Guaranteed protection of digital data is a primary duty of every business and corporation. DEFINITION File Package Manager (FPM II) is a specialized application for encrypting files and folders located on local, network, or external servers, as well as on external data media. The application allows the following actions: • Encrypt or decrypt selected files and folders; • Exchange of encrypted files and messages; • Protected file packages; • Electronic crypto notebooks; • Encrypting the files in the package; • Decrypting the files in the package; • File integrity check; • File modification control; • Checking the current status of files and directories; • Shredding and/or sanitizing the files saved in the package, etc. The encryption of the files for which meta-information is available in the packages and which are physically accessible is performed based on session crypto mechanisms. Each crypto mechanism uses a set of proven cryptographic primitives. Configuration of crypto primitives is done automatically. All operations on the files and folders saved in the package are performed only when the files and folders are physically accessible. If they cannot be accessed (deleted, physically inaccessible network drive, or other reason), this will be reflected in the packet, recording the time when this finding was made. FIELD OF APPLICATION Protecting large arrays of files stored on various media is a complex and challenging process to implement. The use of file packages allows the automation of this process, increases service efficiency, and significantly improves the security of corporate solutions. Storing, editing, transferring, and destroying files is a process that is often overlooked in its importance by both users and those responsible for security. Statistics prove that most threats to information security originate from internal sources. With the help of FPM, it is possible to neutralize all these problems through a highly effective professional cryptosystem using secure file packages. The standardized digital data encryption algorithms used in FPM are identical to those used by specialized government agencies. Unlike similar solutions, FPM allows control and documentation of file package processes in real-time. This makes the application an indispensable tool when building cybersecurity systems that meet the requirements of ISO/IEC 27001 and ISO/IEC 27002. The application's hybrid functions use proven algorithms described in NIST SP 800-88 and NIST SP 800-90A, which include Hash DRBG (Hash Function Based), HMAC DRBG (HMAC Based), and CTR DRBG ( based on block ciphers in counter mode), as well as some specific solutions used in BS 1443 technology. TECHNOLOGICAL SOLUTIONS The choice of proven symmetric cryptographic algorithms guarantees the high efficiency and reliability of the application. FPM uses a set of standard algorithms to build specialized mechanisms for encrypting digital data. FPM uses a set of standard algorithms to build specialized mechanisms for preventing both external and internal threats. The following standard algorithms are used in the base version: STANDARD ENCRYPTION ALGORITHMS • Advanced Encryption Standard (block size of 128 bits, key lengths: 128, 192, and 256 bits); • Blowfish; • CAST-128 (CAST-5); • CAST-256 (CAST-6); • Information Concealment Engine (ICE); • Information Concealment Engine 2 (ICE-2); • ICE Encrypt; • MISTY-1 (Mitsubishi Improved Security Technology); • Ron's Code 2 or Rivest's Cipher 2 (RC-2); • Ron's Code 4 or Rivest's Cipher 4 (RC-4); • Ron's Code 5 or Rivest's Cipher 5 (RC-5); • Ron's Code 6 or Rivest's Cipher 6 (RC-6); • Serpent; • Tiny Encryption Algorithm (TEA); • Twofish. AFFORDABLE HASH FUNCTIONS • Secure Hash Algorithm 1 [SHA-1]; • RIPEMD-160; • Haval [256 Bit, 5 passes]; • Message Digest 5 [MD-5]; • Message Digest 4 [MD-4]; • Tiger; • RIPEMD-128; • SHA-256 (SHA-2 family); • SHA-384 (SHA-2 family); • SHA-512 (SHA-2 family).