Question

我按照此问题的说明https://github.com/aws/aws-sdk-go/issues/467清楚地记录了如何为PUT请求创建预先签名的网址。目标是预设网址，这样我就可以直接从浏览器上传图像

密钥和密钥当然是我当前的凭据，可以通过SDK直接使用PutObject请求

creds := credentials.NewStaticCredentials("key", "secret", "")

cfg := aws.NewConfig().WithRegion("us-west-2").WithCredentials(creds)
srv := s3.New(session.New(), cfg)

params := &s3.PutObjectInput{
    Bucket: aws.String("my-bucket"),
    Key:    aws.String("/local/test/filename"), 
}
req, _ := srv.PutObjectRequest(params)
url, err := req.Presign(15 * time.Hour)
if err != nil {
    fmt.Println("error signing request", err)
}

fmt.Println("URL", url)

```

然后，我接受该URL并发出curl请求。我收到了这个回复

<?xml version="1.0" encoding="UTF-8"?>
<Error>
    <Code>SignatureDoesNotMatch</Code>
    <Message>The request signature we calculated does not match the signature you provided. Check your key and signing method.</Message>
    <AWSAccessKeyId>redacted</AWSAccessKeyId>
    <StringToSign>redacted</StringToSign>
    <SignatureProvided>redacted</SignatureProvided>
    <StringToSignBytes>redacted</StringToSignBytes>
    <CanonicalRequest>PUT
/local/test/filename
X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=redacted%2Fus-west-2%2Fs3%2F%20aws4_request&amp;X-Amz-Date=20161129T012909Z&amp;X-Amz-Expires=54000&amp;X-Amz-SignedHeaders=host
host:redacted.s3-us-west-2.amazonaws.com

host
UNSIGNED-PAYLOAD</CanonicalRequest>
    <CanonicalRequestBytes>redacted</CanonicalRequestBytes>
    <RequestId>redacted</RequestId>
    <HostId>redacted</HostId>
</Error>

为什么预先签名的URL为我提供了一个据称不匹配的签名？同样，这些相同的凭证当前正在我的服务器上直接使用PutObject命令

Answer 1

我的Bucket策略配置不正确。我不得不用IAM政策交叉引用我的密钥/秘密，并确保它们列在政策的“委托人”部分

https://aws.amazon.com/blogs/security/iam-policies-and-bucket-policies-and-acls-oh-my-controlling-access-to-s3-resources/

通过aws-sdk-go签名URL时，签名不匹配403错误

1 个答案: