./security/2fa, Command-line client for two-factor authentication

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Branch: CURRENT, Version: 20171122, Package name: 2fa-20171122, Maintainer: bsiegert

2fa is a two-factor authentication agent.

"2fa -add name" adds a new key to the 2fa keychain with the given name. It
prints a prompt to standard error and reads a two-factor key from standard
input. Two-factor keys are short case-insensitive strings of letters A-Z and
digits 2-7.

"2fa name" prints a two-factor authentication code from the key with the
given name.

With no arguments, "2fa" prints two-factor authentication codes from all
known time-based keys.

The default time-based authentication codes are derived from a hash of the
key and the current time, so it is important that the system clock have at
least one-minute accuracy.

The keychain is stored unencrypted in the text file "$HOME/.2fa".


Required to build:
[lang/go] [pkgtools/cwrappers]

Master sites:


Version history: (Expand)


CVS history: (Expand)


   2017-11-27 19:47:09 by Benny Siegert | Files touched by this commit (4)
Log message:
Add 2fa version 20171122.

From DESCR:

2fa is a two-factor authentication agent.

"2fa -add name" adds a new key to the 2fa keychain with the given name. It
prints a prompt to standard error and reads a two-factor key from standard
input. Two-factor keys are short case-insensitive strings of letters A-Z and
digits 2-7.

"2fa name" prints a two-factor authentication code from the key with the
given name.

With no arguments, "2fa" prints two-factor authentication codes from all
known time-based keys.

The default time-based authentication codes are derived from a hash of the
key and the current time, so it is important that the system clock have at
least one-minute accuracy.

The keychain is stored unencrypted in the text file "$HOME/.2fa".