com.lankr.tv_cloud.support.qcloud.image.PicProcessSign.java Source code

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Here is the source code for com.lankr.tv_cloud.support.qcloud.image.PicProcessSign.java

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package com.lankr.tv_cloud.support.qcloud.image;

import org.apache.commons.codec.binary.Base64;
import org.apache.commons.codec.digest.HmacUtils;

/**
 *
 * @author jusisli
 */
public class PicProcessSign {
    public static String sign(int appId, String secret_id, String secret_key, String bucket, long expired,
            String url) {
        //a=[appid]&b=[bucket]&k=[SecretID]&t=[currenTime]&e=[expiredTime]&l=[url link]
        if (empty(secret_id) || empty(secret_key)) {
            return null;
        }

        long now = System.currentTimeMillis() / 1000;
        String plain_text = String.format("a=%d&b=%s&k=%s&t=%d&e=%d&l=%s", appId, bucket, secret_id, now, expired,
                url);

        byte[] bin = HmacUtils.hmacSha1(secret_key, plain_text);

        byte[] all = new byte[bin.length + plain_text.getBytes().length];
        System.arraycopy(bin, 0, all, 0, bin.length);
        System.arraycopy(plain_text.getBytes(), 0, all, bin.length, plain_text.getBytes().length);

        all = Base64.encodeBase64(all);
        return new String(all);
    }

    public static boolean empty(String s) {
        return s == null || s.trim().equals("") || s.trim().equals("null");
    }

}