totp 2fa c# net core reactjs
https://deblokt.com/2020/01/24/07-identityserver4-mfa-totp-net-core-3-1/ рабочая версия https://github.com/kspearrin/Otp.NET <img src="data:image/png;base64, ..." /> https://github.com/esp0/googleAuthNet.git тут старая версия. it appears for google auth app its need to be used special algo this lib uses different algo so it's not work with google auth app : https://github.com/brandonpotter/GoogleAuthenticator