在Android上生成Azure SAS令牌 [英] Generate Azure SAS Token on Android

问题描述

试图生成Azure SAS令牌以便能够使用Service Bus REST API。

找到此链接：

http ：//blog.simontimms.com/2015/01/30/sending-message-to-azure-service-bus-using-rest/

如何在Android上实现同样的功能？

我的当前尝试如下所示：

  private String generateSasToken（String uri，String keyName，String key）{
 String ret =; 
 
 long tokenExpirationTime =（System.currentTimeMillis（）/ 1000）+（10 * 365 * 24 * 60 * 60）; 
 
尝试{
 String stringToSign = new URL（uri）.toString（）+\\\
+ tokenExpirationTime; 
 SecretKey secretKey = null; 
 
 byte [] keyBytes = key.getBytes（UTF-8）; 
 
 Mac mac = Mac.getInstance（HMACSHA256）; 
 
 secretKey = new SecretKeySpec（keyBytes，mac.getAlgorithm（））; 
 
 mac.init（secretKey）; 
 
 String signature = Base64.encodeToString（mac.doFinal（stringToSign.getBytes（UTF-8）），Base64.DEFAULT）; 
 ret = String.format（SharedAccessSignature sr =％s& sig =％s& se =％s& skn =％s，
 URLEncoder.encode（uri），
 URLEncoder。编码（签名），
 String.valueOf（tokenExpirationTime），
 keyName）; 
} catch（MalformedURLException e）{
 e.printStackTrace（）; 
} catch（NoSuchAlgorithmException e）{
 e.printStackTrace（）; 
} catch（InvalidKeyException e）{
 e.printStackTrace（）; 
} catch（UnsupportedEncodingException e）{
 e.printStackTrace（）; 
} 
 
 return ret; 
} 
  

使用Postman调用服务总线的Rest API后，我得到以下内容： / b>

<401> 40103：授权令牌签名无效
时间261 ms

---

更新：找到此链接

https://azure.microsoft.com/en-us/documentation/articles/notification-hubs -android-get-started /

在第6节中，android的代码

解决方案

我没有Android环境来测试，我只在java环境中有类似的场景，它工作正常，以下是我的代码：

  private static String generateSasToken（String uri，String keyName，String key）{
 String ret =; 
 
 // long tokenExpirationTime =（System.currentTimeMillis（）/ 1000）+（10 * 365 * 24 * 60 * 60）; 
 
现在的日期= new Date（）; 
日期previousDate = new Date（1970）; 
 long tokenExpirationTime =（（now.getTime（） -  previousDate.getTime（））/ 1000）+3600; 
 
 try {
 String stringToSign = URLEncoder.encode（new URL（uri）.toString（），java.nio.charset.StandardCharsets.UTF_8.toString（））+\\\
 + tokenExpirationTime; 
 
 System.out.println（stringToSign）; 
 SecretKey secretKey = null; 
 
 byte [] keyBytes = key.getBytes（UTF-8）; 
 
 Mac mac = Mac.getInstance（HMACSHA256）; 
 
 secretKey = new SecretKeySpec（keyBytes，mac.getAlgorithm（））; 
 
 mac.init（secretKey）; 
 
 byte [] digest = mac.doFinal（stringToSign.getBytes（））; 
 //然后使用复合签名密钥从签名基本字符串
创建一个oauth_signature String signature = Base64.encodeBase64String（digest）; 
 System.out.println（URLEncoder.encode（signature，java.nio.charset.StandardCharsets.UTF_8.toString（）））; 
 // String signature = Base64.encodeBase64String（mac.doFinal（stringToSign.getBytes（UTF-8）））; 
 ret = String.format（SharedAccessSignature sr =％s& sig =％s& se =％s& skn =％s，
 URLEncoder.encode（uri，java.nio.charset.StandardCharsets .UTF_8.toString（）），
 URLEncoder.encode（signature，java.nio.charset.StandardCharsets.UTF_8.toString（）），
 String.valueOf（tokenExpirationTime），
 keyName） ; 
} catch（MalformedURLException e）{
 e.printStackTrace（）; 
} catch（NoSuchAlgorithmException e）{
 e.printStackTrace（）; 
} catch（InvalidKeyException e）{
 e.printStackTrace（）; 
} catch（UnsupportedEncodingException e）{
 e.printStackTrace（）; 
} 
 
 return ret; 
} 
  

我改变了两个地方，1）tokenExpirationTime 2）URLEncoder.encode字符串stringTosign，请试试我的建议，希望这可以给你一些提示。

Trying to generate Azure SAS token in order to be able to use Service Bus REST Api.

Found this link:

http://blog.simontimms.com/2015/01/30/sending-message-to-azure-service-bus-using-rest/

How to achieve the same on Android?

My Current attempt looks like this:

private String generateSasToken(String uri, String keyName, String key){
    String ret = "";

    long tokenExpirationTime = (System.currentTimeMillis() / 1000) + (10 * 365 * 24 * 60 * 60);

    try {
        String stringToSign = new URL(uri).toString() + "\n" + tokenExpirationTime;
        SecretKey secretKey = null;

        byte[] keyBytes = key.getBytes("UTF-8");

        Mac mac = Mac.getInstance("HMACSHA256");

        secretKey = new SecretKeySpec(keyBytes, mac.getAlgorithm());

        mac.init(secretKey);

        String signature = Base64.encodeToString(mac.doFinal(stringToSign.getBytes("UTF-8")), Base64.DEFAULT);
        ret = String.format("SharedAccessSignature sr=%s&sig=%s&se=%s&skn=%s",
                URLEncoder.encode(uri),
                URLEncoder.encode(signature),
                String.valueOf(tokenExpirationTime),
                keyName);
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (InvalidKeyException e) {
        e.printStackTrace();
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }

    return ret;
}

After calling the Rest API of service bus using Postman i get the following :

401 40103: Invalid authorization token signature Time 261 ms

---

Update: Found this link

https://azure.microsoft.com/en-us/documentation/articles/notification-hubs-android-get-started/

Under section 6 the code for android

解决方案

I have no Android environment to test, I have a similar scenario in only java environment, it works fine, the following is my code:

private static String generateSasToken(String uri, String keyName, String key){
        String ret = "";

       // long tokenExpirationTime = (System.currentTimeMillis() / 1000) + (10 * 365 * 24 * 60 * 60);

        Date now = new Date();
        Date previousDate=new Date(1970);
        long tokenExpirationTime = ((now.getTime() - previousDate.getTime()) / 1000 )+3600;

        try {
            String stringToSign = URLEncoder.encode(new URL(uri).toString(),java.nio.charset.StandardCharsets.UTF_8.toString()) + "\n" + tokenExpirationTime;

            System.out.println(stringToSign);
            SecretKey secretKey = null;

            byte[] keyBytes = key.getBytes("UTF-8");

            Mac mac = Mac.getInstance("HMACSHA256");

            secretKey = new SecretKeySpec(keyBytes, mac.getAlgorithm());

            mac.init(secretKey);

            byte[] digest = mac.doFinal(stringToSign.getBytes());
            //We then use the composite signing key to create an oauth_signature from the signature base string
            String signature = Base64.encodeBase64String(digest);
            System.out.println( URLEncoder.encode(signature, java.nio.charset.StandardCharsets.UTF_8.toString()));
           // String signature = Base64.encodeBase64String(mac.doFinal(stringToSign.getBytes("UTF-8")));
            ret = String.format("SharedAccessSignature sr=%s&sig=%s&se=%s&skn=%s",
                    URLEncoder.encode(uri, java.nio.charset.StandardCharsets.UTF_8.toString()),
                    URLEncoder.encode(signature, java.nio.charset.StandardCharsets.UTF_8.toString()),
                    String.valueOf(tokenExpirationTime),
                    keyName);
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }

        return ret;
    }

I have changed two places, 1) the tokenExpirationTime 2) URLEncoder.encode the String stringTosign, please try with my suggestion, hope this could give you some tips.

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