add implementing affine cipher tutorial

Author: x4nth055

Diff for: README.md

@@ -51,6 +51,7 @@ This is a repository of all the tutorials of [The Python Code](https://www.thepy
     - [How to Crack the Caesar Cipher in Python](https://thepythoncode.com/article/how-to-crack-caesar-cipher-in-python). ([code](ethical-hacking/caesar-cipher))
     - [How to Lock PDFs in Python](https://thepythoncode.com/article/lock-pdfs-in-python). [(code)](ethical-hacking/pdf-locker)
     - [How to Create a Custom Wordlist in Python](https://thepythoncode.com/article/make-a-wordlist-generator-in-python). ([code](ethical-hacking/bruteforce-wordlist-generator))
+    - [How to Implement the Affine Cipher in Python](https://thepythoncode.com/article/how-to-implement-affine-cipher-in-python). ([code](ethical-hacking/implement-affine-cipher))
 
 - ### [Machine Learning](https://www.thepythoncode.com/topic/machine-learning)
     - ### [Natural Language Processing](https://www.thepythoncode.com/topic/nlp)

Diff for: ethical-hacking/implement-affine-cipher/README.md

@@ -0,0 +1 @@
+# [How to Implement the Affine Cipher in Python](https://thepythoncode.com/article/how-to-implement-affine-cipher-in-python)

Diff for: ethical-hacking/implement-affine-cipher/affine_cipher.py

@@ -0,0 +1,47 @@
+# Import necessary libraries.
+import string
+from colorama import init, Fore
+
+# Initialise colorama.
+init()
+
+
+# Function to perform Affine Cipher encryption.
+def affine_encryption(plaintext, a, b):
+    # Define the uppercase alphabet.
+    alphabet = string.ascii_uppercase
+    # Get the length of the alphabet
+    m = len(alphabet)
+    # Initialize an empty string to store the ciphertext.
+    ciphertext = ''
+
+    # Iterate through each character in the plaintext.
+    for char in plaintext:
+        # Check if the character is in the alphabet.
+        if char in alphabet:
+            # If it's an alphabet letter, encrypt it.
+            # Find the index of the character in the alphabet.
+            p = alphabet.index(char)
+            # Apply the encryption formula: (a * p + b) mod m.
+            c = (a * p + b) % m
+            # Append the encrypted character to the ciphertext.
+            ciphertext += alphabet[c]
+        else:
+            # If the character is not in the alphabet, keep it unchanged.
+            ciphertext += char
+
+    # Return the encrypted ciphertext.
+    return ciphertext
+
+
+# Define the plaintext and key components.
+plaintext = input(f"{Fore.GREEN}[?] Enter text to encrypt: ")
+a = 3
+b = 10
+
+# Call the affine_encrypt function with the specified parameters.
+encrypted_text = affine_encryption(plaintext, a, b)
+
+# Print the original plaintext, the key components, and the encrypted text.
+print(f"{Fore.MAGENTA}[+] Plaintext: {plaintext}")
+print(f"{Fore.GREEN}[+] Encrypted Text: {encrypted_text}")

Diff for: ethical-hacking/implement-affine-cipher/requirements.txt

@@ -0,0 +1 @@
+colorama