Enable a user to access to a single S3 bucket

#s3

#aws

#iam

#amazon

#bucket

#user

You need to access in your AWS console and activate IAM access control.

Create a new bucket in S3
Create a new group in IAM

Create a new policy in the IAM group and add:

{
  "Statement": [
    {
      "Effect": "Allow",
      "Action": "s3:*",
      "Resource": [
        "arn:aws:s3:::test-bucket-mavimo",
        "arn:aws:s3:::test-bucket-mavimo/*"
      ]
    },
    {
      "Effect": "Allow",
      "Action": "s3:ListAllMyBuckets",
      "Resource": "arn:aws:s3:::*"
    }
  ]
}

and change the bucket name (from test-bucket-name to your real bucket name).

Create a new user in IAM
Add the user in the group created before

Now you can use your user credential to access and write/read in our bucket. User can list all bucket but can't access to data avialable inside the not authorized bucket. This is a know problem but there are not workaround.