symmetric-encryption-algorithm

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SyedShaheerHussain / Secure-File-Encryption-Decryption-Tool-GUI-

Encrypts and decrypts files using AES-256-GCM with PBKDF2, featuring a password meter, progress tracking, and a user-friendly interface.

hashing error-handling aes-256 encryption-decryption symmetric-key-cryptography symmetric-encryption-algorithm audit-trail salting symmetric-cryptography symmetric-encryption file-handling-in-python

Updated Feb 22, 2026
Python

keirakaitlynn / MonoalphabeticSubstitutionCiphers

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Program that encrypts plaintext and (attempts) to decrypt ciphertexts, encrypted via a mono-alphabetic substitution cipher. Replaces letters based on frequency / n-gram analysis. Tried to incorporate hill-climbing algorithm by measuring the fitness of resulting texts to find the best key.

python cryptography encryption cryptanalysis cipher algorithms n-grams decryption hill-climbing substitution frequency-analysis substitution-cipher decipher symmetric-key-cryptography symmetric-encryption-algorithm symmetric monoalphabetic cryptanalytical monoalphabetic-cipher

Updated Oct 3, 2020
Python

jElhamm / Crypto-Algorithms

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"A collection of implemented symmetric and asymmetric cryptographic algorithms."

Updated Mar 9, 2025
Python

FHArchive / Python.SymEncryptorV2

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This is an symmetric encryption algorithm. It is a more glorified version of a substitution cipher. However, some substitutions are added that do not correspond to a letter to try and confuse anyone trying to break the cipher

python substitution-cipher symmetric-encryption-algorithm