Examples of java.security.KeyException

java.security.KeyException
This is the basic key exception. @see Key @see InvalidKeyException @see KeyManagementException @version 1.20 05/11/17 @author Benjamin Renaud

      VerifierInfo info = null;
      try
      {
         info = verifierStore.getUserVerifier(username);
         if (info == null)
            throw new KeyException("Unknown username: " + username);
         params = new SRPParameters(info.N, info.g, info.salt,
            info.hashAlgorithm, info.cipherAlgorithm, info.cipherIV);
         if (log.isTraceEnabled())
         {
            log.trace("Params: " + params);

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    }


    @Override
    public PublicKey getPublicKey() throws KeyException {
        if (publicKey == null) {
            throw new KeyException("can't convert KeyValue to PublicKey");
        } else {
            return publicKey;
        }
    }

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                            return null;
                        }
                    }
                );
            } catch (PrivilegedActionException pae) {
                throw new KeyException("ECKeyValue not supported",
                                        pae.getException());
            }
            Object[] args = new Object[] { ecPoint, ecParams.getCurve() };
            try {
                ecPublicKey = (byte[])encodePoint.invoke(null, args);
            } catch (IllegalAccessException iae) {
                throw new KeyException(iae);
            } catch (InvocationTargetException ite) {
                throw new KeyException(ite);
            }
        }

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     * @throws KeyException thrown if the key algorithm is not supported by the JCE or the key spec does not
     *             contain valid information
     */
    public static PublicKey getDSAKey(DSAKeyValue keyDescriptor) throws KeyException {
        if (! hasCompleteDSAParams(keyDescriptor)) {
            throw new KeyException("DSAKeyValue element did not contain at least one of DSA parameters P, Q or G");
        }
        
        BigInteger gComponent = keyDescriptor.getG().getValueBigInt();
        BigInteger pComponent = keyDescriptor.getP().getValueBigInt();
        BigInteger qComponent = keyDescriptor.getQ().getValueBigInt();

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        try {
            KeyFactory keyFactory = KeyFactory.getInstance(keyAlgorithm);
            return keyFactory.generatePublic(keySpec);
        } catch (NoSuchAlgorithmException e) {
            log.error(keyAlgorithm + " algorithm is not supported by this VM", e);
            throw new KeyException(keyAlgorithm + "algorithm is not supported by the JCE", e);
        } catch (InvalidKeySpecException e) {
            log.error("Invalid key information", e);
            throw new KeyException("Invalid key information", e);
        }
    }

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            throw new NoSuchAlgorithmException("Algorithm URI'" + algoURI + "' is invalid for key generation");
        }
        Integer keyLength = getKeyLengthFromURI(algoURI);
        if (keyLength == null) {
            log.error("Key length could not be determined from algorithm URI, can't generate key");
            throw new KeyException("Key length not determinable from algorithm URI, could not generate new key");
        }
        KeyGenerator keyGenerator = KeyGenerator.getInstance(jceAlgorithmName);
        keyGenerator.init(keyLength);
        return keyGenerator.generateKey();
    }

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        try {
            return buildKey(keySpec, "EC");
        }
        catch (KeyException ex) {
        }
        throw new KeyException("Unsupported key type.");
    }

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            try {
                factory = KeyFactory.getInstance("DSA");
                return factory.generatePublic(pubKeySpec);
            } catch (GeneralSecurityException e) {
                throw new KeyException("Unable to derive public key from DSA private key", e);
            }
        } else if (key instanceof RSAPrivateCrtKey) {
            RSAPrivateCrtKey rsaKey = (RSAPrivateCrtKey) key;
            RSAPublicKeySpec pubKeySpec = new RSAPublicKeySpec(rsaKey.getModulus(), rsaKey.getPublicExponent());


            try {
                factory = KeyFactory.getInstance("RSA");
                return factory.generatePublic(pubKeySpec);
            } catch (GeneralSecurityException e) {
                throw new KeyException("Unable to derive public key from RSA private key", e);
            }
        } else {
            throw new KeyException("Private key was not a DSA or RSA key");
        }
    }

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     * 
     * @throws KeyException thrown if the key can not be decoded
     */
    public static PrivateKey decodePrivateKey(File key, char[] password) throws KeyException {
        if (!key.exists()) {
            throw new KeyException("Key file " + key.getAbsolutePath() + " does not exist");
        }


        if (!key.canRead()) {
            throw new KeyException("Key file " + key.getAbsolutePath() + " is not readable");
        }


        try {
            return decodePrivateKey(DatatypeHelper.fileToByteArray(key), password);
        } catch (IOException e) {
            throw new KeyException("Error reading Key file " + key.getAbsolutePath(), e);
        }
    }

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    public static PrivateKey decodePrivateKey(byte[] key, char[] password) throws KeyException {
        try {
            PKCS8Key deocodedKey = new PKCS8Key(key, password);
            return deocodedKey.getPrivateKey();
        } catch (GeneralSecurityException e) {
            throw new KeyException("Unable to decode private key", e);
        }
    }

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