Update for 02-11-21 17:15

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Tyler Perkins 2021-11-02 17:15:01 -04:00
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= Congrucences =
A Congruence
{{{
ax = 1 (mod m)
}}}
has a solution x, if and only if a and m are [[relative_prime]]s. The solution
in the range of 1 to m-1 is denoted a^-1 or a^-1 (mod m), called the
multiplicative inverse of a modulo m.

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= Greatest Common Denominator =
A greatest common denominator or GCD is the largest number that two numbers can
both divide into

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=== Number Theory === === Number Theory ===
* [[prime]] * [[prime]]
* [[relative_prime]]
*

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= Relative Prime =
Two numbers are Relative Primes if they have not common prime factors.
Equivalently, a and b are relatively prime if their [[gcd]] is 1.:w

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* [[substitution|Substitution]] * [[substitution|Substitution]]
=== Math for Crypto ===
* [[../math/congruences]]
== Reconnaissance == == Reconnaissance ==
* [[nmap|nmap]] - port scanner * [[nmap|nmap]] - port scanner