AES is a symmetric block encryption algorithm (block size 128 bits, key 128/192/256 bits), adopted as the encryption standard by the US government following the AES competition. The program uses 256 bit end-to-end encryption to protect your files with a key that you set yourself. This algorithm is quite fast because even large files are encrypted in a few seconds. For example, you can encrypt a USB flash drive and not be afraid to lose it, if you need to use it - the program will decrypt all data in less than 1 minute for a data volume of 30 GB.