You sent a request carrying signature information in the Authorization header, URL parameter X-Tos-Credential, or form element x-tos-credential, but the Region in the signature Credential information is empty.

GET /objectName HTTP/1.1​
Host: <Bucket name>.<TOS endpoint>​
Date: GMT Date​
x-tos-content-sha256: abc***​
x-tos-date: 2022***​
Authorization: TOS4-HMAC-SHA256 Credential=testAK/20220322//tos/request,SignedHeaders=host;x-tos-content-sha256;x-tos-date,Signature=d40b66cf0054d1642843670d10fa095e1609c7896f25df217770b0abe717693b​

The Credential information in the signature above is Credential=testAK/20220322//tos/request, which lacks Region information.

Solution

Calculate the signature using the correct method. For detailed operations, refer to Signature Mechanism.

Last updated: 2025.10.11 17:59:34

Public security network record in Beijing: No. 11010802032137