Encryption methods are not important to us, the most important thing is that everything works perfectly. So it doesn't matter if you encrypt the data to be transmitted via bcrypt or just using a double key.
Found the answer to my question, if anyone is interested, here it is.
You then need to order the development of companies that have already done approximate work. Since you need increased security for the application, as well as for the system to quickly and accurately recognize faces. Which is very important at the moment. You can apply to this company for the development of an application for facial recognition https://owlab.group/our-blog/post/how-to-build-your-own-face-recognition-app. They have a sufficient number of highly qualified specialists in this area of development.