CuaimaCrypt is a cypher designed by Julian Bolivar-Galeno in 2007, with improvements suggested by Jonathan Pastran during the development period.

CuaimaCrypt originally had two versions, CuaimaCrypt Stream Codec (CuaimaCrypt-SC) which was designed for hardware implementation, making encoding data streams in real time; and CuaimaCrypt Block Codec (CuaimaCrypt-BC) which was designed for software implementation because it uses the capacity of PCs to process data blocks efficiently.

Currently the most distributed and used is the CuaimaCrypt-BC and I will focus this article on it.