Problem description
The signature does not match.
Causes
You initiated a signed request that includes IP address access information, but the signature does not match the signature calculated by OSS.
Examples
The IP addresses that are allowed to access OSS resources are specified when the signature is generated. You initiated a request to access the signed URL, but your IP address is not in the whitelist.
An error occurs during signature calculation. As a result, the signature in the request does not match the signature that is calculated by OSS.
Solutions
Make sure that the signed URL is accessed from the specified range of IP addresses.
Make sure that the parameters specified when the signature is generated are valid.
Use Alibaba Cloud SDKs to initiate requests. Alibaba Cloud SDKs automatically generate signatures for the requests without the need to manually calculate a signature. For more information, see Overview.