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android base64 和 aes 加密 解密
package pioneerbarcode.ccw.com.encryptanddecode;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.text.TextUtils;
import android.util.Base64;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import pioneerbarcode.ccw.com.encryptanddecode.utils.AesUtils;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private Button btnBase64New;
private Button btnBase64Older;
private TextView tvOlder;
private String strOlderData;
private TextView tvJiaMiData;
private TextView tvJieMiData;
private Button btnAesJiaMi;
private Button btnAesjieMi;
private TextView tvAesJiaMiData;
private TextView tvAesJieMiData;
private static String AESPASSWORD = "hehehe";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setView();
setListener();
}
private void setListener() {
btnBase64New.setOnClickListener(this);
btnBase64Older.setOnClickListener(this);
btnAesJiaMi.setOnClickListener(this);
btnAesjieMi.setOnClickListener(this);
}
private void setView() {
btnBase64New = (Button) findViewById(R.id.btn_base64_jiemi);
btnBase64Older = (Button) findViewById(R.id.btn_base64_jiami);
tvOlder = (TextView) findViewById(R.id.tv_older);
tvJiaMiData = http://www.mamicode.com/(TextView) findViewById(R.id.tv_jiami_data);
tvJieMiData = http://www.mamicode.com/(TextView) findViewById(R.id.tv_jiemi_data);
btnAesJiaMi = (Button) findViewById(R.id.btn_Aes_jiami);
btnAesjieMi = (Button) findViewById(R.id.btn_Aes_jiemi);
tvAesJiaMiData = http://www.mamicode.com/(TextView) findViewById(R.id.tv_Aes_jiami_data);
tvAesJieMiData = http://www.mamicode.com/(TextView) findViewById(R.id.tv_Aes_jiemi_data);
strOlderData = http://www.mamicode.com/tvOlder.getText().toString().trim();
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_base64_jiemi:
//base64 解密
base64Decode();
break;
case R.id.btn_base64_jiami:
//Base64加密
base64Encrypt();
break;
case R.id.btn_Aes_jiami:
//Aes 加密
aesEncrypt();
break;
case R.id.btn_Aes_jiemi:
//Aes 解密
aesDecode();
break;
default:
break;
}
}
/**
* Aes 解密
*/
private void aesDecode() {
try {
if (!TextUtils.isEmpty(tvAesJiaMiData.getText().toString().toString().trim())) {
// Aes 解密后的数据
String data = http://www.mamicode.com/AesUtils.decrypt(AESPASSWORD, tvAesJiaMiData.getText().toString().trim());
tvAesJieMiData.setText(data);
}
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* Aes 加密
*/
private void aesEncrypt() {
try {
String data = http://www.mamicode.com/AesUtils.encrypt(AESPASSWORD, strOlderData);
//加密后的串
tvAesJiaMiData.setText(data);
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* base64解密
*/
private void base64Decode() {
if (!TextUtils.isEmpty(tvJiaMiData.getText().toString().trim())) {
String data = http://www.mamicode.com/new String(Base64.decode(tvJiaMiData.getText().toString().trim().getBytes(), Base64.DEFAULT));
tvJieMiData.setText(data);
}
}
/**
* base64加密
*/
private void base64Encrypt() {
//下面是两种方式 加密
//// 在这里使用的是encode方式，返回的是byte类型加密数据，可使用new String转为String类型
// String olderData_base64 = new String(Base64.encode(strOlderData.getBytes(), Base64.DEFAULT));
//// 加密传入的数据是byte类型的，并非使用decode方法将原始数据转二进制，String类型的数据 使用 str.getBytes()即可
String olderData_base64 = Base64.encodeToString(strOlderData.getBytes(), Base64.DEFAULT);
tvJiaMiData.setText(olderData_base64);
}
}
public class AesUtils {
public static String encrypt(String seed, String cleartext) throws Exception {
byte[] rawKey = getRawKey(seed.getBytes());
byte[] result = encrypt(rawKey, cleartext.getBytes());
return toHex(result);
}
public static String decrypt(String seed, String encrypted) throws Exception {
byte[] rawKey = getRawKey(seed.getBytes());
byte[] enc = toByte(encrypted);
byte[] result = decrypt(rawKey, enc);
return new String(result);
}
private static byte[] getRawKey(byte[] seed) throws Exception {
KeyGenerator kgen = KeyGenerator.getInstance("AES");
SecureRandom sr = SecureRandom.getInstance("SHA1PRNG", "Crypto");
sr.setSeed(seed);
kgen.init(128, sr); // 192 and 256 bits may not be available
SecretKey skey = kgen.generateKey();
byte[] raw = skey.getEncoded();
return raw;
}
private static byte[] encrypt(byte[] raw, byte[] clear) throws Exception {
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
Cipher cipher = Cipher.getInstance("AES");
cipher.init(Cipher.ENCRYPT_MODE, skeySpec,new IvParameterSpec(new byte[cipher.getBlockSize()]));
byte[] encrypted = cipher.doFinal(clear);
return encrypted;
}
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,new IvParameterSpec(new byte[cipher.getBlockSize()]));
byte[] decrypted = cipher.doFinal(encrypted);
return decrypted;
}
private static String toHex(String txt) {
return toHex(txt.getBytes());
}
private static String fromHex(String hex) {
return new String(toByte(hex));
}
private static byte[] toByte(String hexString) {
int len = hexString.length()/2;
byte[] result = new byte[len];
for (int i = 0; i < len; i++)
result[i] = Integer.valueOf(hexString.substring(2*i, 2*i+2), 16).byteValue();
return result;
}
private static String toHex(byte[] buf) {
if (buf == null)
return "";
StringBuffer result = new StringBuffer(2*buf.length);
for (int i = 0; i < buf.length; i++) {
appendHex(result, buf[i]);
}
return result.toString();
}
private final static String HEX = "0123456789ABCDEF";
private static void appendHex(StringBuffer sb, byte b) {
sb.append(HEX.charAt((b>>4)&0x0f)).append(HEX.charAt(b&0x0f));
}
}
经过验证可用
android base64 和 aes 加密 解密
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