List of generateSeed() Examples

Examples of generateSeed()

java.security.SecureRandom.generateSeed()
Returns the given number of seed bytes, computed using the seed generation algorithm that this class uses to seed itself. This call may be used to seed other random number generators. @param numBytes the number of seed bytes to generate. @return the seed bytes.
org.bouncycastle.crypto.prng.ThreadedSeedGenerator.generateSeed()
Generate seed bytes. Set fast to false for best quality.
If fast is set to true, the code should be round about 8 times faster when generating a long sequence of random bytes. 20 bytes of random values using the fast mode take less than half a second on a Nokia e70. If fast is set to false, it takes round about 2500 ms.
@param numBytes the number of bytes to generate @param fast true if fast mode should be used

Examples of java.security.SecureRandom.generateSeed()

            // and afterwards (in the thread) using the regular algorithm.
            Runnable runnable = new Runnable() {
                public void run() {
                    try {
                        SecureRandom sr = SecureRandom.getInstance("SHA1PRNG");
                        byte[] seed = sr.generateSeed(20);
                        synchronized (cachedSecureRandom) {
                            cachedSecureRandom.setSeed(seed);
                            seeded = true;
                        }
                    } catch (Exception e) {

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Examples of java.security.SecureRandom.generateSeed()


  private byte[] generateSalt(int saltSize) throws NoSuchAlgorithmException, NoSuchProviderException {
    SecureRandom sr = new SecureRandom();
    // Note that the nexus code seeds the SecureRandom:
    // this seems to be both unnecessary and incorrect
    return sr.generateSeed(saltSize);
  }


  private Cipher buildCipher(String passphrase, byte[] salt, int mode) throws InvalidKeySpecException,
      NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException {
    KeySpec keySpec = new PBEKeySpec(passphrase.toCharArray());

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Examples of java.security.SecureRandom.generateSeed()

            // and afterwards (in the thread) using the regular algorithm.
            Runnable runnable = new Runnable() {
                public void run() {
                    try {
                        SecureRandom sr = SecureRandom.getInstance("SHA1PRNG");
                        byte[] seed = sr.generateSeed(20);
                        synchronized (cachedSecureRandom) {
                            cachedSecureRandom.setSeed(seed);
                            seeded = true;
                        }
                    } catch (Exception e) {

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Examples of java.security.SecureRandom.generateSeed()

        // generator "self seeds".  If a setSeed() is called before
        // any nextBytes call, no self seeding is done.  We use the
        // self seeding and our own bytes.
        
        // Access the internal seed generator.
        byte[] seed1 = sRandom.generateSeed(16) ;
        byte[] seed2 = LibUUID.makeSeed() ;
        // seeds are cumulative
        sRandom.setSeed(seed1) ;                     
        sRandom.setSeed(seed2) ;                     
        return sRandom ;

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Examples of java.security.SecureRandom.generateSeed()

                ("Hash algorithm '"+hashAlgo+"' is not supported for document write protection.");
            }


        
            SecureRandom random = new SecureRandom(); 
            byte salt[] = random.generateSeed(16);
    
            // Iterations specifies the number of times the hashing function shall be iteratively run (using each
            // iteration's result as the input for the next iteration).
            int spinCount = 100000;

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Examples of java.security.SecureRandom.generateSeed()

    new SecureRandom(seed).nextBytes(new byte[20]);
  }


  public final void testGenerateSeed() {
    SecureRandom sr = new SecureRandom();
    byte[] seed = sr.generateSeed(5);
    new SecureRandom(seed).nextBytes(new byte[20]);
  }
}

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Examples of java.security.SecureRandom.generateSeed()

        // generator "self seeds".  If a setSeed() is called before
        // any nextBytes call, no self seeding is done.  We use the
        // self seeding and our own bytes.
        
        // Access the internal seed generator.
        byte[] seed1 = sRandom.generateSeed(16) ;
        byte[] seed2 = LibUUID.makeSeed() ;
        // seeds are cumulative
        sRandom.setSeed(seed1) ;                     
        sRandom.setSeed(seed2) ;                     
        return sRandom ;

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Examples of java.security.SecureRandom.generateSeed()

                newRandom = SecureRandom.getInstance(algorithm, algorithmProvider);
            }


            /* ensure the SecureRandom gets seeded */
            long before = log.isDebugEnabled() ? 0 : System.currentTimeMillis();
            newRandom.setSeed(newRandom.generateSeed(seedLength));
            if (log.isDebugEnabled()) {
                long now = System.currentTimeMillis();
                log.debug("secureRandom.setSeed took " + ((now - before) / 1000.0) +" seconds.");
            }
            delegate = newRandom;

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Examples of java.security.SecureRandom.generateSeed()

            log.info("Falling back to default random algorithm provider because '" + algorithmProvider + "' is not available.", e);
            /* use the default provider */
            try {
                newRandom = SecureRandom.getInstance(algorithm);
                /* ensure the SecureRandom gets seeded */
                newRandom.setSeed(newRandom.generateSeed(seedLength));
                delegate = newRandom;
            } catch (NoSuchAlgorithmException e1) {
                throw new RuntimeException(e);
            }
        }

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Examples of java.security.SecureRandom.generateSeed()

                if (LOG.isDebugEnabled())
                    LOG.debug("Reseeding {}",this);
                if (_random instanceof SecureRandom)
                {
                    SecureRandom secure = (SecureRandom)_random;
                    secure.setSeed(secure.generateSeed(8));
                }
                else
                {
                    _random.setSeed(_random.nextLong()^System.currentTimeMillis()^seedTerm^Runtime.getRuntime().freeMemory());
                }

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