Example usage for java.security PrivateKey getAlgorithm

Introduction

In this page you can find the example usage for java.security PrivateKey getAlgorithm.

Prototype

public String getAlgorithm();

Source Link

Document

Returns the standard algorithm name for this key.

Usage

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    MainClass kpge = new MainClass();
    KeyPair kp = kpge.generateKeyPair(999);
    System.out.println("\n-- Private Key ----");
    PrivateKey priKey = kp.getPrivate();
    System.out.println("   Algorithm=" + priKey.getAlgorithm());
    System.out.println("   Encoded=" + priKey.getEncoded());
    System.out.println("   Format=" + priKey.getFormat());
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DSA");
    keyGen.initialize(1024);/* ww  w  .j a va 2s  .  co  m*/
    KeyPair keypair = keyGen.genKeyPair();
    DSAPrivateKey privateKey = (DSAPrivateKey) keypair.getPrivate();
    DSAPublicKey publicKey = (DSAPublicKey) keypair.getPublic();

    DSAParams dsaParams = privateKey.getParams();
    BigInteger p = dsaParams.getP();
    BigInteger q = dsaParams.getQ();
    BigInteger g = dsaParams.getG();
    BigInteger x = privateKey.getX();
    BigInteger y = publicKey.getY();

    // Create the DSA key factory
    KeyFactory keyFactory = KeyFactory.getInstance("DSA");
    // Create the DSA private key
    KeySpec privateKeySpec = new DSAPrivateKeySpec(x, p, q, g);
    PrivateKey privateKey1 = keyFactory.generatePrivate(privateKeySpec);

    byte[] buffer = new byte[1024];

    Signature sig = Signature.getInstance(privateKey1.getAlgorithm());
    sig.initSign(privateKey1);
    sig.update(buffer, 0, buffer.length);
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DSA");
    keyGen.initialize(1024);/*from  ww w  .j  a  va  2  s .  c  o  m*/
    KeyPair keypair = keyGen.genKeyPair();
    PrivateKey privateKey = keypair.getPrivate();
    PublicKey publicKey = keypair.getPublic();

    Serializable o = new MyClass();
    Signature sig = Signature.getInstance(privateKey.getAlgorithm());
    SignedObject so = new SignedObject(o, privateKey, sig);

    sig = Signature.getInstance(publicKey.getAlgorithm());
    boolean b = so.verify(publicKey, sig);
    o = (MyClass) so.getObject();
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DSA");
    keyGen.initialize(1024);/*  w ww  .j  a  va  2 s .  c o m*/
    KeyPair keypair = keyGen.genKeyPair();
    DSAPrivateKey privateKey = (DSAPrivateKey) keypair.getPrivate();
    DSAPublicKey publicKey = (DSAPublicKey) keypair.getPublic();

    DSAParams dsaParams = privateKey.getParams();
    BigInteger p = dsaParams.getP();
    BigInteger q = dsaParams.getQ();
    BigInteger g = dsaParams.getG();
    BigInteger x = privateKey.getX();
    BigInteger y = publicKey.getY();

    KeyFactory keyFactory = KeyFactory.getInstance("DSA");
    KeySpec publicKeySpec = new DSAPublicKeySpec(y, p, q, g);
    PublicKey publicKey1 = keyFactory.generatePublic(publicKeySpec);
    KeySpec privateKeySpec = new DSAPrivateKeySpec(x, p, q, g);
    PrivateKey privateKey1 = keyFactory.generatePrivate(privateKeySpec);

    byte[] buffer = new byte[1024];

    Signature sig = Signature.getInstance(privateKey1.getAlgorithm());
    sig.initSign(privateKey1);
    sig.update(buffer, 0, buffer.length);

    byte[] signature = sig.sign();

    sig = Signature.getInstance(publicKey1.getAlgorithm());
    sig.initVerify(publicKey1);
    sig.update(buffer, 0, buffer.length);
    sig.verify(signature);

}

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From source file:prototype.samples.ExternalSigning.java

/**
 * External signing example/*from   ww w.jav  a2 s.  c  om*/
 */
public static void main(String[] args) throws Exception {
    System.setProperty("digidoc4j.mode", "TEST");
    Configuration configuration = new Configuration(Configuration.Mode.TEST);
    Container container = ContainerBuilder.aContainer().withConfiguration(configuration)
            .withDataFile("testFiles/test.txt", "text/plain").build();

    SignatureToken externalSigner = new ExternalSigner(getSignerCert()) {
        @Override
        public byte[] sign(DigestAlgorithm digestAlgorithm, byte[] dataToSign) {

            // IMPLEMENT YOUR EXTERNAL SIGNING HERE

            try {
                KeyStore keyStore = KeyStore.getInstance("PKCS12");
                try (FileInputStream stream = new FileInputStream("testFiles/signout.p12")) {
                    keyStore.load(stream, "test".toCharArray());
                }
                PrivateKey privateKey = (PrivateKey) keyStore.getKey("1", "test".toCharArray());
                final String javaSignatureAlgorithm = "NONEwith" + privateKey.getAlgorithm();

                return AsyncSigning.encrypt(javaSignatureAlgorithm, privateKey, addPadding(dataToSign));
            } catch (Exception e) {
                throw new DigiDoc4JException("Loading private key failed");
            }
        }

        private byte[] addPadding(byte[] digest) {
            return ArrayUtils.addAll(SHA256.digestInfoPrefix(), digest);
        }
    };

    Signature signature = SignatureBuilder.aSignature(container).withSignatureToken(externalSigner)
            .invokeSigning();

    container.addSignature(signature);
    container.save("prototype.bdoc");
}

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From source file:org.digidoc4j.testutils.TestSigningHelper.java

public static byte[] sign(byte[] dataToSign, DigestAlgorithm digestAlgorithm) {
    try {//from www  . ja v  a2 s.c om
        KeyStore keyStore = KeyStore.getInstance("PKCS12");
        try (FileInputStream stream = new FileInputStream("testFiles/signout.p12")) {
            keyStore.load(stream, "test".toCharArray());
        }
        PrivateKey privateKey = (PrivateKey) keyStore.getKey("1", "test".toCharArray());
        final String javaSignatureAlgorithm = "NONEwith" + privateKey.getAlgorithm();

        return AsyncSigning.encrypt(javaSignatureAlgorithm, privateKey,
                addPadding(dataToSign, digestAlgorithm));
    } catch (Exception e) {
        throw new DigiDoc4JException("Loading private key failed");
    }
}

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From source file:hh.learnj.test.license.test.rsa.RSATest.java

/**
 * ?//from  w  w  w  .  ja  va2s .c om
 * 
 * @param target
 * @throws Exception
 */
static void decryptionByPrivateKey(String target) throws Exception {
    PrivateKey privateKey = getPrivateKey();
    Cipher cipher = Cipher.getInstance(privateKey.getAlgorithm());
    cipher.init(Cipher.DECRYPT_MODE, privateKey);
    cipher.update(decodeBase64(target));
    String source = new String(cipher.doFinal(), "UTF-8");
    System.out.println("???\r\n" + source);
}

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From source file:hh.learnj.test.license.test.rsa.RSATest.java

/**
 * ?/*from ww  w . ja v a2  s. c o  m*/
 * 
 * @param data
 * @return
 * @throws Exception
 */
static String encryptionByPrivateKey(String source) throws Exception {
    PrivateKey privateKey = getPrivateKey();
    Cipher cipher = Cipher.getInstance(privateKey.getAlgorithm());
    cipher.init(Cipher.ENCRYPT_MODE, privateKey);
    cipher.update(source.getBytes("UTF-8"));
    String target = encodeBase64(cipher.doFinal());
    System.out.println("???\r\n" + target);
    return target;
}

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From source file:ee.sk.hwcrypto.demo.signature.TestSigningData.java

private static byte[] sign(byte[] dataToSign, DigestAlgorithm digestAlgorithm) {
    try {/*from   www .  j  a  v a 2  s.c  o  m*/
        KeyStore keyStore = KeyStore.getInstance("PKCS12");
        try (FileInputStream stream = new FileInputStream(TEST_PKI_CONTAINER)) {
            keyStore.load(stream, TEST_PKI_CONTAINER_PASSWORD.toCharArray());
        }
        PrivateKey privateKey = (PrivateKey) keyStore.getKey("1", TEST_PKI_CONTAINER_PASSWORD.toCharArray());
        final String javaSignatureAlgorithm = "NONEwith" + privateKey.getAlgorithm();

        return encrypt(javaSignatureAlgorithm, privateKey, addPadding(dataToSign, digestAlgorithm));
    } catch (Exception e) {
        throw new DigiDoc4JException("Loading private key failed");
    }
}

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From source file:prototype.samples.AsyncSigning.java

private static byte[] getExternalSignature(X509Certificate signerCert, DataToSign dataToSign) {
    SignatureToken externalSigner = new ExternalSigner(signerCert) {
        @Override//from w  w w .j  a va  2  s  .  c  om
        public byte[] sign(DigestAlgorithm digestAlgorithm, byte[] dataToSign) {
            try {
                KeyStore keyStore = KeyStore.getInstance("PKCS12");
                try (FileInputStream stream = new FileInputStream("testFiles/signout.p12")) {
                    keyStore.load(stream, "test".toCharArray());
                }
                PrivateKey privateKey = (PrivateKey) keyStore.getKey("1", "test".toCharArray());
                final String javaSignatureAlgorithm = "NONEwith" + privateKey.getAlgorithm();

                return encrypt(javaSignatureAlgorithm, privateKey, addPadding(dataToSign));
            } catch (Exception e) {
                throw new DigiDoc4JException("Loading private key failed");
            }
        }

        private byte[] addPadding(byte[] digest) {
            return ArrayUtils.addAll(SHA256.digestInfoPrefix(), digest);
        }

    };

    return externalSigner.sign(dataToSign.getDigestAlgorithm(), dataToSign.getDigestToSign());
}

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