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The BSD License Copyright (c) 2010-2012 RIPE NCC All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. - Neither the name of the RIPE NCC nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 package net.ripe.rpki.commons.crypto.util;
 
 
 public class KeyPairFactory {
 
     public static final String ALGORITHM = "RSA";
 
     public static final int RPKI_KEY_PAIR_SIZE = 2048;

    
F4 Public Exponent
 
     public static final BigInteger PUBLIC_EXPONENT = .;
 
     private final String provider;
 
     public KeyPairFactory(String provider) {
         this. = provider;
     }
 
     public KeyPair generate() {
         try {
             KeyPairGenerator generator = KeyPairGenerator.getInstance();
             generator.initialize(new RSAKeyGenParameterSpec());
             return generator.generateKeyPair();
         } catch (NoSuchProviderException e) {
             throw new KeyPairFactoryException(e);
         } catch (NoSuchAlgorithmException e) {
             throw new KeyPairFactoryException(e);
         } catch (InvalidAlgorithmParameterException e) {
             throw new KeyPairFactoryException(e);
         }
     }

    
Decodes an X.509 encoded public key.

Parameters:
encoded the encoded public key.
Returns:
the PublicKey.
 
     public static PublicKey decodePublicKey(byte[] encoded) {
         try {
             return KeyFactory.getInstance().generatePublic(new X509EncodedKeySpec(encoded));
         } catch (InvalidKeySpecException e) {
             throw new KeyPairFactoryException(e);
         } catch (NoSuchAlgorithmException e) {
             throw new KeyPairFactoryException(e);
         }
     }

    
Decodes a PKCS#8 encoded private key. This is the default encoding for the private key getEncoded method.

Parameters:
encoded the encoded data.
Returns:
the PrivateKey.
 
     public static PrivateKey decodePrivateKey(byte[] encoded) {
         try {
            return KeyFactory.getInstance().generatePrivate(new PKCS8EncodedKeySpec(encoded));
        } catch (InvalidKeySpecException e) {
            throw new KeyPairFactoryException(e);
        } catch (NoSuchAlgorithmException e) {
            throw new KeyPairFactoryException(e);
        }
    }
    public KeyPairFactory withProvider(String provider) {
        return new KeyPairFactory(provider);
    }
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