Map authInfo = JSON.parseObject(decryptAES(unBase64("cookie value"), getKey("AES key")));

// 默认AES key: "vFrItmxI9ct8JbAg"
// 配置于config.lua -> cookie_aes_key

// 依赖方法

import com.alibaba.fastjson.JSON;
import com.google.common.base.Charsets;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import java.security.Key;

public StringBuilder padding(String s, char letter, int repeats) {
    StringBuilder sb = new StringBuilder(s);
    while (repeats-- > 0) {
        sb.append(letter);
    }
    return sb;
}

public String padding(String s) {
    return padding(s, '=', s.length() % 4).toString();
}

public byte[] unBase64(String value) {
    return org.apache.commons.codec.binary.Base64.decodeBase64(padding(value));
}

public String string(byte[] bytes) {
    return new String(bytes, Charsets.UTF_8);
}

public String decryptAES(byte[] value, Key key) {
    try {
        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
        cipher.init(Cipher.DECRYPT_MODE, key);
        byte[] decrypted = cipher.doFinal(value);
        return string(decrypted);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

public byte[] bytes(String str) {
    return str == null ? null : str.getBytes(Charsets.UTF_8);
}

public Key keyFromString(String keyString) {
    return new SecretKeySpec(bytes(keyString), "AES");
}

public Key getKey(String key) {
    if (key.length() >= 16) {
        return keyFromString(key.substring(0, 16));
    }
    StringBuilder sb = new StringBuilder(key);
    while (sb.length() < 16) {
        sb.append(key);
    }
    return keyFromString(sb.toString().substring(0, 16));
}