The application uses John Walker's very useful and accessible in the Internet implementation of a fast Base 64 encoding and decoding scheme. Presented worksheet allows to perform fast transport encoding and encrypting of files of an arbitrary format. The secret key in the application is embedded. It can easily be generated using the `keygen` procedure and an arbitrary `password` string. Evidently, many procedures for key generation may be implemented. The user can also himself directly construct the global variables `b2o`, `o2b`, `f2o` and `o2f` used in the encryption/decryption procedures. The code of the application in the startup code region and in the combobox `select action` is stored.

Note: For proper functioning of this application, this application must be saved in a location with no spaces in the path name, e.g. C:\transport.