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Cryptology and Number Theory

  1. Oct 20, 2009 #1
    1. The problem statement, all variables and given/known data

    compute 59x +15 [tex]\equiv[/tex] 6 mod 811

    2. Relevant equations

    3. The attempt at a solution

    59x [tex]\equiv[/tex] -9 mod 811
    I really don't know hoow to do from here.
  2. jcsd
  3. Oct 20, 2009 #2


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    Homework Helper

    so i think 2 numbers a,b are equivalent in modular arthimetic, mod n, if

    a-b = m*n for some integer m

    in your case this translates to
    59x+9 = 811.m
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