0002-00000062

Problem description

The signature format is invalid.

Cause

The signature included in the request header is in an invalid format.

Example Problem

You initiated a request that contains a signature in the header. However, the value of the Authorization field is in an invalid format. For example, the Authorization field is missing the colon (:) that separates the AccessKey ID and the signature.

GET /test.txt HTTP/1.0
Date: Tue, 20 Dec 2022 08:48:18 GMT
Host: oss-example.oss-cn-hangzhou.aliyuncs.com
Authorization: OSS qn6q**************:77Dv****************

Solution

Calculate the value of the Authorization field as follows:

Authorization = "OSS " + AccessKeyId + ":" + Signature
Signature = base64(hmac-sha1(AccessKeySecret,
            VERB + "\n"
            + Content-MD5 + "\n" 
            + Content-Type + "\n" 
            + Date + "\n" 
            + CanonicalizedOSSHeaders
            + CanonicalizedResource))

For more information about how to calculate the value of the Authorization field, see Include signatures in the Authorization header.