AWS Transfer Family now provides you with the option to import and use a trading partner’s public, self-signed TLS certificate for sending Applicability Statement 2 (AS2) messages to their server over HTTPS. Additionally, you can now choose to encrypt messages sent to your partner’s server using the 3DES cipher. By default, AS2 connectors will encrypt messages with the AES128 cipher unless you select 3DES for purposes of backwards compatibility with your partner’s existing AS2 implementation. These capabilities add to AWS Transfer Family’s existing list of AS2 interoperability features and enable you to reliably connect with trading partners that require these specific security configurations.
Source:: Amazon AWS