Boto3 is the Amazon Web Services (AWS) Software Development Kit (SDK) for Python, which allows developers to write software that makes use of AWS services like S3, EC2, and DynamoDB. It provides an easy-to-use, object-oriented API as well as low-level access to AWS services.
When using Boto3, you might encounter the SignatureDoesNotMatch error. This error typically manifests when you attempt to make a request to an AWS service, and the response indicates that the signature you provided does not match what AWS expects.
SignatureDoesNotMatch error message.The SignatureDoesNotMatch error occurs when the request signature calculated by your client does not match the signature calculated by AWS. This discrepancy can arise due to several reasons, including incorrect AWS credentials, incorrect request parameters, or improper request signing.
AWS uses Signature Version 4 to authenticate requests. This involves creating a string to sign using your AWS Secret Access Key and other request details. If any part of this process is incorrect, AWS will not be able to verify the signature, resulting in the error.
To resolve this issue, follow these steps:
~/.aws/credentials file or use environment variables.By following the steps outlined above, you should be able to resolve the SignatureDoesNotMatch error in Boto3. Always ensure that your AWS credentials are correct and that your requests are properly signed. For further assistance, refer to the Boto3 Documentation or the AWS Support page.
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