iOS SSH client planning

We currently use NMSSH for the iOS client: http://cocoadocs.org/docsets/NMSSH/2.2.7/

There are some issues with this implementation:

• The last release was in July 2018
• Newer signature algorithms are not supported

Other options

• SwiftSH
  • Written by the main author of NMSSH
  • Last commit was in August 2019
  • Doesn't support SCP or SFTP
  • No documentation
• SwiftNIO SSH
  • Is more like libssh2 than openssh
  • Cannot use openssh keys
• Shout
  • Does not officially support iOS, but there are hacks to get it to work