Do you know the Yorubas devised “Paroko” (secret-splitting crypto scheme)

The Yorubas devised an elaborate secret-splitting crypto scheme called “Paroko,” in which neither the courier nor the eavesdroppers can decode and reconstruct the secret, but the recipient.

Today, secret-splitting or secret-sharing is a well-known encryption scheme in cryptography.

I’m not saying cryptography came from the Yorubas, nor I’m I saying cryptography even came from Africa. I am saying, however, that if the modern Yorubas have studied and built on the knowledge of their antecedents, they too could have contributed significantly to the development of modern cryptography as others around the world.