2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/142085We show that a number of cryptographic protocols using non-commutative semigroups including the Cha-Ko-Lee-Han-Cheon braid group public-key cryptosystem and related public-key cryptosystems such as the Shpilrain-Ushakov public-key cryptosystems are based on the MSCSP.Cryptography and Securitytext