AES加密解密（linuxwindow加密解密效果一致，支持中文）

Posted 2020-08-02 Share112

转自： http://sunfish.iteye.com/blog/2169158

 

import java.io.UnsupportedEncodingException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;

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.SecretKeySpec;

import org.apache.axis.encoding.Base64;

public class AES {
	private static int length=128;
	/**
	 * 加密
	 * 
	 * @param content
	 *            需要加密的内容
	 * @param password
	 *            加密密码
	 * @return
	 * @throws NoSuchAlgorithmException
	 * @throws NoSuchPaddingException
	 * @throws UnsupportedEncodingException
	 * @throws InvalidKeyException
	 * @throws BadPaddingException
	 * @throws IllegalBlockSizeException
	 */
	private static byte[] encrypt(String content, String password)
			throws Exception {

		KeyGenerator kgen = KeyGenerator.getInstance("AES");
                SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG" ); 
                secureRandom.setSeed(password.getBytes()); 
		kgen.init(length, secureRandom);
		SecretKey secretKey = kgen.generateKey();
		byte[] enCodeFormat = secretKey.getEncoded();
		SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
		Cipher cipher = Cipher.getInstance("AES");// 创建密码器
		byte[] byteContent = content.getBytes("utf-8");
		cipher.init(Cipher.ENCRYPT_MODE, key);// 初始化
		byte[] result = cipher.doFinal(byteContent);
		return result; // 加密

	}

	/**
	 * 解密
	 * 
	 * @param content
	 *            待解密内容
	 * @param password
	 *            解密密钥
	 * @return
	 */
	private static byte[] decrypt(byte[] content, String password)
			throws Exception {

		KeyGenerator kgen = KeyGenerator.getInstance("AES");
                 SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG" ); 
                  secureRandom.setSeed(password.getBytes()); 
		kgen.init(length, secureRandom);
		SecretKey secretKey = kgen.generateKey();
		byte[] enCodeFormat = secretKey.getEncoded();
		SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
		Cipher cipher = Cipher.getInstance("AES");// 创建密码器
		cipher.init(Cipher.DECRYPT_MODE, key);// 初始化
		byte[] result = cipher.doFinal(content);
		return result; // 加密
                
             

	}

//	/**
//	 * 将二进制转换成16进制
//	 * 
//	 * @param buf
//	 * @return
//	 */
//	public static String parseByte2HexStr(byte buf[]) {
//		StringBuffer sb = new StringBuffer();
//		for (int i = 0; i < buf.length; i++) {
//			String hex = Integer.toHexString(buf[i] & 0xFF);
//			if (hex.length() == 1) {
//				hex = ‘0‘ + hex;
//			}
//			sb.append(hex.toUpperCase());
//		}
//		return sb.toString();
//	}
//
//	/**
//	 * 将16进制转换为二进制
//	 * 
//	 * @param hexStr
//	 * @return
//	 */
//	public static byte[] parseHexStr2Byte(String hexStr) {
//		if (hexStr.length() < 1)
//			return null;
//		byte[] result = new byte[hexStr.length() / 2];
//		for (int i = 0; i < hexStr.length() / 2; i++) {
//			int high = Integer.parseInt(hexStr.substring(i * 2, i * 2 + 1), 16);
//			int low = Integer.parseInt(hexStr.substring(i * 2 + 1, i * 2 + 2),
//					16);
//			result[i] = (byte) (high * 16 + low);
//		}
//		return result;
//	}

	/**
	 * 加密
	 * 
	 * @param content
	 *            需要加密的内容
	 * @param password
	 *            加密密码
	 * @return
	 */
	public static byte[] encrypt2(String content, String password) {
		try {
			SecretKeySpec key = new SecretKeySpec(password.getBytes(), "AES");
			Cipher cipher = Cipher.getInstance("AES/ECB/NoPadding");
			byte[] byteContent = content.getBytes("utf-8");
			cipher.init(Cipher.ENCRYPT_MODE, key);// 初始化
			byte[] result = cipher.doFinal(byteContent);
			return result; // 加密
		} catch (NoSuchAlgorithmException e) {
			e.printStackTrace();
		} catch (NoSuchPaddingException e) {
			e.printStackTrace();
		} catch (InvalidKeyException e) {
			e.printStackTrace();
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		} catch (IllegalBlockSizeException e) {
			e.printStackTrace();
		} catch (BadPaddingException e) {
			e.printStackTrace();
		}
		return null;
	}

	public static String encrypt2Str(String content, String password) throws Exception {
		byte[] encryptResult = encrypt(content, password);
		return Base64.encode(encryptResult);
	}

	public static String decrypt2Str(String content, String password) throws Exception {

		byte[] decryptResult = decrypt(Base64.decode(content), password);
		return new String(decryptResult,"UTF-8");
	}

	public static void main(String[] args) throws Exception {
		String content = "t太阳est地";
		String password = "12345678";
		// 加密
		System.out.println("加密前：" + content);

		String tt4 = encrypt2Str(content, password);
		System.out.println(new String(tt4));

		// 解密
		String d = decrypt2Str(tt4, password);
		System.out.println("解密后：" + d);
		
//		加密前：t太阳est地
//		Bpf0jyJDj/pVHaRf66+OMA==
//		解密后：t太阳est地
	}
}