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Pigpen Cipher

Simple Substitution Cipher

Polyalphabetic Ciphers

Playfair Cipher

Vigenère Cipher

Vigenère Cipher Tabula Recta

Transposition Ciphers

Rail Fence Cipher

Route Cipher

Scytale Cipher

Hash Functions

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Avalanche Effect Experiment

Random Numbers

Linear Congruential Generators (Recipes)

Linear Congruential Generator (Custom)

Linear Feedback Shift Register (LFSR)

Middle Square Method

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Homophonic Cipher

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Culper Codebook

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Modulo N Congruences Calculator

Multiplicative Groups

Primitive Root Modulo N

Quotient Remainder Theorem

Square and Multiply

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Factors Calculator

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GCD by Trial Division Calculator

LCM by Euclidean Algorithm Calculator

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Sieve of Eratosthenes

Resources

Base64

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Podcasts

OWASP PDX

Open Web Application Security Project (OWASP), Portland, Oregon

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Open Web Application Security Project (OWASP), Portland, Oregon ​

Open Web Application Security Project (OWASP), Portland, Oregon