03 - Create a new CrypTool 2 Component (CrypTool 2 Development Series) скачать в хорошем качестве

03 - Create a new CrypTool 2 Component (CrypTool 2 Development Series)

#cryptology, #cryptography, #cryptanalysis In this video, we show how to develop a new CrypTool 2 component from the scratch. You need: Visual Studio 2019 Community Edition, the CrypTool 2 component template for Visual Studio, and the CrypTool 2 source code. How to get all of these, please have a look at video 1 of this series (   • 01 - Installation of TortoiseSVN, VS2019, ...  ) if not already done. ------------------------- Hint: (update 01 oct 2020): There is a problem when using the standard modulo operator of .net/C#. It may return negative numbers, which the math. operator does not. Therefore, we have to "fix" it using a method implementing the math. operator. So replace % in your code by the following method call: private int Mod(int a, int b) { if(a GREATER_OR_EQUAL 0) // youtube does not allow the greater parenthesis symbol here; { return a % b; } else { return ((a % b) + b) % b; } } ------------------------- Check list: ------------------------- Step 1: Create new plugin project (using the plugin template in Visual Studio 2019) Step 2: Rename plugin class file and rename settings class file Step 3: Adapt plugin class attributes Step 4: Create input properties (A, B, Input) and an output property (Output) Step 5: Adapt and rename settings class : We need a way to switch between encryption and decryption action Step 6: Implement Execution() method in plugin class (and needed helper methods) Step 7: Compile and then test everything in CrypTool 2 Affine cipher definitions: ------------------------- Encryption: C = (A * P + B) mod M Decryption: P = (A^-1 * (C - B)) mod M where C is a ciphertext symbol as integer, P is a plaintext symbol as integer, M is the modulus, A and B are integers (keys of the cipher), A^-1 is the modular multiplicative inverse of A modulo M In our case M = 26 since our alphabet is the Latin alphabet "ABCDEFGHIJKLMNOPQRSTUVWXYZ" which has length 26 Like what I do 😄? Help fuel my crypto obsession 🎓 — buy me a coffee here☕— thx: https://buymeacoffee.com/cryptography...