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Class cryptix.provider.rpk.RPKKeyGenerator

java.lang.Object
   |
   +----java.security.KeyGenerator
           |
           +----cryptix.provider.rpk.RPKKeyGenerator

public class RPKKeyGenerator

extends KeyGenerator

implements RPKParams

The following code illustrates the use of key specifications that are different from the default ones:

     ...
     int[][] newspecs = {{89, 38}, {127, 30}, {521, 163}};
     int newgranularity = 8;
     SecureRandom newprng = new SecureRandom();
     RPKKeyGenerator kg = new RPKKeyGenerator();
     kg.initialize(newspecs, newgranularity, newprng);
     RPKKey k = (RPKKey) kg.generateKey();
     ...
 

References:

1. William M. Raike, The RPK Public-Key Cryptographic System - Technical Summary (available at http://crypto.swdev.co.nz).

2. William M. Raike, Detailed Supplemental Technical Description of the RPK Public-Key Cryptographic System (available at http://crypto.swdev.co.nz).

Copyright © 1997 Systemics Ltd on behalf of the Cryptix Development Team.
All rights reserved.

$Revision: 1.2 $

Author:

Raif S. Naffah

See Also:

KeyGenerator

RPKKeyGenerator()

generateKey()

Generates a key.

initialize(int[][], int, SecureRandom)

Initialise an RPK key generator given all its parameters.

initialize(SecureRandom)

Initializes the key generator.

 public RPKKeyGenerator()

 public void initialize(int generatorSpecs[][],
                        int granularity,
                        SecureRandom source) throws InvalidParameterException

Initialise an RPK key generator given all its parameters.

Parameters:

generatorSpecs - An array of 3 pairs of values defining the characteristics of 3 RPK Generators to be combined together forming an RPKKey. When not specified, a default set of values is taken from RPKParams.

granularity - A property (with values from 1 to 8) that defines how many bits from the key's Generators output sequence are to be combined with the input stream. The lower the granularity value is, the less secure the output becomes. A default value for this parameter is defined in RPKParams.

source - A cryptographically strong source of pseudo random data.

Throws: InvalidParameterException

If the specifications array does not contain exactly 3 elements, or an error occured while generating a seed key from the supplied parameters.

See Also:

DEFAULT_KEY_SPECS, DEFAULT_GRANULARITY

 public void initialize(SecureRandom source)

Initializes the key generator.

Overrides:

initialize in class KeyGenerator

 public SecretKey generateKey()

Generates a key.

Overrides:

generateKey in class KeyGenerator

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