java - Generate Azure SAS Token on Android -

trying generate azure sas token in order able use service bus rest api.

found link:

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

how achieve same on android?

my current attempt looks 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 rest api of service bus using postman following :

401 40103: invalid authorization token signature time 261 ms

---

update: found link

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

under section 6 code android

i have no android environment test, have similar scenario in java environment, works fine, following code:

private static string generatesastoken(string uri, string keyname, string key){         string ret = "";         // long tokenexpirationtime = (system.currenttimemillis() / 1000) + (10 * 365 * 24 * 60 * 60);          date = 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 use composite signing key create oauth_signature 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 2 places, 1) tokenexpirationtime 2) urlencoder.encode string stringtosign, please try suggestion, hope give tips.