Examples of java.security.SecureRandom

java.security.SecureRandom
nist.gov/cryptval/140-2.htm"> FIPS 140-2, Security Requirements for Cryptographic Modules, section 4.9.1. Additionally, SecureRandom must produce non-deterministic output. Therefore any seed material passed to a SecureRandom object must be unpredictable, and all SecureRandom output sequences must be cryptographically strong, as described in RFC 1750: Randomness Recommendations for Security.
A caller obtains a SecureRandom instance via the no-argument constructor or one of the getInstance methods:
```
 SecureRandom random = new SecureRandom(); 
```
Many SecureRandom implementations are in the form of a pseudo-random number generator (PRNG), which means they use a deterministic algorithm to produce a pseudo-random sequence from a true random seed. Other implementations may produce true random numbers, and yet others may use a combination of both techniques.
Typical callers of SecureRandom invoke the following methods to retrieve random bytes:
```
 SecureRandom random = new SecureRandom(); byte bytes[] = new byte[20]; random.nextBytes(bytes); 
```
Callers may also invoke the generateSeed method to generate a given number of seed bytes (to seed other random number generators, for example):
```
 byte seed[] = random.generateSeed(20); 
```
@see java.security.SecureRandomSpi @see java.util.Random @version 1.54, 04/21/06 @author Benjamin Renaud @author Josh Bloch

        {
        }
        public void checkServerTrusted(X509Certificate[] chain,  String authType) throws CertificateException
        {
        }
      }}, new SecureRandom());
      SSLSocketFactory sf = new SSLSocketFactory(sslContext, new AllowAllHostnameVerifier());
      httpsScheme = new Scheme("https", 443, sf);
    }
    else
      httpsScheme = new Scheme("http", 80, PlainSocketFactory.getSocketFactory());

View Full Code Here

        {
        }
        public void checkServerTrusted(X509Certificate[] chain,  String authType) throws CertificateException
        {
        }
      }}, new SecureRandom());
      SSLSocketFactory sf = new SSLSocketFactory(sslContext, new AllowAllHostnameVerifier());
      httpsScheme = new Scheme("https", 443, sf);
    }
    else
      httpsScheme = new Scheme("http", 80, PlainSocketFactory.getSocketFactory());

View Full Code Here

        {
        }
        public void checkServerTrusted(X509Certificate[] chain,  String authType) throws CertificateException
        {
        }
      }}, new SecureRandom());
      SSLSocketFactory sf = new SSLSocketFactory(sslContext, new AllowAllHostnameVerifier());
      httpsScheme = new Scheme("https", 443, sf);
    }
    else
      httpsScheme = new Scheme("http", 80, PlainSocketFactory.getSocketFactory());

View Full Code Here

            try {
              String[] sslContexts = new String[]{ "TLS", "SSL" };


              for(String ctx : sslContexts) {
                SSLContext sc = SSLContext.getInstance(ctx);
                sc.init(keyManagers, trustManagers, new SecureRandom());
                h.setSSLSocketFactory(sc.getSocketFactory());
              }


            } catch(Exception ex) {
              throw new XMLRPCException(ex);

View Full Code Here

        {
        }
        public void checkServerTrusted(X509Certificate[] chain,  String authType) throws CertificateException
        {
        }
      }}, new SecureRandom());
      SSLSocketFactory sf = new SSLSocketFactory(sslContext, new AllowAllHostnameVerifier());
      httpsScheme = new Scheme("https", 443, sf);
    }
    else
      httpsScheme = new Scheme("http", 80, PlainSocketFactory.getSocketFactory());

View Full Code Here

     * @return an UUID instance.
     */
    public static String randomUUID() {
        byte[] data;
        // lock on the class to protect lazy init
        SecureRandom rng = new SecureRandom();
        rng.nextBytes(data = new byte[16]);
        long mostSigBits = (data[0] & 0xFFL) << 56;
        mostSigBits |= (data[1] & 0xFFL) << 48;
        mostSigBits |= (data[2] & 0xFFL) << 40;
        mostSigBits |= (data[3] & 0xFFL) << 32;
        mostSigBits |= (data[4] & 0xFFL) << 24;

View Full Code Here


    @Inject
    public CustomPersistentRememberMeServices(Environment env, org.springframework.security.core.userdetails.UserDetailsService userDetailsService) {


        super(env.getProperty("jhipster.security.rememberme.key"), userDetailsService);
        random = new SecureRandom();
    }

View Full Code Here

                for (InterfaceAddress address : ifc.getInterfaceAddresses()) {
                    addresses.add(new Client.HostPort(address.getAddress().getHostAddress(), opts.port));
                }
            }
        }
        long serverId = new SecureRandom().nextLong();


        Set<Server> servers = instance.getSet("servers");
        Server r = new Server(serverId, addresses);
        servers.add(r);
        logger.warn("Currently have these servers: {}", servers);

View Full Code Here

//        logPolicy.setLogRequestProto(true);
//        logPolicy.setLogResponseProto(true);
//        bootstrap.setLogger(logPolicy);


        //Finally binding the bootstrap to the TCP port will start off the socket accepting and clients can start to connect.
        long serverId = new SecureRandom().nextLong();
        String zk_str = props.getProperty("zookeeper.connection.string", ZK_CONNECT_STRING);
        if (args.length == 3) {
            zk_str = args[2];
        }

View Full Code Here

                for (InterfaceAddress address : ifc.getInterfaceAddresses()) {
                    addresses.add(new Client.HostPort(address.getAddress().getHostAddress(), port));
                }
            }
        }
        serverId = new SecureRandom().nextLong();


        us = new Server(serverId, addresses);
    }

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of java.security.SecureRandom

avrobase.file.FABTest

avrobase.hs.HSABTest

avrobase.redis.RABTest

bear.plugins.java.JenkinsCache

ca.eandb.jdcp.worker.ConnectionDialog

ch.ethz.ssh2.Connection

ch.qos.logback.core.net.ssl.SSLContextFactoryBean

com.alibaba.citrus.service.requestcontext.session.idgen.random.impl.RandomIDGenerator

com.alibaba.citrus.util.UUID

com.amazonaws.services.s3.internal.crypto.EncryptionUtils

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.