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Open source version of Google Authenticator (except the Android app)
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Latest commit 775a202 @ThomasHabets ThomasHabets Merge pull request #526 from msantos/fix-alloc … 
libpam/demo: fix overflow in code input
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libpam libpam/demo: fix overflow in code input
mobile Fixing incorrect PIN computation on platforms where
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README.md

Google Authenticator OpenSource

Build Status

The Google Authenticator project includes implementations of one-time passcode generators for several mobile platforms, as well as a pluggable authentication module (PAM). One-time passcodes are generated using open standards developed by the Initiative for Open Authentication (OATH) (which is unrelated to OAuth).

The Android app is in a separate project.

These apps are not on the app stores, and their code has diverged from what's in the app stores, so patches here won't necessarily show up in those versions.

These implementations support the HMAC-Based One-time Password (HOTP) algorithm specified in RFC 4226 and the Time-based One-time Password (TOTP) algorithm specified in RFC 6238.

Further documentation is available in the Wiki.

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