateKey) privateKey);
    } catch (InvalidKeyException ex) {
        throw new XMLSignatureException("empty", ex);
    }
    size = ((DSAKey)privateKey).getParams().getQ().bitLength();
}
Example #4
Source File: KeyPairUtil.java    From portecle with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * Get the key size of a public key.
 *
 * @param pubKey The public key
 * @return The key size, {@link #UNKNOWN_KEY_SIZE} if not known
 */
public static int getKeyLength(PublicKey pubKey)
{
	if (pubKey instanceof RSAKey)
	{
		return ((RSAKey) pubKey).getModulus().bitLength();
	}
	else if (pubKey instanceof DSAKey)
	{
		return ((DSAKey) pubKey).getParams().getP().bitLength();
	}
	else if (pubKey instanceof DHKey)
	{
		return ((DHKey) pubKey).getParams().getP().bitLength();
	}
	else if (pubKey instanceof ECKey)
	{
		// TODO: how to get key size from these?
		return UNKNOWN_KEY_SIZE;
	}

	LOG.warning("Don't know how to get key size from key " + pubKey);
	return UNKNOWN_KEY_SIZE;
}
Example #5
Source File: SignatureDSA.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * @inheritDoc
 */
protected void engineInitSign(Key privateKey) throws XMLSignatureException {
    if (!(privateKey instanceof PrivateKey)) {
        String supplied = privateKey.getClass().getName();
        String needed = PrivateKey.class.getName();
        Object exArgs[] = { supplied, needed };

        throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
    }

    try {
        this.signatureAlgorithm.initSign((PrivateKey) privateKey);
    } catch (InvalidKeyException ex) {
        throw new XMLSignatureException("empty", ex);
    }
    size = ((DSAKey)privateKey).getParams().getQ().bitLength();
}
Example #6
Source File: SignatureDSA.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * @inheritDoc
 */
protected void engineInitSign(Key privateKey, SecureRandom secureRandom)
    throws XMLSignatureException {
    if (!(privateKey instanceof PrivateKey)) {
        String supplied = privateKey.getClass().getName();
        String needed = PrivateKey.class.getName();
        Object exArgs[] = { supplied, needed };

        throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
    }

    try {
        this.signatureAlgorithm.initSign((PrivateKey) privateKey, secureRandom);
    } catch (InvalidKeyException ex) {
        throw new XMLSignatureException("empty", ex);
    }
    size = ((DSAKey)privateKey).getParams().getQ().bitLength();
}
Example #7
Source File: SignatureDSA.java    From jdk8u-jdk with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * @inheritDoc
 */
protected void engineInitSign(Key privateKey, SecureRandom secureRandom)
    throws XMLSignatureException {
    if (!(privateKey instanceof PrivateKey)) {
        String supplied = privateKey.getClass().getName();
        String needed = PrivateKey.class.getName();
        Object exArgs[] = { supplied, needed };

        throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
    }

    try {
        this.signatureAlgorithm.initSign((PrivateKey) privateKey, secureRandom);
    } catch (InvalidKeyException ex) {
        throw new XMLSignatureException("empty", ex);
    }
    size = ((DSAKey)privateKey).getParams().getQ().bitLength();
}
Example #8
Source File: SignatureDSA.java    From jdk8u-jdk with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * @inheritDoc
 */
protected void engineInitSign(Key privateKey) throws XMLSignatureException {
    if (!(privateKey instanceof PrivateKey)) {
        String supplied = privateKey.getClass().getName();
        String needed = PrivateKey.class.getName();
        Object exArgs[] = { supplied, needed };

        throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
    }

    try {
        this.signatureAlgorithm.initSign((PrivateKey) privateKey);
    } catch (InvalidKeyException ex) {
        throw new XMLSignatureException("empty", ex);
    }
    size = ((DSAKey)privateKey).getParams().getQ().bitLength();
}
Example #9
Source File: SignatureDSA.java    From openjdk-jdk8u with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * @inheritDoc
 */
protected void engineInitSign(Key privateKey) throws XMLSignatureException {
    if (!(privateKey instanceof PrivateKey)) {
        String supplied = privateKey.getClass().getName();
        String needed = PrivateKey.class.getName();
        Object exArgs[] = { supplied, needed };

        throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
    }

    try {
        this.signatureAlgorithm.initSign((PrivateKey) privateKey);
    } catch (InvalidKeyException ex) {
        throw new XMLSignatureException("empty", ex);
    }
    size = ((DSAKey)privateKey).getParams().getQ().bitLength();
}
Example #10
Source File: SignatureDSA.java    From openjdk-jdk8u with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * @inheritDoc
 */
protected void engineInitSign(Key privateKey, SecureRandom secureRandom)
    throws XMLSignatureException {
    if (!(privateKey instanceof PrivateKey)) {
        String supplied = privateKey.getClass().getName();
        String needed = PrivateKey.class.getName();
        Object exArgs[] = { supplied, needed };

        throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
    }

    try {
        this.signatureAlgorithm.initSign((PrivateKey) privateKey, secureRandom);
    } catch (InvalidKeyException ex) {
        throw new XMLSignatureException("empty", ex);
    }
    size = ((DSAKey)privateKey).getParams().getQ().bitLength();
}
Example #11
Source File: SignatureDSA.java    From hottub with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * @inheritDoc
 */
protected void engineInitSign(Key privateKey, SecureRandom secureRandom)
    throws XMLSignatureException {
    if (!(privateKey instanceof PrivateKey)) {
        String supplied = privateKey.getClass().getName();
        String needed = PrivateKey.class.getName();
        Object exArgs[] = { supplied, needed };

        throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
    }

    try {
        this.signatureAlgorithm.initSign((PrivateKey) privateKey, secureRandom);
    } catch (InvalidKeyException ex) {
        throw new XMLSignatureException("empty", ex);
    }
    size = ((DSAKey)privateKey).getParams().getQ().bitLength();
}
Example #12
Source File: SignatureDSA.java    From hottub with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * @inheritDoc
 */
protected void engineInitSign(Key privateKey) throws XMLSignatureException {
    if (!(privateKey instanceof PrivateKey)) {
        String supplied = privateKey.getClass().getName();
        String needed = PrivateKey.class.getName();
        Object exArgs[] = { supplied, needed };

        throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
    }

    try {
        this.signatureAlgorithm.initSign((PrivateKey) privateKey);
    } catch (InvalidKeyException ex) {
        throw new XMLSignatureException("empty", ex);
    }
    size = ((DSAKey)privateKey).getParams().getQ().bitLength();
}
Example #13
Source File: SignatureDSA.java    From JDKSourceCode1.8 with MIT License 6 votes vote down vote up 
/**
 * @inheritDoc
 */
protected void engineInitSign(Key privateKey) throws XMLSignatureException {
    if (!(privateKey instanceof PrivateKey)) {
        String supplied = privateKey.getClass().getName();
        String needed = PrivateKey.class.getName();
        Object exArgs[] = { supplied, needed };

        throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
    }

    try {
        this.signatureAlgorithm.initSign((PrivateKey) privateKey);
    } catch (InvalidKeyException ex) {
        throw new XMLSignatureException("empty", ex);
    }
    size = ((DSAKey)privateKey).getParams().getQ().bitLength();
}
Example #14
Source File: SignatureDSA.java    From JDKSourceCode1.8 with MIT License 6 votes vote down vote up 
/**
 * @inheritDoc
 */
protected void engineInitSign(Key privateKey, SecureRandom secureRandom)
    throws XMLSignatureException {
    if (!(privateKey instanceof PrivateKey)) {
        String supplied = privateKey.getClass().getName();
        String needed = PrivateKey.class.getName();
        Object exArgs[] = { supplied, needed };

        throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
    }

    try {
        this.signatureAlgorithm.initSign((PrivateKey) privateKey, secureRandom);
    } catch (InvalidKeyException ex) {
        throw new XMLSignatureException("empty", ex);
    }
    size = ((DSAKey)privateKey).getParams().getQ().bitLength();
}
Example #15
Source File: SignatureDSA.java    From jdk8u_jdk with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * @inheritDoc
 */
protected void engineInitSign(Key privateKey, SecureRandom secureRandom)
    throws XMLSignatureException {
    if (!(privateKey instanceof PrivateKey)) {
        String supplied = privateKey.getClass().getName();
        String needed = PrivateKey.class.getName();
        Object exArgs[] = { supplied, needed };

        throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
    }

    try {
        this.signatureAlgorithm.initSign((PrivateKey) privateKey, secureRandom);
    } catch (InvalidKeyException ex) {
        throw new XMLSignatureException("empty", ex);
    }
    size = ((DSAKey)privateKey).getParams().getQ().bitLength();
}
Example #16
Source File: SignatureDSA.java    From jdk8u_jdk with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * @inheritDoc
 */
protected void engineInitSign(Key privateKey) throws XMLSignatureException {
    if (!(privateKey instanceof PrivateKey)) {
        String supplied = privateKey.getClass().getName();
        String needed = PrivateKey.class.getName();
        Object exArgs[] = { supplied, needed };

        throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
    }

    try {
        this.signatureAlgorithm.initSign((PrivateKey) privateKey);
    } catch (InvalidKeyException ex) {
        throw new XMLSignatureException("empty", ex);
    }
    size = ((DSAKey)privateKey).getParams().getQ().bitLength();
}
Example #17
Source File: SignatureDSA.java    From TencentKona-8 with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * @inheritDoc
 */
protected void engineInitSign(Key privateKey) throws XMLSignatureException {
    if (!(privateKey instanceof PrivateKey)) {
        String supplied = privateKey.getClass().getName();
        String needed = PrivateKey.class.getName();
        Object exArgs[] = { supplied, needed };

        throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
    }

    try {
        this.signatureAlgorithm.initSign((PrivateKey) privateKey);
    } catch (InvalidKeyException ex) {
        throw new XMLSignatureException("empty", ex);
    }
    size = ((DSAKey)privateKey).getParams().getQ().bitLength();
}
Example #18
Source File: SignatureDSA.java    From TencentKona-8 with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * @inheritDoc
 */
protected void engineInitSign(Key privateKey, SecureRandom secureRandom)
    throws XMLSignatureException {
    if (!(privateKey instanceof PrivateKey)) {
        String supplied = privateKey.getClass().getName();
        String needed = PrivateKey.class.getName();
        Object exArgs[] = { supplied, needed };

        throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
    }

    try {
        this.signatureAlgorithm.initSign((PrivateKey) privateKey, secureRandom);
    } catch (InvalidKeyException ex) {
        throw new XMLSignatureException("empty", ex);
    }
    size = ((DSAKey)privateKey).getParams().getQ().bitLength();
}
Example #19
Source File: KeyPairUtil.java    From MaxKey with Apache License 2.0 6 votes vote down vote up 
/**
 * Get the key size of a public key.
 * 
 * @param pubKey The public key
 * @return The key size, {@link #UNKNOWN_KEY_SIZE} if not known
 */
public static int getKeyLength(PublicKey pubKey)
{
	if (pubKey instanceof RSAKey)
	{
		return ((RSAKey) pubKey).getModulus().bitLength();
	}
	else if (pubKey instanceof DSAKey)
	{
		return ((DSAKey) pubKey).getParams().getP().bitLength();
	}
	else if (pubKey instanceof DHKey)
	{
		return ((DHKey) pubKey).getParams().getP().bitLength();
	}
	else if (pubKey instanceof ECKey)
	{
		// TODO: how to get key size from these?
		return UNKNOWN_KEY_SIZE;
	}

	_logger.warn("Don't know how to get key size from key " + pubKey);
	return UNKNOWN_KEY_SIZE;
}
Example #20
Source File: SignatureDSA.java    From jdk1.8-source-analysis with Apache License 2.0 6 votes vote down vote up 
/**
 * @inheritDoc
 */
protected void engineInitSign(Key privateKey) throws XMLSignatureException {
    if (!(privateKey instanceof PrivateKey)) {
        String supplied = privateKey.getClass().getName();
        String needed = PrivateKey.class.getName();
        Object exArgs[] = { supplied, needed };

        throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
    }

    try {
        this.signatureAlgorithm.initSign((PrivateKey) privateKey);
    } catch (InvalidKeyException ex) {
        throw new XMLSignatureException("empty", ex);
    }
    size = ((DSAKey)privateKey).getParams().getQ().bitLength();
}
Example #21
Source File: SignatureDSA.java    From dragonwell8_jdk with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * @inheritDoc
 */
protected void engineInitSign(Key privateKey) throws XMLSignatureException {
    if (!(privateKey instanceof PrivateKey)) {
        String supplied = privateKey.getClass().getName();
        String needed = PrivateKey.class.getName();
        Object exArgs[] = { supplied, needed };

        throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
    }

    try {
        this.signatureAlgorithm.initSign((PrivateKey) privateKey);
    } catch (InvalidKeyException ex) {
        throw new XMLSignatureException("empty", ex);
    }
    size = ((DSAKey)privateKey).getParams().getQ().bitLength();
}
Example #22
Source File: SignatureDSA.java    From dragonwell8_jdk with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * @inheritDoc
 */
protected void engineInitSign(Key privateKey, SecureRandom secureRandom)
    throws XMLSignatureException {
    if (!(privateKey instanceof PrivateKey)) {
        String supplied = privateKey.getClass().getName();
        String needed = PrivateKey.class.getName();
        Object exArgs[] = { supplied, needed };

        throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
    }

    try {
        this.signatureAlgorithm.initSign((PrivateKey) privateKey, secureRandom);
    } catch (InvalidKeyException ex) {
        throw new XMLSignatureException("empty", ex);
    }
    size = ((DSAKey)privateKey).getParams().getQ().bitLength();
}
Example #23
Source File: DSASigner.java    From ripple-lib-java with ISC License 5 votes vote down vote up 
protected void engineInitVerify(
    PublicKey   publicKey)
    throws InvalidKeyException
{
    CipherParameters    param;

    if (publicKey instanceof DSAKey)
    {
        param = DSAUtil.generatePublicKeyParameter(publicKey);
    }
    else
    {
        try
        {
            byte[]  bytes = publicKey.getEncoded();

            publicKey = new BCDSAPublicKey(SubjectPublicKeyInfo.getInstance(bytes));

            if (publicKey instanceof DSAKey)
            {
                param = DSAUtil.generatePublicKeyParameter(publicKey);
            }
            else
            {
                throw new InvalidKeyException("can't recognise key type in DSA based signer");
            }
        }
        catch (Exception e)
        {
            throw new InvalidKeyException("can't recognise key type in DSA based signer");
        }
    }

    digest.reset();
    signer.init(false, param);
}
Example #24
Source File: SignatureDSA.java    From jdk1.8-source-analysis with Apache License 2.0 5 votes vote down vote up 
/**
 * @inheritDoc
 */
protected void engineInitVerify(Key publicKey) throws XMLSignatureException {
    if (!(publicKey instanceof PublicKey)) {
        String supplied = publicKey.getClass().getName();
        String needed = PublicKey.class.getName();
        Object exArgs[] = { supplied, needed };

        throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
    }

    try {
        this.signatureAlgorithm.initVerify((PublicKey) publicKey);
    } catch (InvalidKeyException ex) {
        // reinstantiate Signature object to work around bug in JDK
        // see: http://bugs.sun.com/view_bug.do?bug_id=4953555
        Signature sig = this.signatureAlgorithm;
        try {
            this.signatureAlgorithm = Signature.getInstance(signatureAlgorithm.getAlgorithm());
        } catch (Exception e) {
            // this shouldn't occur, but if it does, restore previous
            // Signature
            if (log.isLoggable(java.util.logging.Level.FINE)) {
                log.log(java.util.logging.Level.FINE, "Exception when reinstantiating Signature:" + e);
            }
            this.signatureAlgorithm = sig;
        }
        throw new XMLSignatureException("empty", ex);
    }
    size = ((DSAKey)publicKey).getParams().getQ().bitLength();
}
Example #25
Source File: AndroidKeyStore.java    From android-chromium with BSD 2-Clause "Simplified" License 5 votes vote down vote up 
/**
 * Returns the 'Q' parameter of a given DSA private key as a byte
 * buffer.
 * This can be used by native code to convert it into an OpenSSL BIGNUM
 * object where DSA_size() works as expected.
 *
 * @param key A PrivateKey instance. Must implement DSAKey.
 * @return A byte buffer corresponding to the Q parameter. This is
 * a big-endian representation of a BigInteger.
 */
@CalledByNative
public static byte[] getDSAKeyParamQ(PrivateKey key) {
    if (key instanceof DSAKey) {
        DSAParams params = ((DSAKey) key).getParams();
        return params.getQ().toByteArray();
    } else {
        Log.w(TAG, "Not a DSAKey instance!");
        return null;
    }
}
Example #26
Source File: AndroidKeyStore.java    From android-chromium with BSD 2-Clause "Simplified" License 5 votes vote down vote up 
/**
 * Returns the 'Q' parameter of a given DSA private key as a byte
 * buffer.
 * This can be used by native code to convert it into an OpenSSL BIGNUM
 * object where DSA_size() works as expected.
 *
 * @param key A PrivateKey instance. Must implement DSAKey.
 * @return A byte buffer corresponding to the Q parameter. This is
 * a big-endian representation of a BigInteger.
 */
@CalledByNative
public static byte[] getDSAKeyParamQ(PrivateKey key) {
    if (key instanceof DSAKey) {
        DSAParams params = ((DSAKey) key).getParams();
        return params.getQ().toByteArray();
    } else {
        Log.w(TAG, "Not a DSAKey instance!");
        return null;
    }
}
Example #27
Source File: SignatureDSA.java    From jdk8u-jdk with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * @inheritDoc
 */
protected void engineInitVerify(Key publicKey) throws XMLSignatureException {
    if (!(publicKey instanceof PublicKey)) {
        String supplied = publicKey.getClass().getName();
        String needed = PublicKey.class.getName();
        Object exArgs[] = { supplied, needed };

        throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
    }

    try {
        this.signatureAlgorithm.initVerify((PublicKey) publicKey);
    } catch (InvalidKeyException ex) {
        // reinstantiate Signature object to work around bug in JDK
        // see: http://bugs.sun.com/view_bug.do?bug_id=4953555
        Signature sig = this.signatureAlgorithm;
        try {
            this.signatureAlgorithm = Signature.getInstance(signatureAlgorithm.getAlgorithm());
        } catch (Exception e) {
            // this shouldn't occur, but if it does, restore previous
            // Signature
            if (log.isLoggable(java.util.logging.Level.FINE)) {
                log.log(java.util.logging.Level.FINE, "Exception when reinstantiating Signature:" + e);
            }
            this.signatureAlgorithm = sig;
        }
        throw new XMLSignatureException("empty", ex);
    }
    size = ((DSAKey)publicKey).getParams().getQ().bitLength();
}
Example #28
Source File: DSASigner.java    From RipplePower with Apache License 2.0 5 votes vote down vote up 
protected void engineInitVerify(
    PublicKey   publicKey)
    throws InvalidKeyException
{
    CipherParameters    param;

    if (publicKey instanceof DSAKey)
    {
        param = DSAUtil.generatePublicKeyParameter(publicKey);
    }
    else
    {
        try
        {
            byte[]  bytes = publicKey.getEncoded();

            publicKey = new BCDSAPublicKey(SubjectPublicKeyInfo.getInstance(bytes));

            if (publicKey instanceof DSAKey)
            {
                param = DSAUtil.generatePublicKeyParameter(publicKey);
            }
            else
            {
                throw new InvalidKeyException("can't recognise key type in DSA based signer");
            }
        }
        catch (Exception e)
        {
            throw new InvalidKeyException("can't recognise key type in DSA based signer");
        }
    }

    digest.reset();
    signer.init(false, param);
}
Example #29
Source File: EncryptionUtil.java    From AndroidHttpCapture with MIT License 5 votes vote down vote up 
/**
 * Returns the type of digital signature used with the specified signing key.
 *
 * @param signingKey private key that will be used to sign a certificate (or something else)
 * @return a string representing the digital signature type (ECDSA, RSA, etc.)
 */
public static String getDigitalSignatureType(Key signingKey) {
    if (signingKey instanceof ECKey) {
        return "ECDSA";
    } else if (signingKey instanceof RSAKey) {
        return "RSA";
    } else if (signingKey instanceof DSAKey) {
        return "DSA";
    } else {
        throw new IllegalArgumentException("Cannot determine digital signature encryption type for unknown key type: " + signingKey.getClass().getCanonicalName());
    }

}
Example #30
Source File: SignatureDSA.java    From hottub with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * @inheritDoc
 */
protected void engineInitVerify(Key publicKey) throws XMLSignatureException {
    if (!(publicKey instanceof PublicKey)) {
        String supplied = publicKey.getClass().getName();
        String needed = PublicKey.class.getName();
        Object exArgs[] = { supplied, needed };

        throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
    }

    try {
        this.signatureAlgorithm.initVerify((PublicKey) publicKey);
    } catch (InvalidKeyException ex) {
        // reinstantiate Signature object to work around bug in JDK
        // see: http://bugs.sun.com/view_bug.do?bug_id=4953555
        Signature sig = this.signatureAlgorithm;
        try {
            this.signatureAlgorithm = Signature.getInstance(signatureAlgorithm.getAlgorithm());
        } catch (Exception e) {
            // this shouldn't occur, but if it does, restore previous
            // Signature
            if (log.isLoggable(java.util.logging.Level.FINE)) {
                log.log(java.util.logging.Level.FINE, "Exception when reinstantiating Signature:" + e);
            }
            this.signatureAlgorithm = sig;
        }
        throw new XMLSignatureException("empty", ex);
    }
    size = ((DSAKey)publicKey).getParams().getQ().bitLength();
}