I'm trying to use RIM's Crypto API's in my project i have made a public/private keypair in Java as follows:
try {
keyPairGenerator = KeyPairGenerator.getInstance("RSA");
keyPairGenerator.initialize(1024);
keyFactory = KeyFactory.getInstance("RSA");
} catch (NoSuchAlgorithmException ex) {
Logger.getLogger(EncryptorDecryptor.class.getName()).log(Level.SEVERE, null, ex);
}
keyPair = keyPairGenerator.generateKeyPair();
publicKey = keyPair.getPublic();
privateKey = keyPair.getPrivate();
try {
publicKeySpec = keyFactory.getKeySpec(publicKey, RSAPublicKeySpec.class);
privateKeySpec = keyFactory.getKeySpec(privateKey, RSAPrivateKeySpec.class);
} catch (InvalidKeySpecException ex) {
Logger.getLogger(EncryptorDecryptor.class.getName()).log(Level.SEVERE, null, ex);
}
privateKeyModulus = privateKeySpec.getModulus().toString();
privateKeyExponent = privateKeySpec.getPrivateExponent().toString();
publicKeyModulus = publicKeySpec.getModulus().toString();
publicKeyExponent = publicKeySpec.getPublicExponent().toString();
I save the modulus and exponent strings as part of my code in the server. On the client i save the modulus and exponent required to create the public key as strings. I try to do the following to encrypt:
public byte[] Encrypt(byte[] data)
{
try {
RSACryptoSystem cryptoSystem = new RSACryptoSystem(1024);
RSAPublicKey publicKey = new RSAPublicKey(cryptoSystem,_publicKeyExponent.getBytes(), _publicKeyModulus.getBytes());
RSAEncryptorEngine encryptorEngine = new RSAEncryptorEngine(publicKey);
PKCS5FormatterEngine formatterEngine = new PKCS5FormatterEngine( encryptorEngine );
ByteArrayOutputStream output = new ByteArrayOutputStream();
BlockEncryptor encryptor = new BlockEncryptor( formatterEngine, output );
encryptor.write(data);
encryptor.close();
output.close();
return output.toByteArray();
} catch (InvalidKeyException e) {
// TODO Auto-generated catch block
System.out.println();
e.printStackTrace();
} catch (CryptoTokenException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (CryptoUnsupportedOperationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (UnsupportedCryptoSystemException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
When creating the public key i get the error, anybody have any idea what the issue might be? Or have an alternative?
