The ASL Crypto Manager program is intended for fast encrypting of any user’s files. For this purpose, RC4, a high-speed on-the-fly algorithm of encrypting, is used in the program. The program allows to encrypt any taken file and to pass it safely to the other person, using the common ways (portable data medium, e-mail message, local area network, etc.). Prior to the encrypting of any file, a key word is being set up; without knowing the password, it’s impossible to decrypt the file by means of any program or any other way. The program also allows to carry out encrypting of multiple files (encrypting of several files at one pass) with identical or different passwords.