Use the Gauss–Jordan elimination algorithm to show that the following system of equations has a unique solution for r = -1 but an infinite number of solutions for r = 2.

Leslie Ogu CSCI 4531 09/20/2016 - Chapter 21: Public-Key Encryption and Message Authentication Secure Hash Algorithm ● SHA was originally developed by NIST ● Published as FIPS 180 in 1993 ● Was revised in 1995 as SHA-1 ○ Produces 160-bit hash values ● NIST issued revised FIPS 180-2 in 2002 ○ Adds 3 additional versions of SHA ○ SHA-256,...