Java Security類代碼示例

import java.security.Security; //導入依賴的package包/類
public static void main(String[] args) throws Exception {
    // reserve the security properties
    String reservedSSFacProvider =
        Security.getProperty("ssl.ServerSocketFactory.provider");

    try {
        Security.setProperty("ssl.ServerSocketFactory.provider", "oops");
        ServerSocketFactory ssocketFactory =
                    SSLServerSocketFactory.getDefault();
        SSLServerSocket sslServerSocket =
                    (SSLServerSocket)ssocketFactory.createServerSocket();
    } catch (Exception e) {
        if (!(e.getCause() instanceof ClassNotFoundException)) {
            throw e;
        }
        // get the expected exception
    } finally {
        // restore the security properties
        if (reservedSSFacProvider == null) {
            reservedSSFacProvider = "";
        }
        Security.setProperty("ssl.ServerSocketFactory.provider",
                                                reservedSSFacProvider);
    }
}
 

import java.security.Security; //導入依賴的package包/類
public static void main(String[] args) throws Exception {
    Provider p = Security.getProvider("SunJCE");
    for (String alg : ALGORITHMS) {
        for (int keyStrength : KEY_STRENGTHS) {
            if (keyStrength > Cipher.getMaxAllowedKeyLength(alg)) {
                // skip this if this key length is larger than what's
                // configured in the JCE jurisdiction policy files
                continue;
            }
            for (int textLength : TEXT_LENGTHS) {
                for (int AADLength : AAD_LENGTHS) {
                    Encrypt test = new Encrypt(p, alg,
                            "GCM", "NoPadding", keyStrength, textLength,
                            AADLength);
                    Cipher cipher = test.createCipher(Cipher.ENCRYPT_MODE,
                            null);
                    AlgorithmParameters params = cipher.getParameters();
                    test.doTest(params);
                    System.out.println("Test " + alg + ":"
                            + keyStrength + ":" + textLength + ":"
                            + AADLength + " passed");
                }
            }
        }
    }
}
 

import java.security.Security; //導入依賴的package包/類
public static void main(String[] args) throws Exception {
    Provider provider = Security.getProvider("SunJCE");
    if (provider == null) {
        throw new RuntimeException("SunJCE provider not exist");
    }
    // generate no-padding cipher with secret key
    Cipher c = Cipher.getInstance("DES/CBC/NoPadding", provider);
    KeyGenerator kgen = KeyGenerator.getInstance("DES", provider);
    SecretKey skey = kgen.generateKey();
    // this is the improperly padded plaintext

    c.init(Cipher.ENCRYPT_MODE, skey);
    // encrypt plaintext
    byte[] cipher = c.doFinal(PLAIN_TEXT);
    AlgorithmParameters params = c.getParameters();
    // generate cipher that enforces PKCS5 padding
    c = Cipher.getInstance("DES/CBC/PKCS5Padding", provider);
    c.init(Cipher.DECRYPT_MODE, skey, params);
    try {
        c.doFinal(cipher);
        throw new RuntimeException(
                "ERROR: Expected BadPaddingException not thrown");
    } catch (BadPaddingException expected) {
        out.println("Expected BadPaddingException thrown");
    }

}
 

import java.security.Security; //導入依賴的package包/類
static void xRealmAuth() throws Exception {
    Security.setProperty("auth.login.defaultCallbackHandler", "CrossRealm");
    System.setProperty("java.security.auth.login.config", "jaas-localkdc.conf");
    System.setProperty("javax.security.auth.useSubjectCredsOnly", "false");
    FileOutputStream fos = new FileOutputStream("jaas-localkdc.conf");
    fos.write(("com.sun.security.jgss.krb5.initiate {\n" +
            "    com.sun.security.auth.module.Krb5LoginModule\n" +
            "    required\n" +
            "    principal=dummy\n" +
            "    doNotPrompt=false\n" +
            "    useTicketCache=false\n" +
            "    ;\n" +
            "};").getBytes());
    fos.close();

    GSSManager m = GSSManager.getInstance();
    m.createContext(
            m.createName("[email protected]", GSSName.NT_HOSTBASED_SERVICE),
            GSSUtil.GSS_KRB5_MECH_OID,
            null,
            GSSContext.DEFAULT_LIFETIME).initSecContext(new byte[0], 0, 0);
}
 

import java.security.Security; //導入依賴的package包/類
@Override
public void main(Provider p) throws Exception {

    /*
     * Use Solaris SPARC 11.2 or later to avoid an intermittent failure
     * when running SunPKCS11-Solaris (8044554)
     */
    if (p.getName().equals("SunPKCS11-Solaris") &&
        props.getProperty("os.name").equals("SunOS") &&
        props.getProperty("os.arch").equals("sparcv9") &&
        props.getProperty("os.version").compareTo("5.11") <= 0 &&
        getDistro().compareTo("11.2") < 0) {

        System.out.println("SunPKCS11-Solaris provider requires " +
            "Solaris SPARC 11.2 or later, skipping");
        return;
    }

    long start = System.currentTimeMillis();
    Providers.setAt(p, 1);
    try {
        String PROVIDER = p.getName();
        String javaHome = props.getProperty("java.home");
        String caCerts = javaHome + SEP + "lib" + SEP + "security" + SEP + "cacerts";
        KeyStore ks;
        try (InputStream in = new FileInputStream(caCerts)) {
            ks = KeyStore.getInstance(KeyStore.getDefaultType());
            ks.load(in, null);
        }
        for (Enumeration e = ks.aliases(); e.hasMoreElements(); ) {
            String alias = (String)e.nextElement();
            if (ks.isCertificateEntry(alias)) {
                System.out.println("* Testing " + alias + "...");
                X509Certificate cert = (X509Certificate)ks.getCertificate(alias);
                PublicKey key = cert.getPublicKey();
                String alg = key.getAlgorithm();
                if (alg.equals("RSA")) {
                    System.out.println("Signature algorithm: " + cert.getSigAlgName());
                    cert.verify(key, PROVIDER);
                } else {
                    System.out.println("Skipping cert with key: " + alg);
                }
            } else {
                System.out.println("Skipping alias " + alias);
            }
        }
        long stop = System.currentTimeMillis();
        System.out.println("All tests passed (" + (stop - start) + " ms).");
     } finally {
        Security.removeProvider(p.getName());
     }
}
 

import java.security.Security; //導入依賴的package包/類
public static b a(String str) {
    HttpParams basicHttpParams = new BasicHttpParams();
    HttpProtocolParams.setVersion(basicHttpParams, HttpVersion.HTTP_1_1);
    HttpProtocolParams.setUseExpectContinue(basicHttpParams, false);
    HttpConnectionParams.setStaleCheckingEnabled(basicHttpParams, false);
    HttpConnectionParams.setConnectionTimeout(basicHttpParams, 20000);
    HttpConnectionParams.setSoTimeout(basicHttpParams, 30000);
    HttpConnectionParams.setSocketBufferSize(basicHttpParams, 8192);
    HttpClientParams.setRedirecting(basicHttpParams, true);
    HttpClientParams.setAuthenticating(basicHttpParams, false);
    HttpProtocolParams.setUserAgent(basicHttpParams, str);
    SchemeRegistry schemeRegistry = new SchemeRegistry();
    schemeRegistry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
    schemeRegistry.register(new Scheme(com.alipay.sdk.cons.b.a, SSLCertificateSocketFactory.getHttpSocketFactory(30000, null), WebSocket.DEFAULT_WSS_PORT));
    ClientConnectionManager threadSafeClientConnManager = new ThreadSafeClientConnManager(basicHttpParams, schemeRegistry);
    ConnManagerParams.setTimeout(basicHttpParams, 60000);
    ConnManagerParams.setMaxConnectionsPerRoute(basicHttpParams, new ConnPerRouteBean(10));
    ConnManagerParams.setMaxTotalConnections(basicHttpParams, 50);
    Security.setProperty("networkaddress.cache.ttl", "-1");
    HttpsURLConnection.setDefaultHostnameVerifier(SSLSocketFactory.STRICT_HOSTNAME_VERIFIER);
    return new b(threadSafeClientConnManager, basicHttpParams);
}
 

import java.security.Security; //導入依賴的package包/類
private void run() throws Exception {
    Provider[] providers = Security.getProviders();
    for (Provider p : providers) {
        String prvName = p.getName();
        if (prvName.startsWith("SunJCE")
                || prvName.startsWith("SunPKCS11-")) {
            for (String algorithm : ALGORITHM_ARR) {
                if (!runTest(p, algorithm)) {
                    throw new RuntimeException(
                            "Test failed with provider/algorithm:"
                                    + p.getName() + "/" + algorithm);
                } else {
                    out.println("Test passed with provider/algorithm:"
                            + p.getName() + "/" + algorithm);
                }
            }
        }
    }
}
 

import java.security.Security; //導入依賴的package包/類
/**
 * 打jre中印算法提供者列表
 */
private static void printProviders() {
	log.info("Providers List:");
	Provider[] providers = Security.getProviders();
	for (int i = 0; i < providers.length; i++) {
		log.info(i + 1 + "." + providers[i].getName());
	}
}
 

import java.security.Security; //導入依賴的package包/類
private void runTest(String[] args) {
    if (!KeyStore.getDefaultType().
            equalsIgnoreCase(DEFAULT_KEY_STORE_TYPE)) {
        throw new RuntimeException(String.format("Default keystore type "
                + "Expected '%s' . Actual: '%s' ", DEFAULT_KEY_STORE_TYPE,
                KeyStore.getDefaultType()));
    }
    for (String ksDefaultType : KEY_STORE_TYPES) {
        Security.setProperty("keystore.type", ksDefaultType);
        if (!KeyStore.getDefaultType().equals(ksDefaultType)) {
            throw new RuntimeException(String.format(
                    "Keystore default type value: '%s' cannot be set up via"
                    + " keystore.type "
                    + "security property, Actual: '%s'",
                    ksDefaultType, KeyStore.getDefaultType()));
        }
    }
    out.println("Test Passed");
}
 

import java.security.Security; //導入依賴的package包/類
public static void main(String[] args) throws Exception {

        new OneKDC(null) {
            protected byte[] processAsReq(byte[] in) throws Exception {
                kdcTouched = true;
                return super.processAsReq(in);
            }
        }.writeJAASConf();
        Security.setProperty("auth.login.defaultCallbackHandler",
                "LoginNoPass$CallbackForClient");
        System.setProperty("javax.security.auth.useSubjectCredsOnly", "false");

        try {
            Context c;
            c = Context.fromJAAS("client");
            c.startAsClient(OneKDC.SERVER, GSSUtil.GSS_KRB5_MECH_OID);
            c.take(new byte[0]);
        } catch (Exception e) {
            e.printStackTrace(System.out);
            // OK
        }
        if (kdcTouched) {
            throw new Exception("Failed");
        }
    }
 

import java.security.Security; //導入依賴的package包/類
public static void main(String[] args) throws Exception {
    // reset the security property to make sure that the algorithms
    // and keys used in this test are not disabled.
    Security.setProperty("jdk.certpath.disabledAlgorithms", "MD2");
    Security.setProperty("jdk.tls.disabledAlgorithms",
            "SSLv3, RC4, DH keySize < 768");

    if (debug) {
        System.setProperty("javax.net.debug", "all");
    }

    /*
     * Get the customized arguments.
     */
    parseArguments(args);

    /*
     * Start the tests.
     */
    new ShortRSAKeyGCM();
}
 

import java.security.Security; //導入依賴的package包/類
static byte[] crypt(
    boolean encrypt,
    String provider,
    byte[] bytes,
    char[] password,
    String dekAlgName,
    byte[] iv)
    throws IOException
{
    Provider prov = null;
    if (provider != null)
    {
        prov = Security.getProvider(provider);
        if (prov == null)
        {
            throw new EncryptionException("cannot find provider: " + provider);
        }
    }

    return crypt(encrypt, prov, bytes, password, dekAlgName, iv);
}
 

import java.security.Security; //導入依賴的package包/類
public static void main(final String... args) throws IOException {
    if (args.length == 0) {
        System.out.println(USAGE);
        return;
    }

    Security.addProvider(new BouncyCastleProvider());

    try {
        execute(args);
    } catch (final RuntimeException e) {
        System.err.println(e.toString());
        e.printStackTrace(System.out);
        System.err.println(e.getMessage());
        System.exit(1);
    }
}
 

import java.security.Security; //導入依賴的package包/類
/**
 * Calls run(args[]).
 * exit(1) if the test fails.
 **/
public static void main(String args[]) throws Exception {
    Security.setProperty("jdk.tls.disabledAlgorithms", "");

    try {
        MAX_GET_FREE_PORT_TRIES = Integer.parseInt(System.getProperty("test.getfreeport.max.tries", "10"));
    } catch (NumberFormatException ex) {
    }

    RmiBootstrapTest manager = new RmiBootstrapTest();
    try {
        manager.run(args);
    } catch (RuntimeException r) {
        System.out.println("Test Failed: "+ r.getMessage());
        System.exit(1);
    } catch (Throwable t) {
        System.out.println("Test Failed: "+ t);
        t.printStackTrace();
        System.exit(2);
    }
    System.out.println("**** Test  RmiBootstrap Passed ****");
}
 

import java.security.Security; //導入依賴的package包/類
public static void main(String[] args) throws Exception {

		TestJCAProvider d = new TestJCAProvider();
		// Add dynamically the desired provider
		Security.addProvider(new PaillierProvider());
		
		/////////////////////////////////////////////////////////////////////
		KeyPairGenerator kpg = KeyPairGenerator.getInstance("Paillier");
		kpg.initialize(32);
		KeyPair keyPair = kpg.generateKeyPair();
		PublicKey pubKey = keyPair.getPublic();
		PrivateKey privKey = keyPair.getPrivate();
		final Cipher cipher = Cipher.getInstance("Paillier");
		final Cipher cipherHP = Cipher.getInstance("PaillierHP");
		System.out.println("The Paillier public key through Generator is \n"+keyPair.toString());
		System.out.println("The Paillier public key is \n"+keyPair.getPublic().toString());
		System.out.println("The Paillier private key is \n"+keyPair.getPrivate().toString());
		String plainText = "101";
		String plaintext1 = "101";
		// get the n
		String delims = "[,]";
		String[] keyComponents = pubKey.toString().split(delims);
		String keyComponent = "";
		for (String keyComponent2 : keyComponents) {
			if (keyComponent2.startsWith("n")) {
				keyComponent = keyComponent2.substring(2);// ignoring 'n:' or 'r:'
			}
		}
		BigInteger n = new BigInteger(keyComponent);
		BigInteger first = new BigInteger(plainText);
		BigInteger second = new BigInteger(plaintext1);
		BigInteger n2 = n.multiply(n);

		// encrypt
		BigInteger codedBytes = d.encrypt(first.toByteArray(), pubKey,cipherHP);
		BigInteger codedBytes12 = d.encrypt(second.toByteArray(), pubKey,cipherHP);
		//product
		BigInteger product = codedBytes.multiply(codedBytes12);

		// product mod n^2
		BigInteger tallyProduct = product.mod(n2);
	    System.out.println(" Product mod n^2:      "+tallyProduct);
	    d.decrypt(tallyProduct.toByteArray(), privKey,cipherHP);

		d.decrypt(codedBytes.toByteArray(),privKey,cipherHP);
		d.decrypt(codedBytes12.toByteArray(),privKey,cipherHP);
		
		//////////////////////////////BLOCK EXAMPLE/////////////////////////////////
		String plainTextBlock = "This Provider working correctly and its safe 10000000000000000011000000000000000001";
		System.out.println("This is the message which will be encrypted: " + plainTextBlock);
		
		// encrypt
		byte[] codedBytesBlock = d.encryptBlock(plainTextBlock.getBytes(), pubKey,cipher);
		String codedMessageBlock = new String(codedBytesBlock);
		String codedMessageBlockInHEX = formatingHexRepresentation(codedBytesBlock);
		System.out.println("\n" + "ENCRYPTED :  \n" + codedMessageBlock);
		System.out.println("\n" + "ENCRYPTED in HEX:  \n" + codedMessageBlockInHEX);

		// decrypt
		byte[] encodedBytesBlock = d.decryptBlock(codedMessageBlock, privKey,cipher);
		String encodedMessageBlock = new String(encodedBytesBlock);
		System.out.println("\n" + "DECRYPTED:  \n" + encodedMessageBlock);
			
		}