Re: Re: [QUESTION]Is it possible that git would support two-factor authentication?

[Johannes Schindelin <Johannes.Schindelin@gmx.de>]

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Hi,

On Fri, 13 Aug 2021, lilinchao@oschina.cn wrote:

> >On 8/11/2021 7:00 AM, lilinchao@oschina.cn wrote:
> >> Many websites support two-factor authentication(2FA) to log in, like Github, I wander if we can support it in application layer.
> >> When client clone something, they need  input username and password, it is like a website login process. For security, we can
> >> enable  2FA during this process.
> >
> >Typically, this is handled at the credential helper layer, which
> >is a tool outside of the Git codebase that can more closely work
> >with such 2FA/MFA requirements. For example, GCM Core [1] supports
> >2FA with GitHub, Azure DevOps, and BitBucket.
> >
> >[1] https://github.com/microsoft/Git-Credential-Manager-Core
> >
> >The mechanism is that Git attempts an operation and gets an error
> >code, so it asks for a credential from the helper. The helper
> >then communicates with the server to do whatever authentication
> >is required, including possibly performing multi-factor auth.
> >All of these details are hidden from Git, which is good.
> >
> Indeed, this is good, I've experienced this tool these days at WSL and Windows,
> but finally I hope these features can be supported by Git itself, and then the user end can easily configure it.

The problem here is that 2FA is highly provider-specific. And that's why
Git itself refuses to implement it. Hence the credential helper layer.

Ciao,
Johannes