You initiated a request carrying the signature information in the Authorization header, but after splitting the Signature info by equal signs (=), the resulting array does not have a length of 2, the first element is not Signature, or the second element is empty.

PUT /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/cn-beijing/tos/request,SignedHeaders=host;x-tos-content-sha256;x-tos-date,Signature=d40b6642843=67096f25d​

The Signature info in the signature above is Signature=d40b6642843=67096f25d, which splits into an array of length 3 using equal signs (=).

Solution

Calculate the signature correctly. For detailed steps, see Signature Mechanism.

Last updated: 2025.10.11 17:59:36

Public security network record in Beijing: No. 11010802032137