如何为私有s3存储桶中的对象提供长期读访问权限

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "AllowReadAccess",
      "Effect": "Allow",
      "Action": [
        "s3:GetObject"
      ],
      "Resource": [
        "arn:aws:s3:::your-bucket-name/*"
      ]
    }
  ]
}

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "AllowRoleAccess",
      "Effect": "Allow",
      "Principal": {
        "AWS": "arn:aws:iam::your-account-id:role/your-role-name"
      },
      "Action": [
        "s3:GetObject"
      ],
      "Resource": [
        "arn:aws:s3:::your-bucket-name/*"
      ]
    }
  ]
}