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Old 2019-09-28, 22:37   #4
Batalov
 
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Mar 2008
Phi(3,3^1118781+1)/3

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Quote:
Originally Posted by baih View Post
...and
(c +1)/4 = 1 Mod (p-1)
This has no generality.
This means that q = 3 Mod (p-1). Which is a very poor choice of q tightly tied to p.
Even if you can solve it, it is of no practical interest. In ciphers, p and q will never be chosen like that.
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