Files with the .AFP extension contain files encrypted by Androsa FileProtector, a free professional file encryption tool for Windows. The software allows for encryption using AES 256-bit, 192-bit, and 128-bit, TripleDES 192-bit, as well as DES 64-bit.

In a nutshell, the encryption offered by Androsa FileProtector allows for the protection of the contents of a given file from unauthorized access using an advance cryptographic system.