While load testing the login module in jmeter, using X-Amz-Target AWSCognitoIdentityProviderService.RespondToAuthChallenge, how is the value for PASSWORD_CLAIM_SIGNATURE parameter assigned in the script.

  • What is the algorithm for generating that?
  • How to use amplify-js library for generating the value for PASSWORD_CLAIM_SIGNATURE in jmeter?

1 Answer 1


The recommended scripting option for JMeter is Groovy language therefore I would rather recommend using AWS SDK for Java from the JSR223 Test Elements rather than trying to use amplify-js (whatever it is)

You can check aws-cognito-java-desktop-app for example code.

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