CODEWITHSUNDEEP
restamazon-web-servicesapiamazon-s3
InvalidSyntax
InvalidSyntax

Reputation: 9495

Example Amazon S3 Get Bucket Request using Access Key and Secret

I am struggling to understand the documentation on how to make a request to Amazon S3 API's to retrieve a list of Objects.

The documentation doesn't show how to Authorise the request using just the access key and secret. Can someone post an example? preferably something I can use in Postman to test with.

Upvotes: 1

Views: 6788

Answers (2)

dk-na
dk-na

Reputation: 141

AWS supports two signature versions: Signature Version 4 and Signature Version 2. You should use Signature Version 4. All AWS services support Signature Version 4, except Amazon SimpleDB which requires Signature Version 2. All AWS regions support Signature Version 4.

Here is a great article by ŁUKASZ ADAMCZAK explaining how to generate and sign the S3 request using openssl and curl:

Amazon S3 REST API with curl

Upvotes: 1

Cheruvian
Cheruvian

Reputation: 5867

The real challenge will be to do the sigv4 signing. I truly urge you to use one of the established SDKs (what language are you using??). If not wrap a call to the AWS CLI.

If you really want to implement it yourself the I urge you to open source your efforts so others can benefit.

I would start by setting up the bucket with no auth (so anyone can read from it) and determine how to make a request to S3 first. You can see some raw HTTP Request examples here: https://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectGET.html#RESTObjectGET-responses-examples

Then you'll be on to the fun part, sigv4 signing the request. This is a well documented process but still a good amount of effort. https://docs.aws.amazon.com/general/latest/gr/signature-version-4.html

Upvotes: 0

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