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Code Issues Releases Wiki Activity

Adds warning about PUK being default

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Nemo 2020-12-25 12:52:37 +05:30
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@ -4,6 +4,8 @@ Keys stored on YubiKey are [non-exportable](https://support.yubico.com/support/s
**New!** [drduh/Purse](https://github.com/drduh/Purse) is a password manager which uses GPG and YubiKey.
**Security Note**: If you followed this guide before Jan 2021, your PUK (Pin Unblock Key) may be set to its default value of `12345678`. An attacker can use this to reset your PIN and use your Yubikey. Please see the [Change PUK](#change-puk) section for details on how to change your PUK.
If you have a comment or suggestion, please open an [Issue](https://github.com/drduh/YubiKey-Guide/issues) on GitHub.
- [Purchase](#purchase)
@ -326,7 +328,7 @@ From YubiKey firmware version 5.2.3 onwards - which introduces "Enhancements to
## YubiKey
To feed the system's PRNG with entropy generated by the YubiKey itself, issue:
```console
```console
$ echo "SCD RANDOM 512" | gpg-connect-agent | sudo tee /dev/random | hexdump -C
```
This will seed the Linux kernel's PRNG with additional 512 bytes retrieved from the YubiKey.