java AES 解密中文乱码的问题？

lei55022033 2009-09-02 11:24:44

public class AES {

private static final String KEY = "zyxwvutsr9876123";

// public static void main(String[] args) throws Exception {
// /*
// 加密用的Key
// 可以用26个字母和数字组成，最好不要用保留字符，虽然不会错，至于怎么裁决，个人看情况而定
// */
// String cKey = "1234567890abcDEF";
// //需要加密的字串
// String cSrc = "nihao";
// //加密
// long lStart = System.currentTimeMillis();
// String enString = AES.Encrypt(cSrc, cKey);
// System.out.println("加密后的字串是：" + enString);
// long lUseTime = System.currentTimeMillis() - lStart;
// System.out.println("加密耗时：" + lUseTime + "毫秒");
// //解密
// lStart = System.currentTimeMillis();
// String DeString = AES.Decrypt(enString, cKey);
// System.out.println("解密后的字串是：" + DeString);
// lUseTime = System.currentTimeMillis() - lStart;
// System.out.println("解密耗时：" + lUseTime + "毫秒");
// }
public String Decrypt(String sSrc) throws Exception {
try {
// //判断Key是否正确
// if (sKey == null) {
// System.out.print("Key为空null");
// return null;
// }
// //判断Key是否为16位
// if (sKey.length() != 16) {
// System.out.print("Key长度不是16位");
// return null;
// }
byte[] raw = KEY.getBytes("UTF8");
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
Cipher cipher = Cipher.getInstance("AES");
cipher.init(Cipher.DECRYPT_MODE, skeySpec);
byte[] encrypted1 = hex2byte(sSrc);
try {
byte[] original = cipher.doFinal(encrypted1);
String originalString = new String(original);
return originalString;
} catch (Exception e) {
System.out.println(e.toString());
return null;
}
} catch (Exception ex) {
System.out.println(ex.toString());
return null;
}
}
//判断Key是否正确
public String Encrypt(String sSrc) throws Exception {
// if (sKey == null) {
// System.out.print("Key为空null");
// return null;
// }
// //判断Key是否为16位
// if (sKey.length() != 16) {
// System.out.print("Key长度不是16位");
// return null;
// }
byte[] raw = KEY.getBytes("UTF8");
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
Cipher cipher = Cipher.getInstance("AES");
cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
byte[] encrypted = cipher.doFinal(sSrc.getBytes());
return byte2hex(encrypted).toLowerCase();
}
public byte[] hex2byte(String strhex) {
if (strhex == null) {
return null;
}
int l = strhex.length();
if (l % 2 == 1) {
return null;
}
byte[] b = new byte[l / 2];
for (int i = 0; i != l / 2; i++) {
b[i] = (byte) Integer.parseInt(strhex.substring(i * 2, i * 2 + 2), 16);
}
return b;
}
public String byte2hex(byte[] b) {
String hs = "";
String stmp = "";
for (int n = 0; n < b.length; n++) {
stmp = (java.lang.Integer.toHexString(b[n] & 0XFF));
if (stmp.length() == 1) {
hs = hs + "0" + stmp;
} else {
hs = hs + stmp;
}
}
return hs.toUpperCase();
}
}

如果是中文的话，解密就会是乱码？如何解决？

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