Package java.security

Examples of java.security.SecureRandom.nextInt()

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  String password;
  {
      Random random = new SecureRandom();
      char bytestring[] = new char[7];
      for(int i = 0; i < 7; i++) {
    bytestring[i] = Character.forDigit(random.nextInt(Character.MAX_RADIX), Character.MAX_RADIX); // only 36.  oh well.
      }
      password = new String(bytestring);
  }
  // first create the account
  newaccnt(earner.get_email(), password, info.get_currency());
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            case HASH_METHOD_CRYPT:
                if ( salt == null )
                {
                    salt = new byte[2];
                    SecureRandom sr = new SecureRandom();
                    int i1 = sr.nextInt( 64 );
                    int i2 = sr.nextInt( 64 );

                    salt[0] = ( byte ) ( i1 < 12 ? ( i1 + '.' ) : i1 < 38 ? ( i1 + 'A' - 12 ) : ( i1 + 'a' - 38 ) );
                    salt[1] = ( byte ) ( i2 < 12 ? ( i2 + '.' ) : i2 < 38 ? ( i2 + 'A' - 12 ) : ( i2 + 'a' - 38 ) );
                }
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                if ( salt == null )
                {
                    salt = new byte[2];
                    SecureRandom sr = new SecureRandom();
                    int i1 = sr.nextInt( 64 );
                    int i2 = sr.nextInt( 64 );

                    salt[0] = ( byte ) ( i1 < 12 ? ( i1 + '.' ) : i1 < 38 ? ( i1 + 'A' - 12 ) : ( i1 + 'a' - 38 ) );
                    salt[1] = ( byte ) ( i2 < 12 ? ( i2 + '.' ) : i2 < 38 ? ( i2 + 'A' - 12 ) : ( i2 + 'a' - 38 ) );
                }
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            //This is a lengthy operation, to be done only upon
            //initialization of the application
            SecureRandom prng = SecureRandom.getInstance("SHA1PRNG");

            //generate a random number
            String randomNum = Integer.toString(prng.nextInt());

            //get its digest
            MessageDigest sha = MessageDigest.getInstance("SHA-1");
            byte[] result = sha.digest(randomNum.getBytes());
            return hexEncode(result);
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        }
        else if ( HASH_METHOD_CRYPT.equals( hashMethod ) )
        {
            this.salt = new byte[2];
            SecureRandom sr = new SecureRandom();
            int i1 = sr.nextInt( 64 );
            int i2 = sr.nextInt( 64 );
            this.salt[0] = ( byte ) ( i1 < 12 ? ( i1 + '.' ) : i1 < 38 ? ( i1 + 'A' - 12 ) : ( i1 + 'a' - 38 ) );
            this.salt[1] = ( byte ) ( i2 < 12 ? ( i2 + '.' ) : i2 < 38 ? ( i2 + 'A' - 12 ) : ( i2 + 'a' - 38 ) );
        }
        else
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        else if ( HASH_METHOD_CRYPT.equals( hashMethod ) )
        {
            this.salt = new byte[2];
            SecureRandom sr = new SecureRandom();
            int i1 = sr.nextInt( 64 );
            int i2 = sr.nextInt( 64 );
            this.salt[0] = ( byte ) ( i1 < 12 ? ( i1 + '.' ) : i1 < 38 ? ( i1 + 'A' - 12 ) : ( i1 + 'a' - 38 ) );
            this.salt[1] = ( byte ) ( i2 < 12 ? ( i2 + '.' ) : i2 < 38 ? ( i2 + 'A' - 12 ) : ( i2 + 'a' - 38 ) );
        }
        else
        {
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            case HASH_METHOD_CRYPT :
                if ( salt == null )
                {
                    salt = new byte[2];
                    SecureRandom sr = new SecureRandom();
                    int i1 = sr.nextInt( 64 );
                    int i2 = sr.nextInt( 64 );
               
                    salt[0] = ( byte ) ( i1 < 12 ? ( i1 + '.' ) : i1 < 38 ? ( i1 + 'A' - 12 ) : ( i1 + 'a' - 38 ) );
                    salt[1] = ( byte ) ( i2 < 12 ? ( i2 + '.' ) : i2 < 38 ? ( i2 + 'A' - 12 ) : ( i2 + 'a' - 38 ) );
                }
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                if ( salt == null )
                {
                    salt = new byte[2];
                    SecureRandom sr = new SecureRandom();
                    int i1 = sr.nextInt( 64 );
                    int i2 = sr.nextInt( 64 );
               
                    salt[0] = ( byte ) ( i1 < 12 ? ( i1 + '.' ) : i1 < 38 ? ( i1 + 'A' - 12 ) : ( i1 + 'a' - 38 ) );
                    salt[1] = ( byte ) ( i2 < 12 ? ( i2 + '.' ) : i2 < 38 ? ( i2 + 'A' - 12 ) : ( i2 + 'a' - 38 ) );
                }
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    public static String getUID() throws NoSuchAlgorithmException {
        SecureRandom prng = SecureRandom.getInstance("SHA1PRNG");

        //generate a random number
        String randomNum = new Integer(prng.nextInt()).toString();

        //get its digest
        MessageDigest sha = MessageDigest.getInstance("SHA-1");
        byte[] result = sha.digest(randomNum.getBytes());
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            }
            catch (Exception e)
            {
                if (logger.isLoggable(MLevel.INFO))
                    logger.log(MLevel.INFO, "Failed to get local InetAddress for VMID. This is unlikely to matter. At all. We'll add some extra randomness", e);
                dos.write( srand.nextInt() );
            }
            dos.writeLong(System.currentTimeMillis());
            dos.write( srand.nextInt() );
           
            int remainder = baos.size() % 4; //if it wasn't a 4 byte inet address
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