Amazon S3 Bucket Policy : Restrict Access to Specific Referer

s3-public-bucket-policy.json

{
  "Version":"2008-10-17",
  "Id":"http referer policy example",
  "Statement":[
    {
      "Sid":"Allow get requests referred by www.mysite.com and mysite.com",
      "Effect":"Allow",
      "Principal":"*",
      "Action":"s3:GetObject",
      "Resource":"arn:aws:s3:::YOUR_S3_BUCKET_NAME/*",
      "Condition":{
        "StringLike":{
          "aws:Referer":[
            " http://www.mysite.com/*",
            " http://mysite.com/*"
          ]
        }
      }
    }
  ]
}