mfa

mfa ("multi-factor authentication") is a command line tool for generating and validating one-time password.

Description:

• An easy-to-use substitute for 2FA apps like Google authenticator.
• Supports the OATH algorithms, such as TOTP and HOTP.
• No need for network connection.
• No need for phone.

Installation

go mod tidy
go build -v

Usage

mfa qr [flags] <image-path>
mfa gen [flags] <secret-key>
mfa add [flags] <issuer> <secret-key>
mfa set [flags] <issuer> <secret-key>
mfa del <issuer>
mfa list <issuer>
mfa version

Flags:
 -m, --mode string  time-variant TOTP or event-based HOTP (default "totp")
 -H, --hash string  hash method (SHA1, SHA256, SHA512) (default "SHA1")
 -i, --period int   period of calculate otp for TOTP (default 30)
 -l, --digits int   otp length for HOTP (default 6)
 -c, --counter int  number of iterations count for HOTP

Examples

Generate code

Generate a time-based otp but do not save the secret key

mfa gen ADOO3MCCCVO5AVD6

Generate a counter-based otp with counter 1

mfa gen -m hotp -c 1 ADOO3MCCCVO5AVD6

Create account

Create an account by qr code

mfa qr image.png

Create an account named GitHub

mfa add GitHub ADOO3MCCCVO5AVD6

Create an account, the issuer is GitHub, the user is ozgur-yalcin

mfa add GitHub:ozgur-yalcin ADOO3MCCCVO5AVD6

List account

List all accounts

mfa list 

List all accounts named GitHub

mfa list GitHub

List accounts whose issuer is GitHub and whose user is ozgur-yalcin

mfa list GitHub:ozgur-yalcin

Delete accounts

Delete all accounts named GitHub

mfa del GitHub

Delete accounts whose issuer is GitHub and whose user is ozgur-yalcin

mfa del GitHub:ozgur-yalcin

Update account

Update the secret key of accounts which issuer is GitHub

mfa set GitHub 5BRSSSBJUWBQBOXE

Update the secret key of accounts which issuer is GitHub and the user is ozgur-yalcin

mfa set GitHub:ozgur-yalcin 5BRSSSBJUWBQBOXE

License

MIT License, see license.md.