import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import com.example.test05.ll;
import android.util.Base64;
public class AES {
public static String encrypt(String sSrc, String sKey) {
try {
if (sKey == null) {
System.out.print("Key为空null");
return null;
}
if (sKey.length() != 16) {
System.out.print("Key长度不是16位");
return null;
}
byte[] raw = sKey.getBytes("utf-8");
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
byte[] encrypted = cipher.doFinal(sSrc.getBytes("utf-8"));
return Base64.encodeToString(encrypted, Base64.DEFAULT);// 此处使用BASE64做转码功能,同时能起到2次加密的作用。
} catch (Exception e) {
ll.i(e.toString());
return null;
}
}
public static String decrypt(String sSrc, String sKey) {
try {
if (sKey == null) {
System.out.print("Key为空null");
return null;
}
if (sKey.length() != 16) {
System.out.print("Key长度不是16位");
return null;
}
byte[] raw = sKey.getBytes("utf-8");
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
cipher.init(Cipher.DECRYPT_MODE, skeySpec);
byte[] encrypted1 = Base64.decode(sSrc, Base64.DEFAULT);
try {
byte[] original = cipher.doFinal(encrypted1);
String originalString = new String(original, "utf-8");
return originalString;
} catch (Exception e) {
System.out.println(e.toString());
return null;
}
} catch (Exception ex) {
System.out.println(ex.toString());
return null;
}
}
}