com.baidu.haotianjing.core.auth.MD5SignerImpl Maven / Gradle / Ivy

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Haotianjing SaaS SDK for Java

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package com.baidu.haotianjing.core.auth;

import org.apache.commons.codec.digest.DigestUtils;

import java.util.Arrays;
import java.util.Map;

import static com.baidu.haotianjing.core.constants.RiskCoreConstants.ACCOUNTID;
import static com.baidu.haotianjing.core.constants.RiskCoreConstants.APPKEY;
import static com.baidu.haotianjing.core.constants.RiskCoreConstants.MODE;
/**
 * 签名生成器 - MD5算法
 */
public class MD5SignerImpl implements Signer {

    public static final MD5SignerImpl INSTANCE = new MD5SignerImpl();

    private MD5SignerImpl() {
    }

    @Override
    public String sign(Credentials credentials, String mode, Map params) {
        String accountId = credentials.getAccountId();
        String appkey = credentials.getAppkey();
        String seckey = credentials.getSeckey();
        // 1. 参数升序排序
        String[] keys = params.keySet().toArray(new String[0]);
        Arrays.sort(keys);
        // 2. 拼接参数名和参数值
        StringBuilder sb = new StringBuilder();
        sb.append(ACCOUNTID).append(accountId);
        sb.append(APPKEY).append(appkey);
        sb.append(MODE).append(mode);
        for (String key : keys) {
            Object val = params.get(key);
            if (null == val) {
                continue;
            }
            sb.append(key).append(val);
        }
        // 3. 带上seckey
        sb.append(seckey);
        return DigestUtils.md5Hex(sb.toString());
    }
}