Multron File Guardian

Multron File Guardian is a file protection system that implements cryptographic algorithms. The software transforms data into an encrypted format using modern encryption methods. The system guarantees confidentiality through robust cryptographic protocols.

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• AES Encryption. Advanced Encryption Standard algorithm with a 256-bit key size. Implements block cipher in CBC mode. Processes data in 128-bit blocks with matrix transformations.
• Serpent Algorithm. Symmetric block cipher with a 128-bit block size. Uses 32 transformation rounds with a 256-bit key. Its design offers high resistance against cryptanalytic attacks.
• Twofish Encryption. Symmetric algorithm with a 128-bit block and key up to 256 bits. Applies preliminary and final whitening transformations. Employs an adaptable Feistel network in the round structure.
• ThreeFish Algorithm. Block cipher with block sizes of 256, 512, or 1024 bits. Based on a tweakable block cipher construction. Includes 72 transformation rounds with a tweak value.
• Camellia Encryption. Symmetric algorithm with a 128-bit block and a 128, 192, or 256-bit key. Uses 18 rounds for a 128-bit key and 24 rounds for larger keys. Applies FL and FL^(-1) transformations in specific rounds.
• ChaCha20 Algorithm. Stream cipher with a 256-bit key and a 64-bit nonce. Executes 20 transformation rounds based on the ARX operation. Generates a keystream for XOR operation with the plaintext.
• SM4 Encryption. Chinese national standard with a 128-bit block size. Uses 32 transformation rounds with non-linear S-boxes. Employs a 128-bit key with a key expansion procedure.
• Hybrid RSA Encryption. Combined system with asymmetric RSA and a symmetric algorithm. RSA performs session key encapsulation. Configurable RSA key length from 2048 to 16384 bits.
• Argon2id Key Derivation. Password-based key derivation function. Uses the Argon2 hybrid variant with protection against side-channel attacks. Configurable memory in the range of 256, 512, 1024 megabytes.
• Iterative Password Strengthening. Multiple hashing of the password to increase brute-force complexity. Number of iterations set by the user. Multiplication of computational complexity for dictionary attacks.
• Pre-Encryption Compression. Algorithm for data size reduction before cryptographic transformation. Compression increases storage efficiency. Reduction of informational redundancy before encryption.
• Encrypt-then-MAC Mode. Procedure for authenticating encrypted data. Encryption is performed first, followed by the calculation of the authentication code. Protection against modification of the encrypted content.
• Random Parameter Generation. Creation of a unique initialization vector for each file. Formation of a random salt for key derivation. Guarantee of a different result with the same input.
• Screen Capture Blocking. Protection of the interface against copying via system functions. Prevention of screenshots of the window. Technical implementation through system API calls.
• Multron NoteGuard Utility. Specialized module for protecting textual notes. Uses a separate file format with the .mng extension. Applies similar cryptographic algorithms with adapted parameters.

The development of Multron File Guardian began in 2023. Project creator - drwellss. The program is written in the Python language with cryptographic libraries. The system architecture is designed for modular expansion of functionality. The codebase supports the addition of new encryption algorithms.

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