cryptosystem

or cryp·to sys·tem

[ krip-toh-sys-tuh m ]
/ ˈkrɪp toʊˌsys təm /

noun

a system for encoding and decoding secret messages.

Origin of cryptosystem

First recorded in 1965–70; crypto- + system
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019