public static String decryptIt(String value) {
try {
DESKeySpec keySpec = new DESKeySpec(cryptoPass.getBytes("UTF8"));
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
SecretKey key = keyFactory.generateSecret(keySpec);
byte[] encrypedPwdBytes = Base64.decode(value, Base64.DEFAULT);
// cipher is not thread safe
Cipher cipher = Cipher.getInstance("DES");
cipher.init(Cipher.DECRYPT_MODE, key);
byte[] decrypedValueBytes = (cipher.doFinal(encrypedPwdBytes));
String decrypedValue = new String(decrypedValueBytes);
Log.d(TAG, "Decrypted: " + value + " -> " + decrypedValue);
return decrypedValue;
} catch (InvalidKeyException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (InvalidKeySpecException e) {
e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (BadPaddingException e) {
e.printStackTrace();
} catch (NoSuchPaddingException e) {
e.printStackTrace();
} catch (IllegalBlockSizeException e) {
e.printStackTrace();
}
return value;
}
public static void main(String[] args) {
// TODO Auto-generated method stub
try {
RSACryptoProvider rsa = new RSACryptoProvider();
byte[] data = rsa.Encrypt("Michael");
System.out.println(new String(data));
System.out.println(rsa.Decrypt(data));
} catch (InvalidKeyException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (NoSuchPaddingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalBlockSizeException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (BadPaddingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InvalidKeySpecException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/**
* Returns the key pair (private and public key) for the local machine
*
* @param sessionID sessionID for currect machine
*/
public KeyPair loadLocalKeyPair(SessionID sessionID) {
if (sessionID == null) return null;
String accountID = sessionID.getAccountID();
// Load Private Key.
byte[] b64PrivKey = this.store.getPropertyBytes(accountID + ".privateKey");
if (b64PrivKey == null) return null;
PKCS8EncodedKeySpec privateKeySpec = new PKCS8EncodedKeySpec(b64PrivKey);
// Load Public Key.
byte[] b64PubKey = this.store.getPropertyBytes(accountID + ".publicKey");
if (b64PubKey == null) return null;
X509EncodedKeySpec publicKeySpec = new X509EncodedKeySpec(b64PubKey);
PublicKey publicKey;
PrivateKey privateKey;
// Generate KeyPair.
KeyFactory keyFactory;
try {
keyFactory = KeyFactory.getInstance("DSA");
publicKey = keyFactory.generatePublic(publicKeySpec);
privateKey = keyFactory.generatePrivate(privateKeySpec);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
return null;
} catch (InvalidKeySpecException e) {
e.printStackTrace();
return null;
}
return new KeyPair(publicKey, privateKey);
}
/**
* 生成公钥
*
* @param modulus
* @param publicExponent
* @return RSAPublicKey
* @throws Exception
*/
public static RSAPublicKey generateRSAPublicKey(byte[] modulus, byte[] publicExponent)
throws Exception {
KeyFactory keyFac = null;
try {
keyFac =
KeyFactory.getInstance("RSA", new org.bouncycastle.jce.provider.BouncyCastleProvider());
} catch (NoSuchAlgorithmException ex) {
throw new Exception(ex.getMessage());
}
RSAPublicKeySpec pubKeySpec =
new RSAPublicKeySpec(new BigInteger(modulus), new BigInteger(publicExponent));
try {
return (RSAPublicKey) keyFac.generatePublic(pubKeySpec);
} catch (InvalidKeySpecException ex) {
throw new Exception(ex.getMessage());
}
}
private PublicKey loadRemotePublicKeyFromStore(String fullUserId) {
// if (!Address.hasResource(fullUserId))
// return null;
byte[] b64PubKey = this.store.getPropertyBytes(fullUserId + ".publicKey");
if (b64PubKey == null) {
return null;
}
X509EncodedKeySpec publicKeySpec = new X509EncodedKeySpec(b64PubKey);
// Generate KeyPair from spec
KeyFactory keyFactory;
try {
keyFactory = KeyFactory.getInstance(KEY_ALG);
return keyFactory.generatePublic(publicKeySpec);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
return null;
} catch (InvalidKeySpecException e) {
e.printStackTrace();
return null;
}
}
private KeyPair loadLocalKeyPair(String fullUserId) {
PublicKey publicKey;
PrivateKey privateKey;
String userId = Address.stripResource(fullUserId);
try {
// Load Private Key.
byte[] b64PrivKey = this.store.getPropertyBytes(userId + ".privateKey");
if (b64PrivKey == null) return null;
PKCS8EncodedKeySpec privateKeySpec = new PKCS8EncodedKeySpec(b64PrivKey);
// Generate KeyPair.
KeyFactory keyFactory;
keyFactory = KeyFactory.getInstance(KEY_ALG);
privateKey = keyFactory.generatePrivate(privateKeySpec);
// Load Public Key.
byte[] b64PubKey = this.store.getPropertyBytes(userId + ".publicKey");
if (b64PubKey == null) return null;
X509EncodedKeySpec publicKeySpec = new X509EncodedKeySpec(b64PubKey);
publicKey = keyFactory.generatePublic(publicKeySpec);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
return null;
} catch (InvalidKeySpecException e) {
e.printStackTrace();
return null;
}
return new KeyPair(publicKey, privateKey);
}
public Key getDesEncryptionKey() throws PropertyManagerException {
try {
// get the key string
String keyStr = getPropertyObject(DES_ENCRYPTION_KEY).getValue();
// create a DES key spec
DESKeySpec ks = new DESKeySpec(new sun.misc.BASE64Decoder().decodeBuffer(keyStr));
// generate the key from the DES key spec
return SecretKeyFactory.getInstance(DESPasswordEncoder.PASSWORD_ENCRYPTION_ALGORITHM)
.generateSecret(ks);
} catch (NoSuchAlgorithmException e) {
throw new PropertyManagerException(e.getMessage(), e);
} catch (IOException e) {
throw new PropertyManagerException(e.getMessage(), e);
} catch (ObjectNotFoundException e) {
throw new PropertyManagerException(e.getMessage(), e);
} catch (InvalidKeyException e) {
throw new PropertyManagerException(e.getMessage(), e);
} catch (InvalidKeySpecException e) {
throw new PropertyManagerException(e.getMessage(), e);
}
}
protected Key engineUnwrap(byte[] wrappedKey, String wrappedKeyAlgorithm, int wrappedKeyType)
throws InvalidKeyException {
byte[] encoded = null;
try {
encoded = engineDoFinal(wrappedKey, 0, wrappedKey.length);
} catch (BadPaddingException e) {
throw new InvalidKeyException(e.getMessage());
} catch (IllegalBlockSizeException e2) {
throw new InvalidKeyException(e2.getMessage());
}
if (wrappedKeyType == Cipher.SECRET_KEY) {
return new SecretKeySpec(encoded, wrappedKeyAlgorithm);
} else {
try {
KeyFactory kf =
KeyFactory.getInstance(wrappedKeyAlgorithm, BouncyCastleProvider.PROVIDER_NAME);
if (wrappedKeyType == Cipher.PUBLIC_KEY) {
return kf.generatePublic(new X509EncodedKeySpec(encoded));
} else if (wrappedKeyType == Cipher.PRIVATE_KEY) {
return kf.generatePrivate(new PKCS8EncodedKeySpec(encoded));
}
} catch (NoSuchProviderException e) {
throw new InvalidKeyException("Unknown key type " + e.getMessage());
} catch (NoSuchAlgorithmException e) {
throw new InvalidKeyException("Unknown key type " + e.getMessage());
} catch (InvalidKeySpecException e2) {
throw new InvalidKeyException("Unknown key type " + e2.getMessage());
}
throw new InvalidKeyException("Unknown key type " + wrappedKeyType);
}
}
protected Key engineUnwrap(byte[] wrappedKey, String wrappedKeyAlgorithm, int wrappedKeyType)
throws InvalidKeyException, NoSuchAlgorithmException {
byte[] encoded;
try {
if (wrapEngine == null) {
encoded = engineDoFinal(wrappedKey, 0, wrappedKey.length);
} else {
encoded = wrapEngine.unwrap(wrappedKey, 0, wrappedKey.length);
}
} catch (InvalidCipherTextException e) {
throw new InvalidKeyException(e.getMessage());
} catch (BadPaddingException e) {
throw new InvalidKeyException(e.getMessage());
} catch (IllegalBlockSizeException e2) {
throw new InvalidKeyException(e2.getMessage());
}
if (wrappedKeyType == Cipher.SECRET_KEY) {
return new SecretKeySpec(encoded, wrappedKeyAlgorithm);
} else if (wrappedKeyAlgorithm.equals("") && wrappedKeyType == Cipher.PRIVATE_KEY) {
/*
* The caller doesn't know the algorithm as it is part of
* the encrypted data.
*/
try {
PrivateKeyInfo in = PrivateKeyInfo.getInstance(encoded);
PrivateKey privKey = BouncyCastleProvider.getPrivateKey(in);
if (privKey != null) {
return privKey;
} else {
throw new InvalidKeyException(
"algorithm " + in.getPrivateKeyAlgorithm().getAlgorithm() + " not supported");
}
} catch (Exception e) {
throw new InvalidKeyException("Invalid key encoding.");
}
} else {
try {
KeyFactory kf =
KeyFactory.getInstance(wrappedKeyAlgorithm, BouncyCastleProvider.PROVIDER_NAME);
if (wrappedKeyType == Cipher.PUBLIC_KEY) {
return kf.generatePublic(new X509EncodedKeySpec(encoded));
} else if (wrappedKeyType == Cipher.PRIVATE_KEY) {
return kf.generatePrivate(new PKCS8EncodedKeySpec(encoded));
}
} catch (NoSuchProviderException e) {
throw new InvalidKeyException("Unknown key type " + e.getMessage());
} catch (InvalidKeySpecException e2) {
throw new InvalidKeyException("Unknown key type " + e2.getMessage());
}
throw new InvalidKeyException("Unknown key type " + wrappedKeyType);
}
}
public void rsaCypher(String rString, InputStream inputStream, File directory)
throws InvalidKeyException, NoSuchPaddingException, NoSuchAlgorithmException, IOException,
BadPaddingException, IllegalBlockSizeException {
kpg = KeyPairGenerator.getInstance("RSA");
kpg.initialize(1024);
kp = kpg.genKeyPair();
privateKey = kp.getPrivate();
cipher = Cipher.getInstance("RSA");
File root = new File(Environment.getExternalStorageDirectory() + "/Notes/", "rsapublick.txt");
// Read text from file
if (root.exists()) {
StringBuilder text = new StringBuilder();
try {
BufferedReader br = new BufferedReader(new FileReader(root));
String line;
while ((line = br.readLine()) != null) {
text.append(line);
text.append('\n');
}
br.close();
byte[] keyBytes = Base64.decode(text.toString().getBytes("utf-8"), 0);
X509EncodedKeySpec spec = new X509EncodedKeySpec(keyBytes);
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
publicKey = keyFactory.generatePublic(spec);
} catch (IOException e) {
// You'll need to add proper error handling here
} catch (InvalidKeySpecException e) {
e.printStackTrace();
}
} else {
publicKey = kp.getPublic();
byte[] pKbytes = Base64.encode(publicKey.getEncoded(), 0);
String pK = new String(pKbytes);
String pubKey = "-----BEGIN public KEY-----\n" + pK + "-----END public KEY-----\n";
System.out.println(pubKey);
generateNoteOnSD("rsapublick.txt", pK, directorio);
}
this.cipher.init(Cipher.ENCRYPT_MODE, publicKey);
byte[] bytes = getBytesFromInputStream(inputStream);
byte[] encrypted = blockCipher(bytes, Cipher.ENCRYPT_MODE);
FileOutputStream fileOutputStream = new FileOutputStream(directory);
fileOutputStream.write(encrypted);
fileOutputStream.close();
System.out.println("Encryptado RSA Finalizado");
root = new File(Environment.getExternalStorageDirectory() + "/Notes/", "rsaOrivatek.txt");
if (!root.exists()) {
byte[] pKbytes = Base64.encode(getPrivateKey().getEncoded(), 0);
String pK = new String(pKbytes);
String pubKey = "-----BEGIN private KEY-----\n" + pK + "-----END private KEY-----\n";
System.out.println(pubKey);
generateNoteOnSD("rsaOrivatek.txt", pK, directorio);
}
}
public static byte[] passwordEncrypt(char[] password, byte[] plaintext) {
byte[] salt = new byte[8];
Random random = new Random();
random.nextBytes(salt);
PBEKeySpec keySpec = new PBEKeySpec(password);
SecretKeyFactory keyFactory = null;
try {
keyFactory = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
SecretKey key = null;
try {
key = keyFactory.generateSecret(keySpec);
} catch (InvalidKeySpecException e) {
e.printStackTrace();
}
PBEParameterSpec paramSpec = new PBEParameterSpec(salt, ITERATIONS);
Cipher cipher = null;
try {
cipher = Cipher.getInstance("PBEWithMD5AndDES");
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (NoSuchPaddingException e) {
e.printStackTrace();
}
try {
cipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
} catch (InvalidKeyException e) {
e.printStackTrace();
} catch (InvalidAlgorithmParameterException e) {
e.printStackTrace();
}
byte[] ciphertext = new byte[0];
try {
ciphertext = cipher.doFinal(plaintext);
} catch (IllegalBlockSizeException e) {
e.printStackTrace();
} catch (BadPaddingException e) {
e.printStackTrace();
}
ByteArrayOutputStream baos = new ByteArrayOutputStream();
try {
baos.write(salt);
baos.write(ciphertext);
} catch (IOException e) {
e.printStackTrace();
}
return baos.toByteArray();
}
public static void test2() {
try {
String pass1 = PasswordHash.createHash("123");
System.out.println(pass1);
String s =
"1000:7af36fc2d12dcf5b7104dfc47c1ac1fd6e7b12681bede0c5:bcbcab2c9f6689fb2f738e6fe98201089b65d99e037462c5";
System.out.println(s.length());
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (InvalidKeySpecException e) {
e.printStackTrace();
}
}
public static PublicKey func_75896_a(byte p_75896_0_[]) {
try {
X509EncodedKeySpec x509encodedkeyspec = new X509EncodedKeySpec(p_75896_0_);
KeyFactory keyfactory = KeyFactory.getInstance("RSA");
return keyfactory.generatePublic(x509encodedkeyspec);
} catch (NoSuchAlgorithmException nosuchalgorithmexception) {
nosuchalgorithmexception.printStackTrace();
} catch (InvalidKeySpecException invalidkeyspecexception) {
invalidkeyspecexception.printStackTrace();
}
System.err.println("Public key reconstitute failed!");
return null;
}
public static PublicKey func_75896_a(byte[] par0ArrayOfByte) {
try {
X509EncodedKeySpec var1 = new X509EncodedKeySpec(par0ArrayOfByte);
KeyFactory var2 = KeyFactory.getInstance("RSA");
return var2.generatePublic(var1);
} catch (NoSuchAlgorithmException var3) {
var3.printStackTrace();
} catch (InvalidKeySpecException var4) {
var4.printStackTrace();
}
System.err.println("Public key reconstitute failed!");
return null;
}
public static String decrypt(String property) {
SecretKeyFactory keyFactory = null;
String retValue = null;
try {
keyFactory = SecretKeyFactory.getInstance(encrypteAlgorithm);
} catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
SecretKey key = null;
try {
key = keyFactory.generateSecret(new PBEKeySpec(PASSWORD));
} catch (InvalidKeySpecException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Cipher pbeCipher = null;
try {
pbeCipher = Cipher.getInstance(encrypteAlgorithm);
} catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (NoSuchPaddingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
pbeCipher.init(Cipher.DECRYPT_MODE, key, new PBEParameterSpec(SALT, 20));
} catch (InvalidKeyException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InvalidAlgorithmParameterException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
retValue = new String(pbeCipher.doFinal(base64Decode(property)));
} catch (IllegalBlockSizeException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (BadPaddingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return retValue;
}
public static byte[] passwordDecrypt(char[] password, byte[] ciphertext) {
byte[] salt = new byte[8];
ByteArrayInputStream bais = new ByteArrayInputStream(ciphertext);
bais.read(salt, 0, 8);
byte[] remainingCiphertext = new byte[ciphertext.length - 8];
bais.read(remainingCiphertext, 0, ciphertext.length - 8);
PBEKeySpec keySpec = new PBEKeySpec(password);
SecretKeyFactory keyFactory = null;
try {
keyFactory = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
SecretKey secretKey = null;
try {
secretKey = keyFactory.generateSecret(keySpec);
} catch (InvalidKeySpecException e) {
e.printStackTrace();
}
PBEParameterSpec paramSpec = new PBEParameterSpec(salt, ITERATIONS);
Cipher cipher = null;
try {
cipher = Cipher.getInstance("PBEWithMD5AndDES");
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (NoSuchPaddingException e) {
e.printStackTrace();
}
try {
cipher.init(Cipher.DECRYPT_MODE, secretKey, paramSpec);
} catch (InvalidKeyException e) {
e.printStackTrace();
} catch (InvalidAlgorithmParameterException e) {
e.printStackTrace();
}
try {
return cipher.doFinal(remainingCiphertext);
} catch (IllegalBlockSizeException e) {
e.printStackTrace();
} catch (BadPaddingException e) {
e.printStackTrace();
}
return null;
}
/**
* Loads the public key used for encrypting statistical data.
*
* @param file
* @return
*/
public PublicKey loadPublicKey(File file) {
try {
byte[] encodedPublicKey = loadBytesFromFile(file);
return publicKeyFromBytes(encodedPublicKey);
} catch (InvalidKeySpecException e) {
throw new IllegalStateException(
"Unable to create key from encoded specification in "
+ file.getAbsolutePath()
+ "; "
+ e.getMessage(),
e);
}
}
public static void test3() {
try {
String pwd = "123";
String passHash1 = PasswordHash.createHash(pwd);
String passHash2 = PasswordHash.createHash(pwd);
boolean flag1 = PasswordHash.validatePassword(pwd, passHash1);
boolean flag2 = PasswordHash.validatePassword(pwd, passHash2);
System.out.println(flag1);
System.out.println(flag2);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (InvalidKeySpecException e) {
e.printStackTrace();
}
}
public PrivateKey readKey(String name) throws IOException {
RSAPrivateCrtKeySpec sp = readKeyFile(name);
KeyFactory kf;
try {
kf = KeyFactory.getInstance("RSA");
} catch (NoSuchAlgorithmException e) {
throw new IOException("RSA: " + e.toString());
}
PrivateKey pk;
try {
pk = kf.generatePrivate(sp);
} catch (InvalidKeySpecException e) {
throw new IOException(e.toString());
}
return pk;
}
/** @see org.apache.james.jdkim.api.PublicKeyRecord#getPublicKey() */
public PublicKey getPublicKey() {
try {
String p = getValue("p").toString();
byte[] key = Base64.decodeBase64(p.getBytes());
KeyFactory keyFactory;
keyFactory = KeyFactory.getInstance(getValue("k").toString());
X509EncodedKeySpec pubSpec = new X509EncodedKeySpec(key);
RSAPublicKey rsaKey;
rsaKey = (RSAPublicKey) keyFactory.generatePublic(pubSpec);
return rsaKey;
} catch (NoSuchAlgorithmException e) {
throw new IllegalStateException("Unknown algorithm: " + e.getMessage());
} catch (InvalidKeySpecException e) {
throw new IllegalStateException("Invalid key spec: " + e.getMessage());
}
}
public void loadPrivateKey(String privateKeyStr) throws Exception {
try {
BASE64Decoder base64Decoder = new BASE64Decoder();
byte[] buffer = base64Decoder.decodeBuffer(privateKeyStr);
PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(buffer);
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
this.privateKey = (RSAPrivateKey) keyFactory.generatePrivate(keySpec);
} catch (NoSuchAlgorithmException e) {
throw new Exception("无此算法");
} catch (InvalidKeySpecException e) {
e.printStackTrace();
throw new Exception("私钥非法");
} catch (IOException e) {
throw new Exception("私钥数据内容读取错误");
} catch (NullPointerException e) {
throw new Exception("私钥数据为空");
}
}
/**
* 将公钥解码
*
* @param privKeyEncryped
* @return
*/
public PublicKey decodePublicKey(String encodedKey) {
byte[] keyBytes = Base64.decode(encodedKey, Base64.DEFAULT);
X509EncodedKeySpec keySpec = new X509EncodedKeySpec(keyBytes);
KeyFactory keyFactory = null;
PublicKey publicKey = null;
try {
keyFactory = KeyFactory.getInstance(CIP_ALGO);
publicKey = keyFactory.generatePublic(keySpec);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (InvalidKeySpecException e) {
e.printStackTrace();
}
return publicKey;
}
public static Key password2Key(String password, SecretKeyFactory... factories) {
if (Strings.isNullOrEmpty(password)) {
if (pbeLog.isDebugEnabled()) {
pbeLog.debug(
"The given password is a empty(null), using default password {}", DEFAULT_PASSWORD);
}
password = DEFAULT_PASSWORD;
}
PBEKeySpec keySpec = new PBEKeySpec(password.toCharArray());
SecretKeyFactory skf = getDefaultKeyFactory();
if (factories != null && factories.length > 0 && factories[0] != null) {
skf = factories[0];
}
try {
return skf.generateSecret(keySpec);
} catch (InvalidKeySpecException ex) {
pbeLog.warn("PBEKeySpec keySpec is error - " + ex.getMessage());
}
return null;
}
/**
* Loads the public key from a byte array
*
* @param keyBytes the public key
* @return if an error occures null will be returned
*/
public static PublicKey loadPublicECDSAKey(byte[] keyBytes) {
X509EncodedKeySpec spec = new X509EncodedKeySpec(keyBytes);
KeyFactory keyFactory;
try {
keyFactory = KeyFactory.getInstance("ECDSA", "SC");
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
return null;
} catch (NoSuchProviderException e) {
e.printStackTrace();
return null;
}
PublicKey key;
try {
key = keyFactory.generatePublic(spec);
} catch (InvalidKeySpecException e) {
e.printStackTrace();
return null;
}
return key;
}
/**
* 使用口令解密还原私钥
*
* @return
*/
public PrivateKey decryptPrivateKey(String passphrase, String privKeyEncryped) {
byte[] seeds = null;
byte[] raw = Base64.decode(privKeyEncryped, Base64.DEFAULT);
byte[] decrypted = null;
try {
seeds = getRawKey(passphrase.getBytes());
SecretKeySpec skeySpec = new SecretKeySpec(seeds, PASS_ALGO);
Cipher cipher = Cipher.getInstance(PASS_ALGO);
cipher.init(Cipher.DECRYPT_MODE, skeySpec);
decrypted = cipher.doFinal(raw);
} 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();
}
PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(decrypted);
KeyFactory keyFactory = null;
PrivateKey privateKey = null;
try {
keyFactory = KeyFactory.getInstance(CIP_ALGO);
privateKey = keyFactory.generatePrivate(keySpec);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (InvalidKeySpecException e) {
e.printStackTrace();
}
return privateKey;
}
/**
* Given the remaining lines in a BIND9 style DSA private key, parse the key info and translate it
* into a JCA private key.
*
* @throws NoSuchAlgorithmException if the DSA algorithm is not available.
*/
private PrivateKey parsePrivateDSA(StringTokenizer lines) throws NoSuchAlgorithmException {
BigInteger p = null;
BigInteger q = null;
BigInteger g = null;
BigInteger x = null;
while (lines.hasMoreTokens()) {
String line = lines.nextToken();
if (line == null) continue;
if (line.startsWith("#")) continue;
String val = value(line);
if (val == null) continue;
byte[] data = base64.fromString(val);
if (line.startsWith("Prime(p): ")) {
p = new BigInteger(1, data);
} else if (line.startsWith("Subprime(q): ")) {
q = new BigInteger(1, data);
} else if (line.startsWith("Base(g): ")) {
g = new BigInteger(1, data);
} else if (line.startsWith("Private_value(x): ")) {
x = new BigInteger(1, data);
}
}
try {
KeySpec spec = new DSAPrivateKeySpec(x, p, q, g);
if (mDSAKeyFactory == null) {
mDSAKeyFactory = KeyFactory.getInstance("DSA");
}
return mDSAKeyFactory.generatePrivate(spec);
} catch (InvalidKeySpecException e) {
e.printStackTrace();
return null;
}
}
/**
* Loads the public key for the specified sessionID. If there is no key stored, you will get
* 'null'
*/
public PublicKey loadRemotePublicKey(SessionID sessionID) {
if (sessionID == null) return null;
String userID = sessionID.getUserID();
byte[] b64PubKey = this.store.getPropertyBytes(userID + ".publicKey");
if (b64PubKey == null) return null;
X509EncodedKeySpec publicKeySpec = new X509EncodedKeySpec(b64PubKey);
// Generate KeyPair.
KeyFactory keyFactory;
try {
keyFactory = KeyFactory.getInstance("DSA");
return keyFactory.generatePublic(publicKeySpec);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
return null;
} catch (InvalidKeySpecException e) {
e.printStackTrace();
return null;
}
}
public boolean login() throws LoginException {
System.out.println("Login Module - login called");
if (callbackHandler == null) {
throw new LoginException("Oops, callbackHandler is null");
}
Callback[] callbacks = new Callback[2];
callbacks[0] = new NameCallback("name:");
callbacks[1] = new PasswordCallback("password:"******"Oops, IOException calling handle on callbackHandler");
} catch (UnsupportedCallbackException e) {
throw new LoginException(
"Oops, UnsupportedCallbackException calling handle on callbackHandler");
}
NameCallback nameCallback = (NameCallback) callbacks[0];
PasswordCallback passwordCallback = (PasswordCallback) callbacks[1];
loggedUser = new User();
loggedUser.setUsername(nameCallback.getName());
loggedUser.setPassword(String.valueOf(passwordCallback.getPassword()));
MyDatabase database = null;
try {
database = new MyDatabase(options);
database.createDatabaseConnection();
if (database.loginUser(loggedUser.getUsername(), loggedUser.getPassword())) {
loggedUser.setRole(database.getUserRole(loggedUser));
System.out.println("Il database ha tornato il valore");
succeeded = true;
} else {
System.out.println("Il database non ha tornato il valore");
succeeded = false;
}
} catch (SQLException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (InvalidKeyException e) {
e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (NoSuchPaddingException e) {
e.printStackTrace();
} catch (IllegalBlockSizeException e) {
e.printStackTrace();
} catch (BadPaddingException e) {
e.printStackTrace();
} catch (InvalidKeySpecException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return succeeded;
}
@Override
public void onClick(View view) {
Utils.Log("Send clicked");
// If the message field is not empty
if (!messageText.getText().toString().isEmpty()) {
final Message message = new Message();
message.setSender(username);
message.setRecipient(conversation.getUsername());
// If DHKE was completed and a key exists
if (!dbManager.getAESKey(conversation.getUsername()).isEmpty()) {
String signature = "";
String key = dbManager.getAESKey(conversation.getUsername());
byte[] iv = Crypto.GenerateRandomIV();
final String plainText = messageText.getText().toString();
final String cipherText = Crypto.AESencrypt(key, plainText, iv);
final String base64IV = Base64.encodeToString(iv, Base64.NO_WRAP);
try {
PrivateKey RSAKeySign =
Crypto.RSAStringToPrivateKey(dbManager.getRSAKeySignaturePrivate());
signature =
Base64.encodeToString(
Crypto.RSASign(Base64.decode(cipherText, Base64.NO_WRAP), RSAKeySign),
Base64.NO_WRAP);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (InvalidKeySpecException e) {
e.printStackTrace();
} catch (NoSuchProviderException e) {
e.printStackTrace();
} catch (InvalidKeyException e) {
e.printStackTrace();
} catch (SignatureException e) {
e.printStackTrace();
}
message.setMessage(cipherText);
message.setIv(base64IV);
message.setSignature(signature);
new HttpHandler() {
@Override
public HttpUriRequest getHttpRequestMethod() {
HttpPost httpPost = new HttpPost(Utils.SERVER_SEND_MESSAGE);
List<NameValuePair> nameValuePairs = new ArrayList<>();
nameValuePairs.add(new BasicNameValuePair("sender", message.getSender()));
nameValuePairs.add(new BasicNameValuePair("recipient", message.getRecipient()));
nameValuePairs.add(new BasicNameValuePair("message", message.getMessage()));
nameValuePairs.add(new BasicNameValuePair("iv", message.getIv()));
nameValuePairs.add(new BasicNameValuePair("signature", message.getSignature()));
try {
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return httpPost;
}
@Override
public void onResponse(String result) {
Utils.Log("HttpResult: " + result);
if (conversation.isEncrypted().equals("true")) {
message.setMessage(
Crypto.AESencrypt(
conversationPass,
plainText,
Base64.decode(message.getIv(), Base64.NO_WRAP)));
message.setEncrypted(true);
dbManager.addMessage(message);
message.setEncrypted(false);
message.setMessage(plainText);
messages.add(message);
adapter.notifyDataSetChanged();
} else {
message.setMessage(plainText);
message.setEncrypted(false);
dbManager.addMessage(message);
messages.add(message);
adapter.notifyDataSetChanged();
}
messageList.setSelection(messages.size() + 1);
}
}.execute();
messageText.setText("");
}
// DHKE was not complete yet, store messages unencrypted temporarily
// and then encrypt and send them once the exchange is complete
else {
message.setEncrypted(false);
message.setMessage(messageText.getText().toString());
message.setIv(Base64.encodeToString(Crypto.GenerateRandomIV(), Base64.NO_WRAP));
dbManager.addMessage(message);
messages.add(message);
adapter.notifyDataSetChanged();
messageList.setSelection(adapter.getCount() - 1);
messageText.setText("");
}
}
}
/**
* Retrieve the encryption information for this uri.
*
* @param mUri either an instance URI (if previously saved) or a form URI
* @param instanceMetadata
* @return
*/
public static EncryptedFormInformation getEncryptedFormInformation(
Uri mUri, FormController.InstanceMetadata instanceMetadata) {
ContentResolver cr = Collect.getInstance().getContentResolver();
// fetch the form information
String formId;
String formVersion;
PublicKey pk;
Base64Wrapper wrapper;
Cursor formCursor = null;
try {
if (cr.getType(mUri) == InstanceProviderAPI.InstanceColumns.CONTENT_ITEM_TYPE) {
// chain back to the Form record...
String[] selectionArgs = null;
String selection = null;
Cursor instanceCursor = null;
try {
instanceCursor = cr.query(mUri, null, null, null, null);
if (instanceCursor.getCount() != 1) {
Log.e(t, "Not exactly one record for this instance!");
return null; // save unencrypted.
}
instanceCursor.moveToFirst();
String jrFormId =
instanceCursor.getString(
instanceCursor.getColumnIndex(InstanceProviderAPI.InstanceColumns.JR_FORM_ID));
int idxJrVersion =
instanceCursor.getColumnIndex(InstanceProviderAPI.InstanceColumns.JR_VERSION);
if (!instanceCursor.isNull(idxJrVersion)) {
selectionArgs = new String[] {jrFormId, instanceCursor.getString(idxJrVersion)};
selection =
FormsProviderAPI.FormsColumns.JR_FORM_ID
+ " =? AND "
+ FormsProviderAPI.FormsColumns.JR_VERSION
+ "=?";
} else {
selectionArgs = new String[] {jrFormId};
selection =
FormsProviderAPI.FormsColumns.JR_FORM_ID
+ " =? AND "
+ FormsProviderAPI.FormsColumns.JR_VERSION
+ " IS NULL";
}
} finally {
if (instanceCursor != null) {
instanceCursor.close();
}
}
formCursor =
cr.query(
FormsProviderAPI.FormsColumns.CONTENT_URI, null, selection, selectionArgs, null);
if (formCursor.getCount() != 1) {
Log.e(t, "Not exactly one blank form matches this jr_form_id");
return null; // save unencrypted
}
formCursor.moveToFirst();
} else if (cr.getType(mUri) == FormsProviderAPI.FormsColumns.CONTENT_ITEM_TYPE) {
formCursor = cr.query(mUri, null, null, null, null);
if (formCursor.getCount() != 1) {
Log.e(t, "Not exactly one blank form!");
return null; // save unencrypted.
}
formCursor.moveToFirst();
}
formId =
formCursor.getString(formCursor.getColumnIndex(FormsProviderAPI.FormsColumns.JR_FORM_ID));
if (formId == null || formId.length() == 0) {
Log.e(t, "No FormId specified???");
return null;
}
int idxVersion = formCursor.getColumnIndex(FormsProviderAPI.FormsColumns.JR_VERSION);
int idxBase64RsaPublicKey =
formCursor.getColumnIndex(FormsProviderAPI.FormsColumns.BASE64_RSA_PUBLIC_KEY);
formVersion = formCursor.isNull(idxVersion) ? null : formCursor.getString(idxVersion);
String base64RsaPublicKey =
formCursor.isNull(idxBase64RsaPublicKey)
? null
: formCursor.getString(idxBase64RsaPublicKey);
if (base64RsaPublicKey == null || base64RsaPublicKey.length() == 0) {
return null; // this is legitimately not an encrypted form
}
int version = android.os.Build.VERSION.SDK_INT;
if (version < 8) {
Log.e(t, "Phone does not support encryption.");
return null; // save unencrypted
}
// this constructor will throw an exception if we are not
// running on version 8 or above (if Base64 is not found).
try {
wrapper = new Base64Wrapper();
} catch (ClassNotFoundException e) {
Log.e(t, "Phone does not have Base64 class but API level is " + version);
e.printStackTrace();
return null; // save unencrypted
}
// OK -- Base64 decode (requires API Version 8 or higher)
byte[] publicKey = wrapper.decode(base64RsaPublicKey);
X509EncodedKeySpec publicKeySpec = new X509EncodedKeySpec(publicKey);
KeyFactory kf;
try {
kf = KeyFactory.getInstance(RSA_ALGORITHM);
} catch (NoSuchAlgorithmException e) {
Log.e(t, "Phone does not support RSA encryption.");
e.printStackTrace();
return null;
}
try {
pk = kf.generatePublic(publicKeySpec);
} catch (InvalidKeySpecException e) {
e.printStackTrace();
Log.e(t, "Invalid RSA public key.");
return null;
}
} finally {
if (formCursor != null) {
formCursor.close();
}
}
// submission must have an OpenRosa metadata block with a non-null
// instanceID value.
if (instanceMetadata.instanceId == null) {
Log.e(t, "No OpenRosa metadata block or no instanceId defined in that block");
return null;
}
// For now, prevent encryption if the BouncyCastle implementation is not present.
// https://code.google.com/p/opendatakit/issues/detail?id=918
try {
Cipher.getInstance(EncryptionUtils.SYMMETRIC_ALGORITHM, ENCRYPTION_PROVIDER);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
Log.e(t, "No BouncyCastle implementation of symmetric algorithm!");
return null;
} catch (NoSuchProviderException e) {
e.printStackTrace();
Log.e(t, "No BouncyCastle provider for implementation of symmetric algorithm!");
return null;
} catch (NoSuchPaddingException e) {
e.printStackTrace();
Log.e(t, "No BouncyCastle provider for padding implementation of symmetric algorithm!");
return null;
}
return new EncryptedFormInformation(formId, formVersion, instanceMetadata, pk, wrapper);
}