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YubiKey-Guide
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Merge pull request #133 from johnsoga/issue/132 

Update VM option
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@ -58,8 +58,6 @@ If you have a comment or suggestion, please open an [Issue](https://github.com/d
All YubiKeys except the blue "security key" model are compatible with this guide. NEO models are limited to 2048-bit RSA keys. Compare YubiKeys [here](https://www.yubico.com/products/yubikey-hardware/compare-products-series/). All YubiKeys except the blue "security key" model are compatible with this guide. NEO models are limited to 2048-bit RSA keys. Compare YubiKeys [here](https://www.yubico.com/products/yubikey-hardware/compare-products-series/).
You will also need several small storage devices for booting a temporary operating system and creating backups of private/public keys.
# Verify YubiKey # Verify YubiKey
To verify a YubiKey is genuine, open a [browser with U2F support](https://support.yubico.com/support/solutions/articles/15000009591-how-to-confirm-your-yubico-device-is-genuine-with-u2f) to [https://www.yubico.com/genuine/](https://www.yubico.com/genuine/). Insert a Yubico device, and select *Verify Device* to begin the process. Touch the YubiKey when prompted, and if asked, allow it to see the make and model of the device. If you see *Verification complete*, the device is authentic. To verify a YubiKey is genuine, open a [browser with U2F support](https://support.yubico.com/support/solutions/articles/15000009591-how-to-confirm-your-yubico-device-is-genuine-with-u2f) to [https://www.yubico.com/genuine/](https://www.yubico.com/genuine/). Insert a Yubico device, and select *Verify Device* to begin the process. Touch the YubiKey when prompted, and if asked, allow it to see the make and model of the device. If you see *Verification complete*, the device is authentic.
@ -68,8 +66,12 @@ This website verifies the YubiKey's device attestation certificates signed by a
# Download OS Image # Download OS Image
You will need several small storage devices for booting a temporary operating system and creating backups of your private/public keys.
It is recommended to generate cryptographic keys and configure YubiKey from a secure operating system and using an ephemeral environment ("live image"), such as [Debian](https://www.debian.org/CD/live/), [Tails](https://tails.boum.org/index.en.html), or [OpenBSD](https://www.openbsd.org/) booted from a USB drive. It is recommended to generate cryptographic keys and configure YubiKey from a secure operating system and using an ephemeral environment ("live image"), such as [Debian](https://www.debian.org/CD/live/), [Tails](https://tails.boum.org/index.en.html), or [OpenBSD](https://www.openbsd.org/) booted from a USB drive.
Depending on your threat model and/or level of inherent trust in your own system. It is also a valid option to run the "live image" within a VM using something like Virtualbox or VMWare
To use Debian, download the latest image: To use Debian, download the latest image:
```console ```console
@ -152,9 +154,9 @@ $ doas dd if=debian-live-10.0.0-amd64-xfce.iso of=/dev/rsd2c bs=4m
1951432704 bytes transferred in 139.125 secs (14026448 bytes/sec) 1951432704 bytes transferred in 139.125 secs (14026448 bytes/sec)
``` ```
Shut down the computer and disconnect internal hard drives and all unnecessary peripheral devices. Shut down the computer and disconnect internal hard drives and all unnecessary peripheral devices. If being run within a VM this part can be skipped as no such devices should be attached to the VM since the image will still be run as a "live image"
Consider using secure hardware like a ThinkPad X230 running [Coreboot](https://www.coreboot.org/) and [cleaned of Intel ME](https://github.com/corna/me_cleaner). If on physical hardware consider using secure hardware like a ThinkPad X230 running [Coreboot](https://www.coreboot.org/) and [cleaned of Intel ME](https://github.com/corna/me_cleaner).
# Required software # Required software