My Math Forum Cryptography/Matrices

 September 21st, 2018, 03:26 AM #1 Newbie   Joined: Sep 2018 From: USA Posts: 3 Thanks: 0 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!

 Thread Tools Display Modes Linear Mode

 Similar Threads Thread Thread Starter Forum Replies Last Post frankmuller1245 Applied Math 0 September 21st, 2018 03:25 AM spo0ofer Calculus 2 April 29th, 2016 12:08 PM Vi Sky Math 0 June 10th, 2014 04:05 AM Bogauss Number Theory 7 February 16th, 2012 02:26 PM prodo Computer Science 11 January 13th, 2008 01:40 AM

 Contact - Home - Forums - Cryptocurrency Forum - Top