Authorization mechanism not supported - "Please use AWS4-HMAC-SHA256"

Hi there,

I’ve gotten to the step where I enter the Bucket name, path (blank), AWS access key ID, and AWS secret key into the dialog box on the google sheet. However, when I click save, the page hangs with the button showing “Saving”, and nothing occurs.

In the Chrome developer tools, I see the following error logged:

665147591-mae_html_user_bin_i18n_mae_html_user.js:42 

Uncaught Error: AWS Error - InvalidRequest: The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256.
 at S3Request:184 (S3:4) 38692e5d-4673-4c76-8733-0d4f8f1a0aa0
 at S3:146 (S3:4) a1279393-c26a-481c-9557-516ab8f2ac22
 at publish (Code:71) (Publish sheet to S3:20) 744867ab-df1e-44d5-aa49-4744c8b83522
 at updateConfig (Code:100) (Publish sheet to S3:20) 744867ab-df1e-44d5-aa49-4744c8b83522

I think I’ve followed your instructions correctly and set up everything I need to on the S3 side. Any idea on how to get around this error?

Thanks! Jeffrey

[gloomylumi]

I ended up having to scrap the S3 binding originally used with this add-on. I was adapting the add-on for use Google Forms, rather than Sheets anyway. I used this repo instead and replaced the code under the ‘upload to s3’ comment on line 63 with a call to wrapper function that looked like this:

function s3PutObject(objectName, object) {
  const props = PropertiesService.getDocumentProperties().getProperties()

  const contentBlob = Utilities.newBlob(JSON.stringify(object), "application/json")
  contentBlob.setName(objectName)
  
  const service = 's3'
  const region = 'us-east-2'
  const action = 'PutObject'
  const params = {}
  const method = 'PUT'
  const payload = contentBlob.getDataAsString()
  const headers = {}
  const uri = '/' + objectName
  const options = {
    Bucket: props.bucketName
  }

  AWS.init(props.awsAccessKeyId, props.awsSecretKey)
  const response = AWS.request(service, region, action, params, method, payload, headers, uri, options)
  return response
}

In the context of this repo, the function call would look like:

s3PutObject([props.path, sheet.getId()].join('/'), cells)

Hope this helps someone else!

[TranBaVinhSon]

@Tetsunori-Mitarai I tried both your lib and patch-1 but still got same error:

AWS Error - InvalidRequest: The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256.