dpj 3.5.0

A simple CLI tool for encrypting/hashing files and strings.

🔐 DPJ - CLI Data Cryptographic Tool

DPJ is a command-line data encryption tool, an improvement of Fixor 2.50(Discontinued). The Name Fixor changed to DPJ in honor of the my first encryption tool developed in QBasic and Visual Basic (2003–2007), DPJ is faster, more secure, and packed with new features designed to keep your data safe. Is a lightweight CLI tool, encrypt/decrypt files securely using custom method, build with python. Good tool to encrypt your work projects or your sensitive data(documents, PDFs, photos, videos, etc.).

⚡ Features

• 🔒 Encrypt & Decrypt Files using strong cryptography
• 🧠 Choose or Autogenerate Passphrase for encryption
• 🔐 KDF-powered Key Derivation to resist brute-force attacks
• 🧂 Secure Password Hashing with bcrypt (stored in encrypted metadata)
• 🧬 Encrypted Metadata using AES to protect internal config
• 🔍 File Scan Mode to check encryption details
• ✅ File Integrity Verification, a built-in verification step checks whether the decrypted data matches the original, ensuring the decryption process was successful.
• 🛡️ Tamper Protection: Files won’t be modified unless the passphrase is correct
• #️⃣ Hash tools included: Hash files/Msg using any theses algorithms (blake2b, sha3_512, sha256, sha1, sha512, shake_128, shake_256, sha3_256, blake2s, md5), In the absence of a specified algorithm, the default SHA256 will be applied.

🚀 Performance

DPJ improves on Fixor with significantly faster encryption and decryption processes, optimized for modern systems and large files.

🔧 Installation

You can install DPJ

++by cloning this repo:

git clone https://github.com/jheffat/dpj.git
cd dpj
python3 -m pip install

++install DPJ by pypi:

pip install dpj

++Download and install executable for windows :

DPJ 3.0.7 Installer.exe

🧪 Usage Examples

Encrypt all files including sub-directories with a key #R3ds0ftwar3!len3zz

dpj -e *.* -r -k #R3ds0ftwar3!len3zz    

Encrypt all files with the extension .JPG on the current path c:\pictures

dpj -e  c:\pictures\*.jpg     

Decrypt all files including in sub-directories on the current local

dpj -d *.* -r  

scan all files including in sub-directories on the current local

dpj -s *.* -r  

Hash all files using all algorithm

dpj -hs *.* -a all

📷 Screenshots

List of Files ready to be encrypted Encryption Process Decryption Process Scanning files encrypted Hashing a file Hashing a file with all algorithms Hashing all files using only the algorithm SHA256

🔐 Security Details

• KDF: Passphrases are transformed via a Key Derivation Function before use, making brute-force attempts extremely difficult.
• bcrypt: Passphrase hashes are stored using bcrypt to safely verify future attempts without revealing the key.
• AES Encryption: The metadata (containing the bcrypt hash) are encrypted with AES, the file content use different cryptographic method.
• No Overwrites: Files will not be altered if the provided passphrase is incorrect.
• Hash Verification: A post-decryption hash ensures that the data was correctly restored.

📜 License

This project is licensed under the MIT License - see the LICENSE file for details.

🙌 Acknowledgements

DPJ(Data protection Jeff), was my first encryption app crafted in QBasic(CLI) and Visual Basic(GUI) between 2003–2007. This project is a modern revival with more power, speed, and security, thanks to the powerful language PYTHON.