My Math Forum  

Go Back   My Math Forum > Math Forums > Academic Guidance

Academic Guidance Academic Guidance - Academic guidance for those pursuing a college degree... what college? Grad school? PhD help?

LinkBack Thread Tools Display Modes
September 21st, 2018, 04:26 AM   #1
Joined: Sep 2018
From: USA

Posts: 3
Thanks: 0

Cool Cryptography/Matrices

Hello, there was a matrix problem I was unable to work out completely:

'Your task is to crack the following code and find the encrypted word.

To make your task easier, the following information about the encoding matrix is given:

Position 1,1 in the encoding matrix is an even number
- The decoding matrix only contains integers
- Position 1,1 in the encoding matrix is the negative of the number in position - 1,1 in the decoding matrix
- Modulo arithmetic hasn't been used

My coded message is:

91, -38, 137, -59, 145, -59

How would I go about solving it; I know that E^-1 x EA will decipher the message. But would I place it in a 2x2 or a 3x3 matrix? How would I work out the encoding matrix? Thank you in advance!
frankmuller1245 is offline  

  My Math Forum > Math Forums > Academic Guidance

cryptography or matrices, matrix, multiplication

Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Cryptography frankmuller1245 Applied Math 0 September 21st, 2018 04:25 AM
Cryptography- some easy exe. spo0ofer Calculus 2 April 29th, 2016 01:08 PM
who can help me in RSA Cryptography??? Vi Sky Math 0 June 10th, 2014 05:05 AM
About cryptography Bogauss Number Theory 7 February 16th, 2012 03:26 PM
cryptography prodo Computer Science 11 January 13th, 2008 02:40 AM

Copyright © 2019 My Math Forum. All rights reserved.