You sent a request carrying signature information in the Authorization header, URL parameter X-Tos-Signature, or form element x-tos-signature, but the Signature information could not be decoded as hexadecimal.

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/cn-beijing/tos/request,SignedHeaders=host;x-tos-content-sha256;x-tos-date,Signature=%2A%2B%2C​

The Signature information in the above signature is Signature=%2A%2B%2C, where %2A%2B%2C cannot be decoded as hexadecimal.

Solution

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

Last updated: 2025.10.11 17:59:34

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