import javax.crypto.*;
import javax.crypto.spec.*;
public class MyAES {
/*
* 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
// 加密
long lStart
= System.
currentTimeMillis();
// String enString = MyAES.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 = MyAES.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");
}
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 = sKey.getBytes("ASCII");
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
Cipher cipher = Cipher.getInstance("AES");
cipher.init(Cipher.DECRYPT_MODE, skeySpec);
byte[] encrypted1 = sSrc;
try {
byte[] original = cipher.doFinal(encrypted1);
return original;
System.
out.
println(e.
toString());
return null;
}
System.
out.
println(ex.
toString());
return null;
}
}
// 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 = sKey.getBytes("ASCII");
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
Cipher cipher = Cipher.getInstance("AES");
cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
byte[] encrypted = cipher.doFinal(sSrc);
return encrypted;
}
public static byte[] parseHexStr2Byte
(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 static String parseByte2HexStr
(byte[] b
) {
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();
}
}
//java/5888