依赖Apache的commons-codec-1.9.jar：
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| package utils;
import java.io.UnsupportedEncodingException;
import java.security.GeneralSecurityException;
import java.security.SecureRandom;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.codec.binary.Base64;
public class AES {
public static String encrypt(String content, String password) throws GeneralSecurityException,
UnsupportedEncodingException {
byte[] byteContent = content.getBytes("utf-8");
return Base64.encodeBase64String(doFinal(byteContent, password, Cipher.ENCRYPT_MODE));
}
public static String decrypt(String content, String password) throws GeneralSecurityException {
byte[] byteContent = Base64.decodeBase64(content);
return new String(doFinal(byteContent, password, Cipher.DECRYPT_MODE));
}
private static byte[] doFinal(byte[] byteContent, String password, int mode) throws GeneralSecurityException {
KeyGenerator kgen = KeyGenerator.getInstance("AES");
kgen.init(128, new SecureRandom(password.getBytes()));
SecretKey secretKey = kgen.generateKey();
byte[] enCodeFormat = secretKey.getEncoded();
SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
Cipher cipher = Cipher.getInstance("AES");
cipher.init(mode, key);
return cipher.doFinal(byteContent);
}
}
|