This repo provides some starter code for working with libgcrypt.

Demo:

$ ./keygen rsapk.sp 
RSA key generation can take a few minutes. Your computer 
needs to gather random entropy. Please wait... 

RSA key generation complete! Please enter a password to lock 
your key pair. This password must be committed to memory. 

Keypair Password: 

$ ./main rsapk.sp 
Keypair Password: 
Original:
 48656C6C6F20776F726C642E
Decrypted:
 48656C6C6F20776F726C642E
Messages match.
-> Hello world.