Eldos has released a preview version of SecureBlackBox for Delphi XE5 Firemonkey on Android and IOS. SecureBlackBox is a component suite that has a lot of components that implement secure protocols like SSL, SSH, SFTP, HTTPS, secure ZIP files, and more. It is a commercial package and has many different configurations and price points. For a single app developer it didn’t seem too pricy for the amount of functionality that you get but I wish the pricing was simpler. If you just need HTTPS (SSL) you may be better off with OpenSSL but for things like SFTP and SSH SecureBlackBox may be the way to go. It even has WebDAV and PDF signing components which I haven’t seen by anyone else for Android and IOS with Firemonkey yet.
Check out the forum post about the mobile prerelease. Download the prerelease directly from Eldos.