AES加密，解决了同步问题，和随机密钥和固定密钥，多端通信加密不一致解决办法
1、密钥随机生成。
import java.security.InvalidAlgorithmParameterException; import java.security.InvalidKeyException; import java.security.NoSuchAlgorithmException; import java.security.SecureRandom; import java.security.spec.AlgorithmParameterSpec; import javax.crypto.BadPaddingException; import javax.crypto.Cipher; import javax.crypto.IllegalBlockSizeException; import javax.crypto.KeyGenerator; import javax.crypto.NoSuchPaddingException; import javax.crypto.SecretKey; import javax.crypto.spec.IvParameterSpec; /** * @ClassName: AESUtil * @Description: 对cookie进行加密解密 * @author * @date 2015-9-23 上午9:07:18 * */ public class AesUtils { public static final String logalrithm = "AES/CBC/PKCS5Padding"; private static byte[] keyValue = new byte[] { 22,25,-35,-45,25,98,-55,-45,10,20,-45,25, 26,-95,25,-65,-11,-99,85,45,-62,10,-0,11, -35,48,-98,65,-32,14,-78,25,36,-56,-45,-45, 12,15,-35,-75,15,-14,62,-25,33,-45,55,68,-88 }; private static byte[] iv = new byte[] { -12,35,-25,65,45,-87,95,-22,-15,45,55,-66,32,5-4,84,55 }; private static SecretKey key; private static AlgorithmParameterSpec paramSpec; static{ KeyGenerator kgen; try { kgen = KeyGenerator.getInstance("AES"); kgen.init(128, new SecureRandom(keyValue)); key = kgen.generateKey(); paramSpec = new IvParameterSpec(iv); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } } /** * @Title: encrypt * @Description: 加密，使用指定数据源生成密钥，使用用户数据作为算法参数进行AES加密 * @return String 返回类型 * @param msg 加密的数据 * @return * @date 2015-9-23 上午9:09:20 * @throws */ public static String encrypt(String msg) { String str = ""; try { Cipher ecipher = Cipher.getInstance(logalrithm); ecipher.init(Cipher.ENCRYPT_MODE, key, paramSpec); str = asHex(ecipher.doFinal(msg.getBytes())); } catch (BadPaddingException e) { e.printStackTrace(); } catch (InvalidKeyException e) { e.printStackTrace(); } catch (InvalidAlgorithmParameterException e) { e.printStackTrace(); } catch (IllegalBlockSizeException e) { e.printStackTrace(); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } catch (NoSuchPaddingException e) { e.printStackTrace(); } return str; } /** * @Title: decrypt * @Description: 解密，对生成的16进制的字符串进行解密 * @return String 返回类型 * @author WUWeidong * @param value * @return * @date 2015-9-23 上午9:10:01 * @throws */ public static String decrypt(String value) { try { Cipher ecipher = Cipher.getInstance(logalrithm); ecipher.init(Cipher.DECRYPT_MODE, key, paramSpec); return new String(ecipher.doFinal(asBin(value))); } catch (BadPaddingException e) { e.printStackTrace(); } catch (InvalidKeyException e) { e.printStackTrace(); } catch (InvalidAlgorithmParameterException e) { e.printStackTrace(); } catch (IllegalBlockSizeException e) { e.printStackTrace(); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } catch (NoSuchPaddingException e) { e.printStackTrace(); } return ""; } /** * @Title: asHex * @Description: 将字节数组转换成16进制字符串 * @return String 返回类型 * @param buf * @return * @date 2015-9-23 上午9:10:25 * @throws */ private static String asHex(byte[] buf) { StringBuffer strbuf = new StringBuffer(buf.length * 2); int i; for (i = 0; i < buf.length; i++) { if (((int) buf[i] & 0xff) < 0x10){ strbuf.append("0"); } strbuf.append(Long.toString((int) buf[i] & 0xff, 16)); } return strbuf.toString(); } /** * @Title: asBin * @Description: 将16进制字符串转换成字节数组 * @return byte[] 返回类型 * @author WUWeidong * @param src * @return * @date 2015-9-23 上午9:10:52 * @throws */ private static byte[] asBin(String src) { if (src.length() < 1){ return null; } byte[] encrypted = new byte[src.length() / 2]; for (int i = 0; i < src.length() / 2; i++) { int high = Integer.parseInt(src.substring(i * 2, i * 2 + 1), 16); int low = Integer.parseInt(src.substring(i * 2 + 1, i * 2 + 2), 16); encrypted[i] = (byte) (high * 16 + low); } return encrypted; } public static void main(String[] args) { String msg="897807300"; System.out.println(encrypt(msg)); System.out.println(decrypt(encrypt(msg))); } }
2、密钥固定，加密通信的时候可以使用
package com.cmcc.omp.securityplatform.base; import java.io.UnsupportedEncodingException; import java.security.InvalidAlgorithmParameterException; import java.security.InvalidKeyException; import java.security.Key; import java.security.NoSuchAlgorithmException; import javax.crypto.BadPaddingException; import javax.crypto.Cipher; import javax.crypto.IllegalBlockSizeException; import javax.crypto.NoSuchPaddingException; import javax.crypto.spec.IvParameterSpec; import javax.crypto.spec.SecretKeySpec; /** * @ClassName: AESUtil * @Description: 对cookie进行加密解密 * @date 2015-9-23 上午9:07:18 * */ public class AesUtils { public static final String logalrithm = "AES/CBC/PKCS5Padding"; public static final String bm = "utf-8"; private static byte[] keyValue = new byte[] { 22,-35,-45,25,98,-55,-45,10,35,-45,25,26,-95,25,-35,48 }; private static byte[] iv = new byte[] { -12,35,-25,65,45,-87,95,-22,-15,45,55,-66,32,5-4,84,55 }; private static Key keySpec; private static IvParameterSpec ivSpec; static{ keySpec = new SecretKeySpec(keyValue, "AES"); ivSpec = new IvParameterSpec(iv); } /** * @Title: encrypt * @Description: 加密，使用指定数据源生成密钥，使用用户数据作为算法参数进行AES加密 * @return String 返回类型 * @param msg 加密的数据 * @return * @date 2015-9-23 上午9:09:20 * @throws */ public static String encrypt(String msg) { byte[] encryptedData = null; try { Cipher ecipher = Cipher.getInstance(logalrithm); ecipher.init(Cipher.ENCRYPT_MODE, keySpec, ivSpec); encryptedData = ecipher.doFinal(msg.getBytes(bm)); } catch (IllegalBlockSizeException | BadPaddingException e) { e.printStackTrace(); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } catch (NoSuchPaddingException e) { e.printStackTrace(); } catch (InvalidKeyException e) { e.printStackTrace(); } catch (InvalidAlgorithmParameterException e) { e.printStackTrace(); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } return asHex(encryptedData); } /** * @Title: decrypt * @Description: 解密，对生成的16进制的字符串进行解密 * @return String 返回类型 * @param value * @return * @date 2015-9-23 上午9:10:01 * @throws */ public static String decrypt(String value) { try { Cipher ecipher = Cipher.getInstance(logalrithm); ecipher.init(Cipher.DECRYPT_MODE, keySpec, ivSpec); return new String(ecipher.doFinal(asBin(value))); } catch (BadPaddingException e) { System.out.println("解密错误："+value); e.printStackTrace(); } catch (IllegalBlockSizeException e) { System.out.println("解密错误："+value); e.printStackTrace(); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } catch (NoSuchPaddingException e) { e.printStackTrace(); } catch (InvalidKeyException e) { e.printStackTrace(); } catch (InvalidAlgorithmParameterException e) { e.printStackTrace(); } return ""; } /** * @Title: asHex * @Description: 将字节数组转换成16进制字符串 * @return String 返回类型 * @param buf * @return * @date 2015-9-23 上午9:10:25 * @throws */ private static String asHex(byte[] buf) { StringBuffer strbuf = new StringBuffer(buf.length * 2); int i; for (i = 0; i < buf.length; i++) { if (((int) buf[i] & 0xff) < 0x10){ strbuf.append("0"); } strbuf.append(Long.toString((int) buf[i] & 0xff, 16)); } return strbuf.toString(); } /** * @Title: asBin * @Description: 将16进制字符串转换成字节数组 * @return byte[] 返回类型 * @param src * @return * @date 2015-9-23 上午9:10:52 * @throws */ private static byte[] asBin(String src) { if (src.length() < 1){ return null; } byte[] encrypted = new byte[src.length() / 2]; for (int i = 0; i < src.length() / 2; i++) { int high = Integer.parseInt(src.substring(i * 2, i * 2 + 1), 16); int low = Integer.parseInt(src.substring(i * 2 + 1, i * 2 + 2), 16); encrypted[i] = (byte) (high * 16 + low); } return encrypted; } public static void main(String[] args) { String userid = "897807300@qq.com"; String token = "8aa8690f65f080aee595d8781e7044a7eacda7a86520786db0838136554920b6"; System.out.println(encrypt(userid)); System.out.println(decrypt(encrypt(userid))); } }
