AES 前后端加解密

1.引入crypto-js

	import AES from 'crypto-js';

2.前端加密函数（附加一个解密函数）

//十六位十六进制数作为密钥
const key = AES.enc.Utf8.parse('0123456789ASDFGH');
//十六位十六进制数作为密钥偏移量
const iv = AES.enc.Utf8.parse('ASDFGH0123456789'); 

export const encrypt = word => {
    const src = AES.enc.Utf8.parse(word);
    const encrypted = AES.AES.encrypt(
        src,
        key,
        {
            iv: iv,
            mode: AES.mode.CBC,
            padding: AES.pad.Pkcs7
        });
    return encrypted.ciphertext.toString().toUpperCase();
};

export const decrypt = word => {
    const encryptedHexStr = AES.enc.Hex.parse(word);
    const src = AES.enc.Base64.stringify(encryptedHexStr);
    const decrypt = AES.AES.decrypt(
        src,
        key,
        {
            iv: iv,
            mode: AES.mode.CBC,
            padding: AES.pad.Pkcs7
        });
    const decryptedStr = decrypt.toString(AES.enc.Utf8);
    return decryptedStr.toString();
};

3.后端解密函数（附加一个加密函数）

	import com.alibaba.fastjson.JSONObject;
	import javax.crypto.Cipher;
	import javax.crypto.spec.IvParameterSpec;
	import javax.crypto.spec.SecretKeySpec;
	import java.util.Objects;
	
	public class AESHelper {
		 // key：必须16个字符，且要和前端保持一致
	    private final static String KEY = "0123456789ASDFGH";
	    // 偏移量：必须16个字符，且要和前端保持一致
	    private final static String IV = "ASDFGH0123456789";
	
	    /**
	     * 加密返回的数据转换成 String 类型
	     * @param content 明文
	     */
	    public static String encrypt(String content) {
	        return parseByte2HexStr(Objects.requireNonNull(aesCbcEncrypt(content.getBytes(), KEY.getBytes(), IV.getBytes())));
	    }
	
	    /**
	     * 将解密返回的数据转换成 String 类型
	     * @param content Base64编码的密文
	     */
	    public static String decrypt(String content) {
	        return new String(Objects.requireNonNull(aesCbcDecrypt(parseHexStr2Byte(content), KEY.getBytes(), IV.getBytes())));
	    }
	
	    private static byte[] aesCbcEncrypt(byte[] content, byte[] keyBytes, byte[] iv) {
	        try {
	            SecretKeySpec key = new SecretKeySpec(keyBytes, "AES");
	            //设置模式，编码，后端为PKCS5Padding，对应前端是Pkcs7
	            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
	            cipher.init(Cipher.ENCRYPT_MODE, key, new IvParameterSpec(iv));
	            return cipher.doFinal(content);
	        } catch (Exception e) {
	            System.out.println("exception:" + e.toString());
	        }
	        return null;
	    }
	
	    private static byte[] aesCbcDecrypt(byte[] content, byte[] keyBytes, byte[] iv) {
	        try {
	            SecretKeySpec key = new SecretKeySpec(keyBytes, "AES");
	            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
	            cipher.init(Cipher.DECRYPT_MODE, key, new IvParameterSpec(iv));
	            return cipher.doFinal(content);
	        } catch (Exception e) {
	            System.out.println("exception:" + e.toString());
	        }
	        return null;
	    }
	
	    /**
	     * 将byte数组转换成16进制String
	     */
	    public static String parseByte2HexStr(byte[] buf) {
	        StringBuilder sb = new StringBuilder();
	        for (byte b : buf) {
	            String hex = Integer.toHexString(b & 0xFF);
	            if (hex.length() == 1) {
	                hex = '0' + hex;
	            }
	            sb.append(hex.toUpperCase());
	        }
	        return sb.toString();
	    }
	
	    /**
	     * 将16进制String转换为byte数组
	     */
	    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;
	    }
	}

最后

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