--- currentMenu: amazon-s3 --- # AmazonS3 & AclAwareAmazonS3 **Warning: This adapter has been deprecated since v0.4.0 and will be removed in v1.0.0. You should rather use the AwsS3 adapter.** When using the legacy Amazon S3 adapters (aws-sdk-php < 2), you will need to specify a CA certificate to be able to talk to Amazon servers in https. You can use the one which is shipped with the SDK by defining before creating the ``\AmazonS3`` object: ```php define("AWS_CERTIFICATE_AUTHORITY", true); ``` Specifying a custom CA certificate is not required when using the `Gaufrette\Adapter\AmazonS3` adapter because it uses the newest version of the AWS SDK for PHP.