Hey there!
I pulled down the project to see why Carthage wasn't able to find a scheme target to build the framework with and it looks like the scheme isn't shared since it's under your username:
https://github.com/stephencelis/SQLiteCipher.swift/tree/master/SQLiteCipher.xcodeproj/xcuserdata/stephencelis.xcuserdatad/xcschemes
Would you be able to share the scheme you used so Carthage and find it?
Thanks!