How to Implement a Caesar Cipher for Basic Encryption

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How to Implement a Caesar Cipher for Basic Encryption

How to Implement a Caesar Cipher for Basic Encryption

I want to create a simple Caesar cipher to shift characters in a string by a specific number of places. How can I do this?

solveurit24@gmail.com Changed status to publish February 16, 2025
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1 Answer

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A Caesar cipher shifts each letter in the string by a certain number of places down the alphabet.

Code Example:

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def caesar_cipher(text, shift):
    encrypted = []
    for char in text:
        if char.isalpha():
            shifted = chr(ord(char.lower()) + shift)
            if shifted > 'z':
                shifted = chr(ord(shifted) - 26)
            encrypted_char = shifted.upper() if char.isupper() else shifted
            encrypted.append(encrypted_char)
        else:
            encrypted.append(char)
    return ''.join(encrypted)

# Example usage
print(caesar_cipher("Hello, World!", 3))  # Output: "Khoor, Zruog!"

This function shifts each letter by the specified number of places, wrapping around if necessary, and maintains the case of the original text.

solveurit24@gmail.com Changed status to publish February 16, 2025
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