Java字符串加密 [英] Java string encrypt
问题描述
我正在使用目标C加密类为我的iPhone应用程序,但我在努力获得相同的功能,从我的Android应用程序在JAVA工作。我的加密code是如下:
的NSString * _secret = @密码;
的NSString * _key = @1428324560542678;
StringEncryption *加密= [[StringEncryption页头]初始化];
的NSData * _secretData = [_secret dataUsingEncoding:NSUTF8StringEncoding]。
CCOptions填充= kCCOptionPKCS7Padding;
NSData的*的EncryptedData = [密码加密:_secretData键:[_键dataUsingEncoding:NSUTF8StringEncoding]填充:放大器;填充]。
我试图复制它在JAVA但我得到一个不同的字符串,当我连接code相同的数据。所以,我做错了什么,但我不能弄明白。这是我的JAVA code:
字节[]键=1428324560542678.getBytes();
密码C = NULL;
尝试 {
C = Cipher.getInstance(AES / ECB / PKCS7Padding);
}赶上(抛出:NoSuchAlgorithmException E){
// TODO自动生成的catch块
e.printStackTrace();
}赶上(NoSuchPaddingException E){
// TODO自动生成的catch块
e.printStackTrace();
}
SecretKeySpec K =新SecretKeySpec(键,AES);
尝试 {
c.init(Cipher.ENCRYPT_MODE中,k);
}赶上(InvalidKeyException将E){
// TODO自动生成的catch块
e.printStackTrace();
}
尝试 {
EditText上tv1passwordText =(EditText上)findViewById(R.id.password);
字符串password = URLEn coder.en code(tv1passwordText.getText()的toString(),UTF-8);
字节[]的EncryptedData = c.doFinal(password.getBytes());
任何人都可以看到我错了?
根据下面我加的GetBytes,但所产生的字符串仍然不同的意见:
字节[]键= NULL;
尝试 {
关键=1428324560542678.getBytes(UTF-8);
}赶上(UnsupportedEncodingException E2){
// TODO自动生成的catch块
e2.printStackTrace();
}
密码C = NULL;
尝试 {
C = Cipher.getInstance(AES / ECB / PKCS7Padding);
}赶上(抛出:NoSuchAlgorithmException E){
// TODO自动生成的catch块
e.printStackTrace();
}赶上(NoSuchPaddingException E){
// TODO自动生成的catch块
e.printStackTrace();
}
SecretKeySpec K =新SecretKeySpec(键,AES);
尝试 {
c.init(Cipher.ENCRYPT_MODE中,k);
}赶上(InvalidKeyException将E){
// TODO自动生成的catch块
e.printStackTrace();
}
尝试 {
EditText上tv1passwordText =(EditText上)findViewById(R.id.password);
。byte []的密码= tv1passwordText.getText()的toString()的GetBytes(UTF-8);
字节[]的EncryptedData = c.doFinal(密码);
下面是加密和解密的例子:
公共静态SecretKey的generateKey()抛出抛出:NoSuchAlgorithmException,InvalidKeySpecException {
返回秘密=新SecretKeySpec(password.getBytes(),AES);
}
公共静态的byte [] encryptMsg(字符串消息,SecretKey的秘密)抛出抛出:NoSuchAlgorithmException,NoSuchPaddingException,InvalidKeyException将,InvalidParameterSpecException,IllegalBlockSizeException,BadPaddingException,UnsupportedEncodingException {
/ *加密该消息。 * /
密码加密= NULL;
密码= Cipher.getInstance(AES / ECB / PKCS5Padding);
cipher.init(Cipher.ENCRYPT_MODE,秘密);
byte []的密文= cipher.doFinal(message.getBytes(UTF-8));
返回密文;
}
公共静态字符串decryptMsg(byte []的密文,SecretKey的秘密)抛出NoSuchPaddingException,抛出:NoSuchAlgorithmException,InvalidParameterSpecException,InvalidAlgorithmParameterException使用,InvalidKeyException将,BadPaddingException,IllegalBlockSizeException,UnsupportedEncodingException {
/ *解密消息,由于衍生encContentValues和初始化向量。 * /
密码加密= NULL;
密码= Cipher.getInstance(AES / ECB / PKCS5Padding);
cipher.init(Cipher.DECRYPT_MODE,秘密);
字符串decryptString =新的String(cipher.doFinal(密文),UTF-8);
返回decryptString;
}
要加密:
SecretKey的秘密= EncUtil.generateKey();
EncUtil.encryptMsg(小于字符串加密>中密))
解密
EncUtil.decryptMsg(小于byte []的>中密))
I am using the encryption class in Objective C for my iPhone app but I am struggling to get the same functionality working in JAVA from my android app. My encryption code is below:
NSString * _secret = @"password";
NSString * _key = @"1428324560542678";
StringEncryption *crypto = [[StringEncryption alloc] init];
NSData *_secretData = [_secret dataUsingEncoding:NSUTF8StringEncoding];
CCOptions padding = kCCOptionPKCS7Padding;
NSData *encryptedData = [crypto encrypt:_secretData key:[_key dataUsingEncoding:NSUTF8StringEncoding] padding:&padding];
I have tried to replicate it in JAVA but I get a different string when I encode the same data. So I am doing something wrong but I can't figure it out. Here is my JAVA code:
byte[] key = "1428324560542678".getBytes();
Cipher c = null;
try {
c = Cipher.getInstance("AES/ECB/PKCS7Padding");
} catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (NoSuchPaddingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
SecretKeySpec k = new SecretKeySpec(key, "AES");
try {
c.init(Cipher.ENCRYPT_MODE, k);
} catch (InvalidKeyException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
EditText tv1passwordText = (EditText) findViewById(R.id.password);
String password = URLEncoder.encode(tv1passwordText.getText().toString(), "UTF-8");
byte[] encryptedData = c.doFinal( password.getBytes());
Can anyone see where I am going wrong?
Based on the comments below I added getBytes but the strings produced are still different:
byte[] key = null;
try {
key = "1428324560542678".getBytes("UTF-8");
} catch (UnsupportedEncodingException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
Cipher c = null;
try {
c = Cipher.getInstance("AES/ECB/PKCS7Padding");
} catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (NoSuchPaddingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
SecretKeySpec k = new SecretKeySpec(key, "AES");
try {
c.init(Cipher.ENCRYPT_MODE, k);
} catch (InvalidKeyException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
EditText tv1passwordText = (EditText) findViewById(R.id.password);
byte[] password = tv1passwordText.getText().toString().getBytes("UTF-8");
byte[] encryptedData = c.doFinal(password);
Here is a sample of encryption and decryption:
public static SecretKey generateKey() throws NoSuchAlgorithmException, InvalidKeySpecException {
return secret = new SecretKeySpec(password.getBytes(), "AES");
}
public static byte[] encryptMsg(String message, SecretKey secret) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, InvalidParameterSpecException, IllegalBlockSizeException, BadPaddingException, UnsupportedEncodingException {
/* Encrypt the message. */
Cipher cipher = null;
cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, secret);
byte[] cipherText = cipher.doFinal(message.getBytes("UTF-8"));
return cipherText;
}
public static String decryptMsg(byte[] cipherText, SecretKey secret) throws NoSuchPaddingException, NoSuchAlgorithmException, InvalidParameterSpecException, InvalidAlgorithmParameterException, InvalidKeyException, BadPaddingException, IllegalBlockSizeException, UnsupportedEncodingException {
/* Decrypt the message, given derived encContentValues and initialization vector. */
Cipher cipher = null;
cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
cipher.init(Cipher.DECRYPT_MODE, secret);
String decryptString = new String(cipher.doFinal(cipherText), "UTF-8");
return decryptString;
}
To encrypt:
SecretKey secret = EncUtil.generateKey();
EncUtil.encryptMsg(<String to Encrypt>, secret))
to decrypt
EncUtil.decryptMsg(<byte[]>, secret))
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