Direct API Invalid Signature String to sign - 'timestamp=1541651684'."

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Ce Zhang

• November 08, 2018 06:25

I'm using React Native to directly call the API for uploading images using SINGED model.

If I remove all the options, e.g. folder, public_id... in the string in order to generate authentication signature, that works perfectly well. 

BUT WHEN I ADD even one parameter into the string, is returns the Invalid Signature error.

Here is my code:

let timestamp = await (Date.now() / 1000 | 0).toString();

let api_key='XXXXXXXX';

let api_secret='XXXXXXX';

let cloud='XXXXXX';

let hash_string= 'folder=aabbcc&timestamp=' + timestamp + api_secret;

let signature=CryptoJS.SHA1(hash_string).toString();

let upload_url='https://api.cloudinary.com/v1_1/' + cloud + '/image/upload';

 

let xhr=newXMLHttpRequest();

  xhr.open('POST', upload_url);

  xhr.onload=async () => {

    vari mageURL=JSON.parse(xhr._response).secure_url;

  resolve(imageURL);

  };

let formdata=newFormData();

formdata.append('file', {uri:uri, type:'image/jpg', name:'aaa.jpg'});

 

formdata.append('timestamp', timestamp);

formdata.append('api_key', api_key);

formdata.append('signature', signature);

 

xhr.send(formdata);

 

1

• 

  Yakir Perlin

  • November 08, 2018 08:42

  Hi,

  In this example you sign this string: " 'folder=aabbcc&timestamp=' + timestamp + api_secret", but you did not used the "folder" parameter in you upload call:

  formdata.append('file', {uri:uri, type:'image/jpg', name:'aaa.jpg'});

  You used only the "file" parameter and not the also "folder". This is why you received this message: "String to sign - 'timestamp=1541651684' because we expected to sign only the timestamp.

  Hope this helps, could you please try again and let me know if it works for you?

  Best,

  Yakir

   

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• 

  Ce Zhang

  • November 08, 2018 09:03

  Hi Yakir,

  I add a standalone 

  formdata.append('folder', 'aabbcc');

   

  It worked! 

   

  Thanks you so much for your help!

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• 

  Yakir Perlin

  • November 08, 2018 11:05

  Great! 

  Glad I could help.

  Best,

  Yakir

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