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

     * Test for <code>KeyException(String, Throwable)</code> constructor
     * Assertion: constructs KeyException when <code>cause</code> is null
     * <code>msg</code> is not null
     */
    public void testKeyException07() {
        KeyException tE;
        for (int i = 0; i < msgs.length; i++) {
            tE = new KeyException(msgs[i], null);
            assertEquals("getMessage() must return: ".concat(msgs[i]), tE
                    .getMessage(), msgs[i]);
            assertNull("getCause() must return null", tE.getCause());
        }
    }

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     * Test for <code>KeyException(String, Throwable)</code> constructor
     * Assertion: constructs KeyException when <code>cause</code> is not null
     * <code>msg</code> is null
     */
    public void testKeyException08() {
        KeyException tE = new KeyException(null, tCause);
        if (tE.getMessage() != null) {
            String toS = tCause.toString();
            String getM = tE.getMessage();
            assertTrue("getMessage() must should ".concat(toS), (getM
                    .indexOf(toS) != -1));
        }
        assertNotNull("getCause() must not return null", tE.getCause());
        assertEquals("getCause() must return ".concat(tCause.toString()), tE
                .getCause(), tCause);
    }

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     * Test for <code>KeyException(String, Throwable)</code> constructor
     * Assertion: constructs KeyException when <code>cause</code> is not null
     * <code>msg</code> is not null
     */
    public void testKeyException09() {
        KeyException tE;
        for (int i = 0; i < msgs.length; i++) {
            tE = new KeyException(msgs[i], tCause);
            String getM = tE.getMessage();
            String toS = tCause.toString();
            if (msgs[i].length() > 0) {
                assertTrue("getMessage() must contain ".concat(msgs[i]), getM
                        .indexOf(msgs[i]) != -1);
                if (!getM.equals(msgs[i])) {
                    assertTrue("getMessage() should contain ".concat(toS), getM
                            .indexOf(toS) != -1);
                }
            }
            assertNotNull("getCause() must not return null", tE.getCause());
            assertEquals("getCause() must return ".concat(tCause.toString()),
                    tE.getCause(), tCause);
        }
    }

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  /**
   * @tests java.security.KeyException#KeyException()
   */
  public void test_Constructor() {
    // Test for method java.security.KeyException()
    KeyException e = new KeyException();
    assertEquals("Failed toString test for constructed instance", "java.security.KeyException", e
        .toString());
  }

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  /**
   * @tests java.security.KeyException#KeyException(java.lang.String)
   */
  public void test_ConstructorLjava_lang_String() {
    // Test for method java.security.KeyException(java.lang.String)
    KeyException e = new KeyException("test message");
    assertEquals("Failed toString test for constructed instance", "java.security.KeyException: test message", e
        .toString());
  }

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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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