package com.miniportal.util; import java.io.UnsupportedEncodingException;
import java.security.spec.AlgorithmParameterSpec;
import java.security.spec.KeySpec; import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.PBEParameterSpec; public class DesEncrypter { private static Cipher ecipher;
private static Cipher dcipher; private static byte[] salt = {
(byte)0xA9, (byte)0x9B, (byte)0xC8, (byte)0x32,
(byte)0x56, (byte)0x35, (byte)0xE3, (byte)0x03
}; // Iteration count
private static int iterationCount = 24; private static void initEcipher(String key) {
try {
// Create the key
KeySpec keySpec = new PBEKeySpec(key.toCharArray(), salt,
iterationCount);
SecretKey secKey = SecretKeyFactory.getInstance("PBEWithMD5AndDES")
.generateSecret(keySpec);
ecipher = Cipher.getInstance(secKey.getAlgorithm()); // Prepare the parameter to the ciphers
AlgorithmParameterSpec paramSpec = new PBEParameterSpec(salt,
iterationCount); ecipher.init(Cipher.ENCRYPT_MODE, secKey, paramSpec);
} catch (java.security.InvalidAlgorithmParameterException e) {
} catch (java.security.spec.InvalidKeySpecException e) {
} catch (javax.crypto.NoSuchPaddingException e) {
} catch (java.security.NoSuchAlgorithmException e) {
} catch (java.security.InvalidKeyException e) {
}
}
private static void initDcipher(String key){
try {
// Create the key
KeySpec keySpec = new PBEKeySpec(key.toCharArray(), salt,
iterationCount);
SecretKey secKey = SecretKeyFactory.getInstance("PBEWithMD5AndDES")
.generateSecret(keySpec);
dcipher = Cipher.getInstance(secKey.getAlgorithm()); // Prepare the parameter to the ciphers
AlgorithmParameterSpec paramSpec = new PBEParameterSpec(salt,
iterationCount); dcipher.init(Cipher.DECRYPT_MODE, secKey, paramSpec);
} catch (java.security.InvalidAlgorithmParameterException e) {
} catch (java.security.spec.InvalidKeySpecException e) {
} catch (javax.crypto.NoSuchPaddingException e) {
} catch (java.security.NoSuchAlgorithmException e) {
} catch (java.security.InvalidKeyException e) {
}
}
/**
* DES加密
*/
public static String encrypt(String data,String key) {
try {
initEcipher(key);
// Encode the string into bytes using utf-8
byte[] utf8 = data.getBytes("UTF8"); // Encrypt
byte[] enc = ecipher.doFinal(utf8); // Encode bytes to base64 to get a string
return new sun.misc.BASE64Encoder().encode(enc);
} catch (javax.crypto.BadPaddingException e) {
} catch (IllegalBlockSizeException e) {
} catch (UnsupportedEncodingException e) {
}
return null;
} /**
* DES解密
*/
public static String decrypt(String data, String key) {
try {
initDcipher(key);
// Decode base64 to get bytes
byte[] dec = new sun.misc.BASE64Decoder().decodeBuffer(data); // Decrypt
byte[] utf8 = dcipher.doFinal(dec); // Decode using utf-8
return new String(utf8, "UTF8");
} catch (javax.crypto.BadPaddingException e) {
} catch (IllegalBlockSizeException e) {
} catch (UnsupportedEncodingException e) {
} catch (java.io.IOException e) {
}
return null;
}
public static void main(String[] args) {
String key = "bjTGHXtyCDxFleqSbQ";
try {
// Encrypt
String encrypted = DesEncrypter.encrypt("123456", key);
System.out.println(encrypted);
System.out.println("=========BEGIN============");
// Decrypt
String decrypted = DesEncrypter.decrypt(encrypted, key);
System.out.println(decrypted);
System.out.println("==========END============");
} catch (Exception e) {
e.printStackTrace();
}
}
}
import java.security.spec.AlgorithmParameterSpec;
import java.security.spec.KeySpec; import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.PBEParameterSpec; public class DesEncrypter { private static Cipher ecipher;
private static Cipher dcipher; private static byte[] salt = {
(byte)0xA9, (byte)0x9B, (byte)0xC8, (byte)0x32,
(byte)0x56, (byte)0x35, (byte)0xE3, (byte)0x03
}; // Iteration count
private static int iterationCount = 24; private static void initEcipher(String key) {
try {
// Create the key
KeySpec keySpec = new PBEKeySpec(key.toCharArray(), salt,
iterationCount);
SecretKey secKey = SecretKeyFactory.getInstance("PBEWithMD5AndDES")
.generateSecret(keySpec);
ecipher = Cipher.getInstance(secKey.getAlgorithm()); // Prepare the parameter to the ciphers
AlgorithmParameterSpec paramSpec = new PBEParameterSpec(salt,
iterationCount); ecipher.init(Cipher.ENCRYPT_MODE, secKey, paramSpec);
} catch (java.security.InvalidAlgorithmParameterException e) {
} catch (java.security.spec.InvalidKeySpecException e) {
} catch (javax.crypto.NoSuchPaddingException e) {
} catch (java.security.NoSuchAlgorithmException e) {
} catch (java.security.InvalidKeyException e) {
}
}
private static void initDcipher(String key){
try {
// Create the key
KeySpec keySpec = new PBEKeySpec(key.toCharArray(), salt,
iterationCount);
SecretKey secKey = SecretKeyFactory.getInstance("PBEWithMD5AndDES")
.generateSecret(keySpec);
dcipher = Cipher.getInstance(secKey.getAlgorithm()); // Prepare the parameter to the ciphers
AlgorithmParameterSpec paramSpec = new PBEParameterSpec(salt,
iterationCount); dcipher.init(Cipher.DECRYPT_MODE, secKey, paramSpec);
} catch (java.security.InvalidAlgorithmParameterException e) {
} catch (java.security.spec.InvalidKeySpecException e) {
} catch (javax.crypto.NoSuchPaddingException e) {
} catch (java.security.NoSuchAlgorithmException e) {
} catch (java.security.InvalidKeyException e) {
}
}
/**
* DES加密
*/
public static String encrypt(String data,String key) {
try {
initEcipher(key);
// Encode the string into bytes using utf-8
byte[] utf8 = data.getBytes("UTF8"); // Encrypt
byte[] enc = ecipher.doFinal(utf8); // Encode bytes to base64 to get a string
return new sun.misc.BASE64Encoder().encode(enc);
} catch (javax.crypto.BadPaddingException e) {
} catch (IllegalBlockSizeException e) {
} catch (UnsupportedEncodingException e) {
}
return null;
} /**
* DES解密
*/
public static String decrypt(String data, String key) {
try {
initDcipher(key);
// Decode base64 to get bytes
byte[] dec = new sun.misc.BASE64Decoder().decodeBuffer(data); // Decrypt
byte[] utf8 = dcipher.doFinal(dec); // Decode using utf-8
return new String(utf8, "UTF8");
} catch (javax.crypto.BadPaddingException e) {
} catch (IllegalBlockSizeException e) {
} catch (UnsupportedEncodingException e) {
} catch (java.io.IOException e) {
}
return null;
}
public static void main(String[] args) {
String key = "bjTGHXtyCDxFleqSbQ";
try {
// Encrypt
String encrypted = DesEncrypter.encrypt("123456", key);
System.out.println(encrypted);
System.out.println("=========BEGIN============");
// Decrypt
String decrypted = DesEncrypter.decrypt(encrypted, key);
System.out.println(decrypted);
System.out.println("==========END============");
} catch (Exception e) {
e.printStackTrace();
}
}
}
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