private void testCipherNameWithWrap(String name, String simpleName) throws Exception {
KeyGenerator kg = KeyGenerator.getInstance("AES");
kg.init(new SecureRandom());
SecretKey key = kg.generateKey();
byte[] salt = {
(byte) 0xc7, (byte) 0x73, (byte) 0x21, (byte) 0x8c,
(byte) 0x7e, (byte) 0xc8, (byte) 0xee, (byte) 0x99
};
char[] password = {'p', 'a', 's', 's', 'w', 'o', 'r', 'd'};
PBEParameterSpec pbeParamSpec = new PBEParameterSpec(salt, 20);
PBEKeySpec pbeKeySpec = new PBEKeySpec(password);
SecretKeyFactory keyFac = SecretKeyFactory.getInstance(name);
SecretKey pbeKey = keyFac.generateSecret(pbeKeySpec);
Cipher pbeEncryptCipher = Cipher.getInstance(name, "SC");
pbeEncryptCipher.init(Cipher.WRAP_MODE, pbeKey, pbeParamSpec);
byte[] symKeyBytes = pbeEncryptCipher.wrap(key);
Cipher simpleCipher = Cipher.getInstance(simpleName, "SC");
simpleCipher.init(Cipher.UNWRAP_MODE, pbeKey, pbeParamSpec);
SecretKey unwrappedKey = (SecretKey) simpleCipher.unwrap(symKeyBytes, "AES", Cipher.SECRET_KEY);
if (!Arrays.areEqual(unwrappedKey.getEncoded(), key.getEncoded())) {
fail("key mismatch on unwrapping");
}
}
/**
* Generate a new MWK
*
* @return Hex String of the new encrypted MWK ready for transmission to ValueLink
*/
public byte[] generateMwk() {
KeyGenerator keyGen = null;
try {
keyGen = KeyGenerator.getInstance("DES");
} catch (NoSuchAlgorithmException e) {
Debug.logError(e, module);
}
// generate the DES key 1
SecretKey des1 = keyGen.generateKey();
SecretKey des2 = keyGen.generateKey();
if (des1 != null && des2 != null) {
byte[] desByte1 = des1.getEncoded();
byte[] desByte2 = des2.getEncoded();
byte[] desByte3 = des1.getEncoded();
// check for weak keys
try {
if (DESKeySpec.isWeak(des1.getEncoded(), 0) || DESKeySpec.isWeak(des2.getEncoded(), 0)) {
return generateMwk();
}
} catch (Exception e) {
Debug.logError(e, module);
}
byte[] des3 = copyBytes(desByte1, copyBytes(desByte2, desByte3, 0), 0);
return generateMwk(des3);
} else {
Debug.logInfo("Null DES keys returned", module);
}
return null;
}
/**
* Generates a random secret key using the algorithm specified in the first DataReference URI
*
* @param dataRefURIs
* @param doc
* @param wsDocInfo
* @return
* @throws WSSecurityException
*/
private static byte[] getRandomKey(List<String> dataRefURIs, Document doc, WSDocInfo wsDocInfo)
throws WSSecurityException {
try {
String alg = "AES";
int size = 16;
if (!dataRefURIs.isEmpty()) {
String uri = dataRefURIs.iterator().next();
Element ee = ReferenceListProcessor.findEncryptedDataElement(doc, uri);
String algorithmURI = X509Util.getEncAlgo(ee);
alg = JCEMapper.getJCEKeyAlgorithmFromURI(algorithmURI);
size = WSSecurityUtil.getKeyLength(algorithmURI);
}
KeyGenerator kgen = KeyGenerator.getInstance(alg);
kgen.init(size * 8);
SecretKey k = kgen.generateKey();
return k.getEncoded();
} catch (Throwable ex) {
// Fallback to just using AES to avoid attacks on EncryptedData algorithms
try {
KeyGenerator kgen = KeyGenerator.getInstance("AES");
kgen.init(128);
SecretKey k = kgen.generateKey();
return k.getEncoded();
} catch (NoSuchAlgorithmException e) {
throw new WSSecurityException(WSSecurityException.FAILED_CHECK, null, null, e);
}
}
}
protected KeySpec engineGetKeySpec(SecretKey key, Class keySpec) throws InvalidKeySpecException {
if (keySpec == null) {
throw new InvalidKeySpecException("keySpec parameter is null");
}
if (key == null) {
throw new InvalidKeySpecException("key parameter is null");
}
if (SecretKeySpec.class.isAssignableFrom(keySpec)) {
return new SecretKeySpec(key.getEncoded(), algName);
}
try {
Class[] parameters = {byte[].class};
Constructor c = keySpec.getConstructor(parameters);
Object[] p = new Object[1];
p[0] = key.getEncoded();
return (KeySpec) c.newInstance(p);
} catch (Exception e) {
throw new InvalidKeySpecException(e.toString());
}
}
protected KeySpec engineGetKeySpec(SecretKey key, Class keySpec)
throws InvalidKeySpecException {
if (keySpec == null) {
throw new InvalidKeySpecException("keySpec parameter is null");
}
if (key == null) {
throw new InvalidKeySpecException("key parameter is null");
}
if (SecretKeySpec.class.isAssignableFrom(keySpec)) {
return new SecretKeySpec(key.getEncoded(), algName);
} else if (DESedeKeySpec.class.isAssignableFrom(keySpec)) {
byte[] bytes = key.getEncoded();
try {
if (bytes.length == 16) {
byte[] longKey = new byte[24];
System.arraycopy(bytes, 0, longKey, 0, 16);
System.arraycopy(bytes, 0, longKey, 16, 8);
return new DESedeKeySpec(longKey);
} else {
return new DESedeKeySpec(bytes);
}
} catch (Exception e) {
throw new InvalidKeySpecException(e.toString());
}
}
throw new InvalidKeySpecException("Invalid KeySpec");
}
public void checkKey() throws Exception {
SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
KeySpec spec = new PBEKeySpec("123".toCharArray(), "123".getBytes(), 10, 128);
SecretKey tmp = factory.generateSecret(spec);
SecretKeySpec key = new SecretKeySpec(tmp.getEncoded(), "AES"); // TODO: get appropriate key
key = new SecretKeySpec(tmp.getEncoded(), "Blowfish"); // TODO: get appropriate key
key = new SecretKeySpec(tmp.getEncoded(), "DES"); // TODO: get appropriate key
// Blowfish, DES
}
protected String decrypt(String content, String key) {
if (content.length() < 1) return null;
byte[] byteRresult = new byte[content.length() / 2];
for (int i = 0; i < content.length() / 2; i++) {
int high = Integer.parseInt(content.substring(i * 2, i * 2 + 1), 16);
int low = Integer.parseInt(content.substring(i * 2 + 1, i * 2 + 2), 16);
byteRresult[i] = (byte) (high * 16 + low);
}
try {
KeyGenerator kgen = KeyGenerator.getInstance("AES");
kgen.init(128, new SecureRandom(key.getBytes()));
SecretKey secretKey = kgen.generateKey();
byte[] enCodeFormat = secretKey.getEncoded();
SecretKeySpec secretKeySpec = new SecretKeySpec(enCodeFormat, "AES");
Cipher cipher = Cipher.getInstance("AES");
cipher.init(Cipher.DECRYPT_MODE, secretKeySpec);
byte[] result = cipher.doFinal(byteRresult);
return new String(result);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (NoSuchPaddingException e) {
e.printStackTrace();
} catch (InvalidKeyException e) {
e.printStackTrace();
} catch (IllegalBlockSizeException e) {
e.printStackTrace();
} catch (BadPaddingException e) {
e.printStackTrace();
}
return null;
}
@SideOnly(Side.CLIENT)
public Packet252SharedKey(
SecretKey par1SecretKey, PublicKey par2PublicKey, byte[] par3ArrayOfByte) {
this.sharedKey = par1SecretKey;
this.sharedSecret = CryptManager.encryptData(par2PublicKey, par1SecretKey.getEncoded());
this.verifyToken = CryptManager.encryptData(par2PublicKey, par3ArrayOfByte);
}
@Override
public int hashCode() {
int result = id;
result = 31 * result + (int) (expirationDate ^ (expirationDate >>> 32));
result = 31 * result + ((secret == null) ? 0 : Arrays.hashCode(secret.getEncoded()));
return result;
}
/**
* Get the signing key unique to this installation, or create it if it doesn't exist. The purpose
* of this key is to allow signing of backup files (and any other such files) to ensure they are
* not modified by some other program. Of course, if the other program has root then it can modify
* or read this key anyway, so all bets are off.
*
* @return secret key for signing and verification
*/
public SecretKey getOrCreateSigningKey() {
String signingKey = this.prefs.getString(BACKUP_SIGNING_KEY, null);
SecretKey secretKey = null;
if (signingKey != null) {
secretKey =
new SecretKeySpec(
Base64.decode(signingKey, Base64.DEFAULT),
0,
Base64.decode(signingKey, Base64.DEFAULT).length,
"HmacSHA1");
} else {
// supporting multiple algorithms would be good, but then we also need to store the key
// type...
try {
secretKey = KeyGenerator.getInstance("HmacSHA1").generateKey();
} catch (NoSuchAlgorithmException e) {
}
Editor editor = this.prefs.edit();
editor.putString(
BACKUP_SIGNING_KEY, Base64.encodeToString(secretKey.getEncoded(), Base64.DEFAULT));
editor.commit();
}
return secretKey;
}
/**
* Seal session key with RSA public key in a SealedObject.
*
* @return SealedObject of session key
*/
public SealedObject getSessionKey() {
SealedObject object = null;
try {
Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
cipher.init(Cipher.ENCRYPT_MODE, bryanPubKey);
byte[] sessionKeyBytes = sessionKey.getEncoded();
object = new SealedObject(sessionKeyBytes, cipher);
} catch (NoSuchAlgorithmException e) {
System.out.println("Error: No algorithm entered exists.");
System.exit(1);
} catch (NoSuchPaddingException e) {
System.out.println("Error: transformation contains a padding scheme is not available.");
System.exit(1);
} catch (InvalidKeyException e) {
System.out.println("Error: the public key is invalid.");
System.exit(1);
} catch (IllegalBlockSizeException e) {
System.out.println("Error: the block size is invalid.");
System.exit(1);
} catch (IOException e) {
System.out.println("Error: cannot create SealedObject");
System.exit(1);
}
return object;
}
public RSAJweEncryption(RSAPublicKey publicKey, SecretKey secretKey, byte[] iv) {
this(
publicKey,
secretKey,
Algorithm.toJwtName(secretKey.getAlgorithm(), secretKey.getEncoded().length * 8),
iv);
}
/**
* This method broadcasts a payload onto the given topic.
*
* @param topic the topic to broadcast onto
* @param visibility the visibility of the message
* @param payload the payload of the message
*/
public void broadcast(String topic, Visibility visibility, byte[] payload) throws IOException {
byte[] payloadToSend = payload;
SecureMessage message = new SecureMessage();
message.setVisibility(visibility);
if (isProduction) {
try {
// Generate a new symmetric key and encrypt the message
Cipher cipher = Cipher.getInstance(ALGO);
KeyGenerator gen = KeyGenerator.getInstance(ALGO);
gen.init(256);
SecretKey key = gen.generateKey();
cipher.init(Cipher.ENCRYPT_MODE, key);
payloadToSend = cipher.doFinal(payload);
// Get topic crypto object, encrypt the key and embed it into the message
RSAKeyCrypto crypto = topicKeys.get(topic);
message.setKey(crypto.encrypt(key.getEncoded()));
} catch (Exception e) {
log.error("Could not encrypt message for topic [{}].", topic, e);
throw new RuntimeException(e);
}
}
message.setContent(payloadToSend);
byte[] serializedMessage;
try {
serializedMessage = ThriftUtils.serialize(message);
} catch (TException e) {
throw new IOException("Could not serialize message", e);
}
broadcastImpl(topic, serializedMessage);
}
/**
* Initialises the Ciphers for both encryption and decryption using the generated or supplied
* secret key.
*
* @param algorithm
* @param secret
* @throws Exception
*/
private void initSymCiphers(String algorithm, SecretKey secret) throws Exception {
log.debug("initializing symmetric ciphers (pool size=%d)", cipher_pool_size);
for (int i = 0; i < cipher_pool_size; i++) {
encoding_ciphers[i] =
symProvider != null && !symProvider.trim().isEmpty()
? Cipher.getInstance(algorithm, symProvider)
: Cipher.getInstance(algorithm);
encoding_ciphers[i].init(Cipher.ENCRYPT_MODE, secret);
decoding_ciphers[i] =
symProvider != null && !symProvider.trim().isEmpty()
? Cipher.getInstance(algorithm, symProvider)
: Cipher.getInstance(algorithm);
decoding_ciphers[i].init(Cipher.DECRYPT_MODE, secret);
encoding_locks[i] = new ReentrantLock();
decoding_locks[i] = new ReentrantLock();
}
// set the version
MessageDigest digest = MessageDigest.getInstance("MD5");
digest.reset();
digest.update(secret.getEncoded());
byte[] tmp = digest.digest();
symVersion = Arrays.copyOf(tmp, tmp.length);
// symVersion = byteArrayToHexString(digest.digest());
log.debug("initialized symmetric ciphers with secret key (" + symVersion.length + " bytes)");
}
protected String encrypt(String content, String key) {
try {
KeyGenerator kgen = KeyGenerator.getInstance("AES");
kgen.init(128, new SecureRandom(key.getBytes()));
SecretKey secretKey = kgen.generateKey();
byte[] enCodeFormat = secretKey.getEncoded();
SecretKeySpec secretKeySpec = new SecretKeySpec(enCodeFormat, "AES");
Cipher cipher = Cipher.getInstance("AES");
byte[] byteContent = content.getBytes("utf-8");
cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec);
byte[] byteRresult = cipher.doFinal(byteContent);
StringBuffer sb = new StringBuffer();
for (int i = 0; i < byteRresult.length; i++) {
String hex = Integer.toHexString(byteRresult[i] & 0xFF);
if (hex.length() == 1) {
hex = '0' + hex;
}
sb.append(hex.toUpperCase());
}
return sb.toString();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (NoSuchPaddingException e) {
e.printStackTrace();
} catch (InvalidKeyException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IllegalBlockSizeException e) {
e.printStackTrace();
} catch (BadPaddingException e) {
e.printStackTrace();
}
return null;
}
private static byte[] doAes(int mode, byte[] input, String password) {
try {
KeyGenerator keygen = KeyGenerator.getInstance(AES_ALGORITHM_NAME);
keygen.init(128, new SecureRandom(password.getBytes()));
SecretKey secretKey = keygen.generateKey();
byte[] enCodeFormat = secretKey.getEncoded();
SecretKeySpec key = new SecretKeySpec(enCodeFormat, AES_ALGORITHM_NAME);
Cipher cipher = Cipher.getInstance(AES_ALGORITHM_NAME);
cipher.init(Cipher.DECRYPT_MODE, key);
return cipher.doFinal(input);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (NoSuchPaddingException e) {
e.printStackTrace();
} catch (InvalidKeyException e) {
e.printStackTrace();
} catch (IllegalBlockSizeException e) {
e.printStackTrace();
} catch (BadPaddingException e) {
e.printStackTrace();
}
return null;
}
public static byte[] getShared(SecretKey key, PublicKey pubkey)
throws BadPaddingException, IllegalBlockSizeException, InvalidKeyException,
NoSuchAlgorithmException, NoSuchPaddingException {
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.ENCRYPT_MODE, pubkey);
return cipher.doFinal(key.getEncoded());
}
public static boolean isAuthenticated(String username, String connectionHash, SecretKey shared)
throws NoSuchAlgorithmException, IOException {
String encName = URLEncoder.encode(username, "UTF-8");
MessageDigest sha = MessageDigest.getInstance("SHA-1");
for (byte[] bit :
new byte[][] {
connectionHash.getBytes("ISO_8859_1"), shared.getEncoded(), keys.getPublic().getEncoded()
}) {
sha.update(bit);
}
String encodedHash = URLEncoder.encode(new BigInteger(sha.digest()).toString(16), "UTF-8");
String authURL =
"http://session.minecraft.net/game/checkserver.jsp?user="******"&serverId="
+ encodedHash;
String reply;
try (BufferedReader in =
new BufferedReader(new InputStreamReader(new URL(authURL).openStream()))) {
reply = in.readLine();
}
return "YES".equals(reply);
}
/**
* Encrypts a symmetric key using the provided encryption materials and returns it in raw byte
* array form.
*
* @deprecated no longer used and will be removed in the future
*/
@Deprecated
public static byte[] getEncryptedSymmetricKey(
SecretKey toBeEncrypted, EncryptionMaterials materials, Provider cryptoProvider) {
Key keyToDoEncryption;
if (materials.getKeyPair() != null) {
// Do envelope encryption with public key from key pair
keyToDoEncryption = materials.getKeyPair().getPublic();
} else {
// Do envelope encryption with symmetric key
keyToDoEncryption = materials.getSymmetricKey();
}
try {
Cipher cipher;
byte[] toBeEncryptedBytes = toBeEncrypted.getEncoded();
if (cryptoProvider != null) {
cipher = Cipher.getInstance(keyToDoEncryption.getAlgorithm(), cryptoProvider);
} else {
cipher = Cipher.getInstance(keyToDoEncryption.getAlgorithm()); // Use default JCE Provider
}
cipher.init(Cipher.ENCRYPT_MODE, keyToDoEncryption);
return cipher.doFinal(toBeEncryptedBytes);
} catch (Exception e) {
throw new AmazonClientException("Unable to encrypt symmetric key: " + e.getMessage(), e);
}
}
public static Message encrypt(PublicKey pubKey, byte[] input) throws CryptoException {
Message message = new Message();
message.pubKey = pubKey.getEncoded();
KeyGenerator keyGen;
try {
keyGen = KeyGenerator.getInstance("AES");
} catch (NoSuchAlgorithmException e) {
throw new CryptoException(e);
}
keyGen.init(128);
SecretKey secretKey = keyGen.generateKey();
try {
Cipher rsaCipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
rsaCipher.init(Cipher.ENCRYPT_MODE, pubKey);
message.sessionKey = rsaCipher.doFinal(secretKey.getEncoded());
Cipher aesCipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
aesCipher.init(Cipher.ENCRYPT_MODE, secretKey);
AlgorithmParameters params = aesCipher.getParameters();
message.iv = params.getParameterSpec(IvParameterSpec.class).getIV();
message.ciphertext = aesCipher.doFinal(input);
} catch (NoSuchAlgorithmException
| NoSuchPaddingException
| InvalidKeyException
| IllegalBlockSizeException
| BadPaddingException
| InvalidParameterSpecException e) {
throw new CryptoException(e);
}
return message;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
Bitmap bm = null;
bm.compress(Bitmap.CompressFormat.PNG, 100, baos); // bm is the bitmap object
byte[] b = baos.toByteArray();
byte[] keyStart = "this is a key".getBytes();
KeyGenerator kgen;
try {
kgen = KeyGenerator.getInstance("AES");
SecureRandom sr = SecureRandom.getInstance("SHA1PRNG");
sr.setSeed(keyStart);
kgen.init(128, sr); // 192 and 256 bits may not be available
SecretKey skey = kgen.generateKey();
byte[] key = skey.getEncoded();
// encrypt
byte[] encryptedData = encrypt(key, b);
// decrypt
byte[] decryptedData = decrypt(key, encryptedData);
} catch (NoSuchAlgorithmException e) {
// TODO 自動產生的 catch 區塊
e.printStackTrace();
} catch (Exception e) {
// TODO 自動產生的 catch 區塊
e.printStackTrace();
}
}
/**
* 加密
*
* @param content 需要加密的内容
* @param password 加密密码
* @return
*/
public static byte[] encryptAES(String content, String password) {
try {
KeyGenerator kgen = KeyGenerator.getInstance("AES");
kgen.init(128, new SecureRandom(password.getBytes()));
SecretKey secretKey = kgen.generateKey();
byte[] enCodeFormat = secretKey.getEncoded();
SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
Cipher cipher = Cipher.getInstance("AES"); // 创建密码器
byte[] byteContent = content.getBytes("utf-8");
cipher.init(Cipher.ENCRYPT_MODE, key); // 初始化
byte[] result = cipher.doFinal(byteContent);
return result; // 加密
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (NoSuchPaddingException e) {
e.printStackTrace();
} catch (InvalidKeyException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IllegalBlockSizeException e) {
e.printStackTrace();
} catch (BadPaddingException e) {
e.printStackTrace();
}
return null;
}
private DERObject createDERForRecipient(byte[] in, X509Certificate cert)
throws IOException, GeneralSecurityException {
String s = "1.2.840.113549.3.2";
AlgorithmParameterGenerator algorithmparametergenerator =
AlgorithmParameterGenerator.getInstance(s);
AlgorithmParameters algorithmparameters = algorithmparametergenerator.generateParameters();
ByteArrayInputStream bytearrayinputstream =
new ByteArrayInputStream(algorithmparameters.getEncoded("ASN.1"));
ASN1InputStream asn1inputstream = new ASN1InputStream(bytearrayinputstream);
DERObject derobject = asn1inputstream.readObject();
KeyGenerator keygenerator = KeyGenerator.getInstance(s);
keygenerator.init(128);
SecretKey secretkey = keygenerator.generateKey();
Cipher cipher = Cipher.getInstance(s);
cipher.init(1, secretkey, algorithmparameters);
byte[] abyte1 = cipher.doFinal(in);
DEROctetString deroctetstring = new DEROctetString(abyte1);
KeyTransRecipientInfo keytransrecipientinfo =
computeRecipientInfo(cert, secretkey.getEncoded());
DERSet derset = new DERSet(new RecipientInfo(keytransrecipientinfo));
AlgorithmIdentifier algorithmidentifier =
new AlgorithmIdentifier(new DERObjectIdentifier(s), derobject);
EncryptedContentInfo encryptedcontentinfo =
new EncryptedContentInfo(PKCSObjectIdentifiers.data, algorithmidentifier, deroctetstring);
EnvelopedData env = new EnvelopedData(null, derset, encryptedcontentinfo, null);
ContentInfo contentinfo = new ContentInfo(PKCSObjectIdentifiers.envelopedData, env);
return contentinfo.getDERObject();
}
private static boolean writeKeyToFile(Context context, String basename, SecretKey key) {
File file = context.getFileStreamPath(basename);
byte[] keyBytes = key.getEncoded();
FileOutputStream output = null;
if (MAC_KEY_BYTE_COUNT != keyBytes.length) {
Log.e(
TAG,
"writeKeyToFile got key encoded bytes length "
+ keyBytes.length
+ "; expected "
+ MAC_KEY_BYTE_COUNT);
return false;
}
try {
output = new FileOutputStream(file);
output.write(keyBytes);
return true;
} catch (Exception e) {
Log.e(TAG, "Could not write key to '" + file + "': " + e);
return false;
} finally {
try {
if (output != null) {
output.close();
}
} catch (IOException e) {
Log.e(TAG, "Could not close key output stream '" + file + "': " + e);
}
}
}
private static AlgorithmIdentifier determineKeyEncAlg(SecretKey key) {
String algorithm = key.getAlgorithm();
if (algorithm.startsWith("DES")) {
return new AlgorithmIdentifier(
new DERObjectIdentifier("1.2.840.113549.1.9.16.3.6"), new DERNull());
} else if (algorithm.startsWith("RC2")) {
return new AlgorithmIdentifier(
new DERObjectIdentifier("1.2.840.113549.1.9.16.3.7"), new DERInteger(58));
} else if (algorithm.startsWith("AES")) {
int length = key.getEncoded().length * 8;
DERObjectIdentifier wrapOid;
if (length == 128) {
wrapOid = NISTObjectIdentifiers.id_aes128_wrap;
} else if (length == 192) {
wrapOid = NISTObjectIdentifiers.id_aes192_wrap;
} else if (length == 256) {
wrapOid = NISTObjectIdentifiers.id_aes256_wrap;
} else {
throw new IllegalArgumentException("illegal keysize in AES");
}
return new AlgorithmIdentifier(wrapOid); // parameters absent
} else if (algorithm.startsWith("SEED")) {
// parameters absent
return new AlgorithmIdentifier(KISAObjectIdentifiers.id_npki_app_cmsSeed_wrap);
} else if (algorithm.startsWith("Camellia")) {
int length = key.getEncoded().length * 8;
DERObjectIdentifier wrapOid;
if (length == 128) {
wrapOid = NTTObjectIdentifiers.id_camellia128_wrap;
} else if (length == 192) {
wrapOid = NTTObjectIdentifiers.id_camellia192_wrap;
} else if (length == 256) {
wrapOid = NTTObjectIdentifiers.id_camellia256_wrap;
} else {
throw new IllegalArgumentException("illegal keysize in Camellia");
}
return new AlgorithmIdentifier(wrapOid); // parameters must be
// absent
} else {
throw new IllegalArgumentException("unknown algorithm");
}
}
@Test
public void testAESCipherByteArrayByteArray() {
try {
byte[] encrypted = AESCipher.encrypt(MESSAGE, SECRET_KEY.getEncoded());
assertNotNull(encrypted);
assertTrue(encrypted.length > 0);
byte[] result = AESCipher.decrypt(encrypted, SECRET_KEY.getEncoded());
assertNotNull(result);
assertTrue(result.length > 0);
assertArrayEquals(MESSAGE.getBytes(CHARSET), result);
assertEquals(MESSAGE, new String(result, CHARSET));
} catch (AESCipherException | UnsupportedEncodingException e) {
fail(e.getMessage());
}
}
// using PBKDF2 from Sun, an alternative is https://github.com/wg/scrypt
// cf. http://www.unlimitednovelty.com/2012/03/dont-use-bcrypt.html
private static String hash(String password, byte[] salt) throws Exception {
if (password == null || password.length() == 0)
throw new IllegalArgumentException("Empty passwords are not supported.");
SecretKeyFactory f = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
SecretKey key =
f.generateSecret(new PBEKeySpec(password.toCharArray(), salt, iterations, desiredKeyLen));
return Base64.encodeToString(key.getEncoded(), Base64.DEFAULT);
}
public byte[] deCryptData(byte[] toDecrypt, SecretKey key)
throws NoSuchPaddingException, NoSuchAlgorithmException, InvalidKeyException,
BadPaddingException, IllegalBlockSizeException, InvalidAlgorithmParameterException {
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
cipher.init(
Cipher.DECRYPT_MODE, new SecretKeySpec(key.getEncoded(), "AES"), new IvParameterSpec(iv));
return cipher.doFinal(toDecrypt);
}
public static void main(String[] args) throws Exception {
// Gen Key
KeyGenerator keyGenerator = KeyGenerator.getInstance("DES");
SecretKey key = keyGenerator.generateKey();
bytesKey = key.getEncoded();
jdkDES();
bcDES();
}
public static void setKeyCode() {
try {
KeyGenerator keygen = KeyGenerator.getInstance("DES");
SecretKey deskey = keygen.generateKey();
keyCode = baseEncode(deskey.getEncoded());
} catch (Exception e) {
e.printStackTrace();
}
}
