FFS, cryptography is not the problem. How many times will we have to shut down that particular stupidity? Asymmetric cryptography is a corner stone of basically all online secure communications, and has been since before Google and apple were even founded as companies! (First invented in 1970)
When did Https ever hurt you? That's built on asymmetric cryptography. Wherever you see the word "secure" it's basically shorthand for asymmetric cryptography.
Https
Ssh
Sftp
E2ee
It's asymmetric cryptography all the way.