/**
* Decrypts a String encrypted encrypted by the encrypt(String, Key) function.
*
* @param encryptedVersion The encrypted string
* @param keyData The byte[] representation of the Key used in encryption.
* @return The decrypted String.
* @throws EncryptionException
* @throws InvalidKeyException
* @throws NoSuchAlgorithmException
* @throws NoSuchPaddingException
* @throws IllegalBlockSizeException
* @throws BadPaddingException
* @throws IOException
*/
public static byte[] decrypt(byte[] encryptedVersion, Key salt) throws EncryptionException {
// Get a cipher object.
byte[] result = null;
Cipher cipher;
try {
cipher = Cipher.getInstance(EncryptionAlgorithm.DES.toString());
cipher.init(Cipher.DECRYPT_MODE, salt);
result = cipher.doFinal(encryptedVersion);
} catch (NoSuchAlgorithmException e) {
throw new EncryptionException(e);
} catch (NoSuchPaddingException e) {
throw new EncryptionException(e);
} catch (InvalidKeyException e) {
throw new EncryptionException(e);
} catch (IllegalBlockSizeException e) {
throw new EncryptionException(e);
} catch (BadPaddingException e) {
throw new EncryptionException(e);
}
return result;
}
public void writeSession(HttpServletRequest request, HttpServletResponse response)
throws NoSuchPaddingException, NoSuchAlgorithmException, InvalidKeyException,
BadPaddingException, IllegalBlockSizeException {
SparkHttpRequestWrapper sparkRequest = (SparkHttpRequestWrapper) request;
if (!sparkRequest.sessionAccessed()) return;
CookieSession session = (CookieSession) request.getSession();
// serialize session
byte[] sessionBytes = conf.asByteArray(session);
// encrypt content
final Cipher symmetricalCipher = Cipher.getInstance(symmetricEncryptionAlgorithm);
symmetricalCipher.init(Cipher.ENCRYPT_MODE, this.symmetricEncryptionKey);
byte[] encryptedBytes = symmetricalCipher.doFinal(sessionBytes);
// sign content
byte[] signature = sign(encryptedBytes);
byte[] cookieContent = new byte[encryptedBytes.length + signature.length];
System.arraycopy(encryptedBytes, 0, cookieContent, 0, encryptedBytes.length);
System.arraycopy(
signature, 0, cookieContent, cookieContent.length - signature.length, signature.length);
String base64CookieContent = Base64.getEncoder().encodeToString(cookieContent);
addCookie(base64CookieContent, response);
}
public static byte[] encrypt(Key key, byte[] b)
throws BadPaddingException, IllegalBlockSizeException, InvalidKeyException,
NoSuchAlgorithmException, NoSuchPaddingException {
Cipher hasher = Cipher.getInstance("RSA");
hasher.init(Cipher.ENCRYPT_MODE, key);
return hasher.doFinal(b);
}
@Kroll.method
public String decode(HashMap args) {
// decode string back to plain text
//
KrollDict arg = new KrollDict(args);
String txt = arg.getString("cipherText");
byte[] bytesEncoded = Base64.decode(txt, 0);
String keyString = arg.getString("privateKey");
PrivateKey key;
try {
byte[] encodedKey = Base64.decode(keyString, 0);
PKCS8EncodedKeySpec x509KeySpec = new PKCS8EncodedKeySpec(encodedKey);
KeyFactory keyFact = KeyFactory.getInstance("RSA", "BC");
key = keyFact.generatePrivate(x509KeySpec);
} catch (Exception e) {
return "error key";
}
byte[] decodedBytes = null;
try {
Cipher c = Cipher.getInstance("RSA");
c.init(Cipher.DECRYPT_MODE, key);
decodedBytes = c.doFinal(bytesEncoded);
} catch (Exception e) {
Log.e(TAG, "RSA decryption error " + e.toString());
return "error";
}
return new String(decodedBytes);
}
/**
* Encrypts the provided String and returns the cipher text.
*
* @param text the String to encrypt
* @return the encrypted String
* @throws InvalidKeyException
* @throws BadPaddingException
* @throws IllegalBlockSizeException
*/
public String encrypt(String text)
throws InvalidKeyException, IllegalBlockSizeException, BadPaddingException {
cipher.init(Cipher.ENCRYPT_MODE, aesKey);
byte[] encryptedText = cipher.doFinal(text.getBytes());
return new String(Base64.encodeBase64(encryptedText));
}
/**
* This method: Encrypts bytes using a cipher. Generates MAC for intialization vector of the
* cipher Generates MAC for encrypted data Returns a byte array consisting of the following
* concatenated together: |MAC for cnrypted Data | MAC for Init Vector | Encrypted Data |
*
* @param bytes The byte array to be encrypted.
* @return the encrypted byte array.
*/
public byte[] encrypt(byte[] bytes) {
byte[] securedata = null;
try {
// Generate IV
SecureRandom rand = new SecureRandom();
byte[] iv = new byte[16];
rand.nextBytes(iv);
IvParameterSpec ivspec = new IvParameterSpec(iv);
Cipher encryptCipher = Cipher.getInstance(CIPHER_CODE);
encryptCipher.init(Cipher.ENCRYPT_MODE, sk, ivspec);
Mac encryptMac = Mac.getInstance(MAC_CODE);
encryptMac.init(sk);
encryptMac.update(iv);
// encrypt the plaintext
byte[] encdata = encryptCipher.doFinal(bytes);
byte[] macBytes = encryptMac.doFinal(encdata);
byte[] tmp = concatBytes(macBytes, iv);
securedata = concatBytes(tmp, encdata);
} catch (NoSuchAlgorithmException
| NoSuchPaddingException
| InvalidKeyException
| InvalidAlgorithmParameterException
| IllegalStateException
| IllegalBlockSizeException
| BadPaddingException e) {
if (LOGGER.isLoggable(Level.SEVERE)) {
LOGGER.log(
Level.SEVERE,
"Unexpected exception initializing encryption." + " No encryption will be performed.",
e);
}
return null;
}
return securedata;
}
/** {@inheritDoc} */
@Override
public byte[] encrypt(final byte[] bytes) throws EncyptionException {
try {
final javax.crypto.Cipher cipher = javax.crypto.Cipher.getInstance("AES/CBC/PKCS5Padding");
cipher.init(javax.crypto.Cipher.ENCRYPT_MODE, this.secretKey);
final AlgorithmParameters params = cipher.getParameters();
final byte[] ivBytes = params.getParameterSpec(IvParameterSpec.class).getIV();
final byte[] dataBytes = cipher.doFinal(bytes);
final byte[] secret = ArrayOfBytesType.TYPE.toBytes(ivBytes, dataBytes);
return secret;
} catch (final NoSuchAlgorithmException problem) {
throw new EncyptionException(problem);
} catch (final NoSuchPaddingException problem) {
throw new EncyptionException(problem);
} catch (final InvalidKeyException problem) {
throw new EncyptionException(problem);
} catch (final InvalidParameterSpecException problem) {
throw new EncyptionException(problem);
} catch (final IllegalBlockSizeException problem) {
throw new EncyptionException(problem);
} catch (final BadPaddingException problem) {
throw new EncyptionException(problem);
}
}
private static byte[] encryptPassword(byte[] password, byte[] salt) {
try {
byte[] encryptedPassword = null;
PBEKeySpec pbeKeySpec = new PBEKeySpec(getPassword(), salt, 1024, 256);
SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance(ENCRYPTION_ALGORITHM);
SecretKey secretKey = secretKeyFactory.generateSecret(pbeKeySpec);
PBEParameterSpec pbeParameterSpec = new PBEParameterSpec(salt, 10);
Cipher cipher = Cipher.getInstance(ENCRYPTION_ALGORITHM);
cipher.init(Cipher.ENCRYPT_MODE, secretKey, pbeParameterSpec);
encryptedPassword = cipher.doFinal(password);
return encryptedPassword;
} catch (NoSuchAlgorithmException e) {
LogHelper.log(e);
} catch (InvalidKeySpecException e) {
LogHelper.log(e);
} catch (InvalidKeyException e) {
LogHelper.log(e);
} catch (IllegalBlockSizeException e) {
LogHelper.log(e);
} catch (BadPaddingException e) {
LogHelper.log(e);
} catch (NoSuchPaddingException e) {
LogHelper.log(e);
} catch (InvalidAlgorithmParameterException e) {
LogHelper.log(e);
}
return null;
}
/**
* 解密
*
* @param content 密文
* @param key 商户私钥
* @return 解密后的字符串
*/
public static String decrypt(String content, String key) throws Exception {
PrivateKey prikey = getPrivateKey(key);
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.DECRYPT_MODE, prikey);
InputStream ins = new ByteArrayInputStream(Base64.decode(content));
ByteArrayOutputStream writer = new ByteArrayOutputStream();
// rsa解密的字节大小最多是128，将需要解密的内容，按128位拆开解密
byte[] buf = new byte[128];
int bufl;
while ((bufl = ins.read(buf)) != -1) {
byte[] block = null;
if (buf.length == bufl) {
block = buf;
} else {
block = new byte[bufl];
for (int i = 0; i < bufl; i++) {
block[i] = buf[i];
}
}
writer.write(cipher.doFinal(block));
}
return new String(writer.toByteArray(), "utf-8");
}
private static byte[] decrypt(byte[] raw, byte[] encrypted) throws Exception {
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
Cipher cipher = Cipher.getInstance("AES");
cipher.init(Cipher.DECRYPT_MODE, skeySpec);
byte[] decrypted = cipher.doFinal(encrypted);
return decrypted;
}
/**
* Decrypt an encrypted PKCS 8 format private key.
*
* <p>Based on ghstark's post on Aug 6, 2006 at
* http://forums.sun.com/thread.jspa?threadID=758133&messageID=4330949
*
* @param encryptedPrivateKey The raw data of the private key
* @param keyFile The file containing the private key
*/
private KeySpec decryptPrivateKey(byte[] encryptedPrivateKey, String keyPassword)
throws GeneralSecurityException {
EncryptedPrivateKeyInfo epkInfo;
try {
epkInfo = new EncryptedPrivateKeyInfo(encryptedPrivateKey);
} catch (IOException ex) {
// Probably not an encrypted key.
return null;
}
char[] keyPasswd = keyPassword.toCharArray();
SecretKeyFactory skFactory = SecretKeyFactory.getInstance(epkInfo.getAlgName());
Key key = skFactory.generateSecret(new PBEKeySpec(keyPasswd));
Cipher cipher = Cipher.getInstance(epkInfo.getAlgName());
cipher.init(Cipher.DECRYPT_MODE, key, epkInfo.getAlgParameters());
try {
return epkInfo.getKeySpec(cipher);
} catch (InvalidKeySpecException ex) {
getLogger().error("signapk: Password for private key may be bad.");
throw ex;
}
}
PGPDataDecryptor createDataDecryptor(boolean withIntegrityPacket, int encAlgorithm, byte[] key)
throws PGPException {
try {
SecretKey secretKey = new SecretKeySpec(key, PGPUtil.getSymmetricCipherName(encAlgorithm));
final Cipher c = createStreamCipher(encAlgorithm, withIntegrityPacket);
if (withIntegrityPacket) {
byte[] iv = new byte[c.getBlockSize()];
c.init(Cipher.DECRYPT_MODE, secretKey, new IvParameterSpec(iv));
} else {
c.init(Cipher.DECRYPT_MODE, secretKey);
}
return new PGPDataDecryptor() {
public InputStream getInputStream(InputStream in) {
return new CipherInputStream(in, c);
}
public int getBlockSize() {
return c.getBlockSize();
}
public PGPDigestCalculator getIntegrityCalculator() {
return new SHA1PGPDigestCalculator();
}
};
} catch (PGPException e) {
throw e;
} catch (Exception e) {
throw new PGPException("Exception creating cipher", e);
}
}
/**
* 解密
*
* @param key 解密的密钥
* @param raw 已经加密的数据
* @return 解密后的明文
* @throws Exception
*/
public static byte[] decrypt(Key key, byte[] raw) throws Exception {
try {
Cipher cipher =
Cipher.getInstance("RSA", new org.bouncycastle.jce.provider.BouncyCastleProvider());
cipher.init(Cipher.DECRYPT_MODE, key);
int blockSize = cipher.getBlockSize();
ByteArrayOutputStream bout = new ByteArrayOutputStream(64);
int j = 0;
while (raw.length - j * blockSize > 0) {
bout.write(cipher.doFinal(raw, j * blockSize, blockSize));
j++;
}
return bout.toByteArray();
} catch (Exception e) {
throw new Exception(e.getMessage());
}
}
private void testAlgorithm(
String name, byte[] keyBytes, byte[] iv, byte[] plainText, byte[] cipherText)
throws Exception {
SecretKey key = new SecretKeySpec(keyBytes, name);
Cipher in = Cipher.getInstance(name, "BC");
Cipher out = Cipher.getInstance(name, "BC");
if (iv != null) {
in.init(Cipher.ENCRYPT_MODE, key, new IvParameterSpec(iv));
out.init(Cipher.DECRYPT_MODE, key, new IvParameterSpec(iv));
} else {
in.init(Cipher.ENCRYPT_MODE, key);
out.init(Cipher.DECRYPT_MODE, key);
}
byte[] enc = in.doFinal(plainText);
if (!areEqual(enc, cipherText)) {
fail(name + ": cipher text doesn't match");
}
byte[] dec = out.doFinal(enc);
if (!areEqual(dec, plainText)) {
fail(name + ": plain text doesn't match");
}
}
private DESedeEncryptor() {
try {
// 检测是否有 TripleDES 加密的供应程序
// 如无，明确地安装SunJCE 供应程序
try {
Cipher.getInstance(DESEDE);
} catch (Exception e) {
logger.error("Installling SunJCE provider.");
Provider sunjce = new com.sun.crypto.provider.SunJCE();
Security.addProvider(sunjce);
}
// 得到 DESSede keys
keyFactory = SecretKeyFactory.getInstance(DESEDE);
// 创建一个 DESede 密码
encryptCipher = Cipher.getInstance(DESEDE);
decryptCipher = Cipher.getInstance(DESEDE);
// 为 CBC 模式创建一个用于初始化的 vector 对象
// IvParameters = new IvParameterSpec(new byte[] { 12, 34, 56,
// 78, 90,
// 87, 65, 43 });
} catch (Exception e) {
// 记录加密或解密操作错误
logger.error("It's not support DESede encrypt arithmetic in this system!", e);
}
}
/**
* Encode password using DES encryption with given challenge.
*
* @param challenge a random set of bytes.
* @param password a password
* @return DES hash of password and challenge
*/
public ByteBuffer encodePassword(ByteBuffer challenge, String password) {
if (challenge.length != 16)
throw new RuntimeException("Challenge must be exactly 16 bytes long.");
// VNC password consist of up to eight ASCII characters.
byte[] key = {0, 0, 0, 0, 0, 0, 0, 0}; // Padding
byte[] passwordAsciiBytes = password.getBytes(RfbConstants.US_ASCII_CHARSET);
System.arraycopy(passwordAsciiBytes, 0, key, 0, Math.min(password.length(), 8));
// Flip bytes (reverse bits) in key
for (int i = 0; i < key.length; i++) {
key[i] = flipByte(key[i]);
}
try {
KeySpec desKeySpec = new DESKeySpec(key);
SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance("DES");
SecretKey secretKey = secretKeyFactory.generateSecret(desKeySpec);
Cipher cipher = Cipher.getInstance("DES/ECB/NoPadding");
cipher.init(Cipher.ENCRYPT_MODE, secretKey);
ByteBuffer buf =
new ByteBuffer(cipher.doFinal(challenge.data, challenge.offset, challenge.length));
return buf;
} catch (Exception e) {
throw new RuntimeException("Cannot encode password.", e);
}
}
public static String encrypt(String originalText, String password) {
String enc = "";
try {
// cara penggunaan JCE u/ melakukan enkripsi berdasarkan metode enkripsi PBE, yg dipilih
// (tidak
// mesti PBEWithMD5AndDES
PBEKeySpec keySpec = new PBEKeySpec(password.toCharArray());
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(METHOD);
SecretKey secretKey = keyFactory.generateSecret(keySpec);
PBEParameterSpec parameterSpec = new PBEParameterSpec(salt, iterationCount);
cipher = Cipher.getInstance(METHOD);
cipher.init(Cipher.ENCRYPT_MODE, secretKey, parameterSpec);
outputArray = originalText.getBytes(encoding);
cryptedText = new ByteArrayOutputStream();
CipherOutputStream out = new CipherOutputStream(cryptedText, cipher);
out.write(outputArray);
out.flush();
out.close();
return cryptedText.toString();
} catch (IOException ex) {
Logger.getLogger(EncDec.class.getName()).log(Level.SEVERE, null, ex);
} catch (InvalidKeyException ex) {
Logger.getLogger(EncDec.class.getName()).log(Level.SEVERE, null, ex);
} catch (InvalidAlgorithmParameterException ex) {
Logger.getLogger(EncDec.class.getName()).log(Level.SEVERE, null, ex);
} catch (NoSuchPaddingException ex) {
Logger.getLogger(EncDec.class.getName()).log(Level.SEVERE, null, ex);
} catch (InvalidKeySpecException ex) {
Logger.getLogger(EncDec.class.getName()).log(Level.SEVERE, null, ex);
} catch (NoSuchAlgorithmException ex) {
Logger.getLogger(EncDec.class.getName()).log(Level.SEVERE, null, ex);
}
return "error";
}
private static void testEncryptDecryptLong(
Cipher c, Cipher d, String string, long key, long value)
throws ShortBufferException, IllegalBlockSizeException, BadPaddingException {
byte[] data = new byte[3 + 8 + 8];
byte[] output = new byte[c.getOutputSize(data.length)];
byte[] result = new byte[3 + 8 + 8];
byte[] salt = string.getBytes();
System.arraycopy(salt, 0, data, 0, salt.length);
longToByteArray2(key, data, 3);
longToByteArray2(value, data, 11);
c.doFinal(data, 0, data.length, output);
d.doFinal(output, 0, output.length, result);
System.out.println("in: " + toHex(data));
System.out.println("enc: " + toHex(output));
System.out.println("dec: " + toHex(result));
for (int i = 0; i < data.length; i++) {
if (data[i] != result[i]) throw new IllegalStateException("darn gosh");
}
}
/**
* 加密（使用DES算法）
*
* @param txt 需要加密的文本
* @param key 密钥
* @return 成功加密的文本
* @throws InvalidKeySpecException
* @throws InvalidKeyException
* @throws NoSuchPaddingException
* @throws IllegalBlockSizeException
* @throws BadPaddingException
*/
private static String enCrypto(String txt, String key)
throws InvalidKeySpecException, InvalidKeyException, NoSuchPaddingException,
IllegalBlockSizeException, BadPaddingException {
StringBuffer sb = new StringBuffer();
DESKeySpec desKeySpec = new DESKeySpec(key.getBytes());
SecretKeyFactory skeyFactory = null;
Cipher cipher = null;
try {
skeyFactory = SecretKeyFactory.getInstance("DES");
cipher = Cipher.getInstance("DES");
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
SecretKey deskey = skeyFactory != null ? skeyFactory.generateSecret(desKeySpec) : null;
if (cipher != null) {
cipher.init(Cipher.ENCRYPT_MODE, deskey);
}
byte[] cipherText = cipher != null ? cipher.doFinal(txt.getBytes()) : new byte[0];
for (int n = 0; n < cipherText.length; n++) {
String stmp = (java.lang.Integer.toHexString(cipherText[n] & 0XFF));
if (stmp.length() == 1) {
sb.append("0" + stmp);
} else {
sb.append(stmp);
}
}
return sb.toString().toUpperCase();
}
public byte[] readPrivateKeyToPKCSBytes(char[] encpass, String salt, String iv, String keyData)
throws GeneralSecurityException {
Key key = getKeyDecryptionKey(encpass, Base64.decode(salt));
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING", PROVIDER_NAME);
cipher.init(Cipher.DECRYPT_MODE, key, new IvParameterSpec(Base64.decode(iv)));
return cipher.doFinal(Base64.decode(keyData));
}
/** {@inheritDoc} */
@Override
public byte[] decrypt(final byte[] bytes) {
final byte[][] secret = ArrayOfBytesType.TYPE.fromBytes(bytes);
final byte[] ivBytes = secret[0];
final byte[] dataBytes = secret[1];
try {
final javax.crypto.Cipher cipher = javax.crypto.Cipher.getInstance("AES/CBC/PKCS5Padding");
final IvParameterSpec ivSpec = new IvParameterSpec(ivBytes);
cipher.init(javax.crypto.Cipher.DECRYPT_MODE, this.secretKey, ivSpec);
final byte[] decryptedBytes = cipher.doFinal(dataBytes);
return decryptedBytes;
} catch (final NoSuchAlgorithmException problem) {
throw new EncyptionException(problem);
} catch (final NoSuchPaddingException problem) {
throw new EncyptionException(problem);
} catch (final InvalidKeyException problem) {
throw new EncyptionException(problem);
} catch (final InvalidAlgorithmParameterException problem) {
throw new EncyptionException(problem);
} catch (final IllegalBlockSizeException problem) {
throw new EncyptionException(problem);
} catch (final BadPaddingException problem) {
throw new EncyptionException(problem);
}
}
public Key unwrapSecretKey(RSAPrivateKey privKey, String wrapped)
throws GeneralSecurityException {
byte[] wrappedBytes = Base64.decode(wrapped);
Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding", PROVIDER_NAME);
cipher.init(Cipher.UNWRAP_MODE, privKey);
return cipher.unwrap(wrappedBytes, "AES", Cipher.SECRET_KEY);
}
@Kroll.method
public String encode(HashMap args) {
// encode text to cipher text
//
KrollDict arg = new KrollDict(args);
String txt = arg.getString("plainText");
String keyString = arg.getString("publicKey");
byte[] encodedBytes = null;
Key key;
try {
byte[] encodedKey = Base64.decode(keyString, 0);
X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(encodedKey);
KeyFactory keyFact = KeyFactory.getInstance("RSA", "BC");
key = keyFact.generatePublic(x509KeySpec);
} catch (Exception e) {
return "error key";
}
try {
Cipher c = Cipher.getInstance("RSA");
c.init(Cipher.ENCRYPT_MODE, key);
encodedBytes = c.doFinal(txt.getBytes());
} catch (Exception e) {
Log.e(TAG, "RSA encryption error " + e.toString());
}
return Base64.encodeToString(encodedBytes, Base64.NO_WRAP);
}
/**
* Creates a symmetric cipher in the specified mode from the given symmetric key and IV. The given
* crypto provider will provide the encryption implementation. If the crypto provider is null,
* then the default JCE crypto provider will be used.
*
* @deprecated no longer used and will be removed in the future
*/
@Deprecated
public static Cipher createSymmetricCipher(
SecretKey symmetricCryptoKey, int encryptMode, Provider cryptoProvider, byte[] initVector) {
try {
Cipher cipher;
if (cryptoProvider != null) {
cipher = Cipher.getInstance(JceEncryptionConstants.SYMMETRIC_CIPHER_METHOD, cryptoProvider);
} else {
cipher = Cipher.getInstance(JceEncryptionConstants.SYMMETRIC_CIPHER_METHOD);
}
if (initVector != null) {
cipher.init(encryptMode, symmetricCryptoKey, new IvParameterSpec(initVector));
} else {
cipher.init(encryptMode, symmetricCryptoKey);
}
return cipher;
} catch (Exception e) {
throw new AmazonClientException(
"Unable to build cipher: "
+ e.getMessage()
+ "\nMake sure you have the JCE unlimited strength policy files installed and "
+ "configured for your JVM: http://www.ngs.ac.uk/tools/jcepolicyfiles",
e);
}
}
/**
* Decrypts the provided and String and returns the unencrypted String.
*
* @param cipherText the encrypted text to decrypt.
* @return the unencrypted text
* @throws InvalidKeyException
* @throws BadPaddingException
* @throws IllegalBlockSizeException
*/
public String decrypt(String cipherText)
throws InvalidKeyException, IllegalBlockSizeException, BadPaddingException {
cipher.init(Cipher.DECRYPT_MODE, aesKey);
byte[] decodeBase64 = Base64.decodeBase64(cipherText.getBytes());
String decryptedText = new String(cipher.doFinal(decodeBase64));
return decryptedText;
}
/**
* 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 String[] receiveTransactionId(byte[] data)
throws RemoteException, InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException,
IllegalBlockSizeException, BadPaddingException {
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.DECRYPT_MODE, privateKey);
byte[] cipherData = cipher.doFinal(data);
String x = new String(cipherData);
System.out.println(x);
if (x.equals("e3050620f38846eeab342d293f13e043")) {
String val = UUID.randomUUID().toString().replaceAll("-", "");
transactionDetails[0] = val;
System.out.println(transactionDetails[0]);
String bits = "";
Random r = new Random();
for (int l = 0; l < 2048; l++) {
int y = 0;
if (r.nextBoolean()) y = 1;
bits += y;
}
transactionDetails[1] = bits;
System.out.println(transactionDetails[1]);
System.out.println(transactionDetails);
}
return transactionDetails;
}
/**
* Decrypts an encrypted symmetric key using the provided encryption materials and returns it as a
* SecretKey object.
*
* @deprecated no longer used and will be removed in the future
*/
@Deprecated
private static SecretKey getDecryptedSymmetricKey(
byte[] encryptedSymmetricKeyBytes, EncryptionMaterials materials, Provider cryptoProvider) {
Key keyToDoDecryption;
if (materials.getKeyPair() != null) {
// Do envelope decryption with private key from key pair
keyToDoDecryption = materials.getKeyPair().getPrivate();
} else {
// Do envelope decryption with symmetric key
keyToDoDecryption = materials.getSymmetricKey();
}
try {
Cipher cipher;
if (cryptoProvider != null) {
cipher = Cipher.getInstance(keyToDoDecryption.getAlgorithm(), cryptoProvider);
} else {
cipher = Cipher.getInstance(keyToDoDecryption.getAlgorithm());
}
cipher.init(Cipher.DECRYPT_MODE, keyToDoDecryption);
byte[] decryptedSymmetricKeyBytes = cipher.doFinal(encryptedSymmetricKeyBytes);
return new SecretKeySpec(
decryptedSymmetricKeyBytes, JceEncryptionConstants.SYMMETRIC_KEY_ALGORITHM);
} catch (Exception e) {
throw new AmazonClientException(
"Unable to decrypt symmetric key from object metadata : " + e.getMessage(), e);
}
}
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());
}
/**
* Decryption.
*
* @param data the data to be decrypted
* @return the decrypted data
* @throws Exception if necessary
*/
@Override
public byte[] internalDecrypt(byte[] data) throws Exception {
Cipher cipher = Cipher.getInstance(TRANSFORMATION);
cipher.init(Cipher.DECRYPT_MODE, secretKey, ivParam);
return cipher.doFinal(data);
}
