APLIKASI INVERS MATRIKS DALAM PEMBENTUKAN PESAN RAHASIA

Abstract

One thing that can be improved its implementation in
Linear Algebra is Invers Matrix. Two Matrix is invers if two square
matrix have same order, matrix A and B that fulfill the characteristic
AB=BA=I, matrix B iscalled multiplication invers from matrix A and
it is notated with A-1, just the opposite, matrix A is called
multiplication invers from B that is notated with B-1. This research
purpose is to know employing invers matrix in making secret message
by using matrix adjoin to determine invers from a matrix and
employing softwareMicrosoft Visual Basic 6.0 in making message.
The steps of employing matrix invers in making secret message are:
(1) determining transformation matrix P,(2) secret message is notated
in matrix, (3) multiplying matrix P and Q with the result PQ, (4)
matrix is changed into text message with modulus operation (5) to
know sense of the message, the receiver multiplies P-1and matrix PQ
with the result the same initial code. When the initial code is same it
means that the sense of the message is known by the receiver. The
conclusion of the research are; (1) matrix invers by using matrix
adjoin is easier than using other method because mathematics
operation in involving simple operations, in despite of carefulness is
needed. (2) employing invers matrix in making secret message is more
efficient by using softwareMicrosoft Visual Basic 6.0.