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h1. Authentification

https://github.com/conorpp/u2f-zero
U2F Zero
U2F Zero is an open source U2F token for 2 factor authentication. It is implemented securely. It works with Google accounts, Github, Duo, OpenSSH, and anything else supporting U2F.

https://raymii.org/s/articles/Get_Started_With_The_Nitrokey_HSM.html#SSH_Keys_with_the_HSM

https://sec2016.rmll.info/programme/#usb-armory
https://sec2016.rmll.info//files/
https://sec2016.rmll.info//files/20160704-02-Barisani-forging_the_usb_armory.pdf