Remove ancient keyservers
drduh
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703c6aa37f
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README.md
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README.md
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@ -2,12 +2,12 @@ This is a guide to using [YubiKey](https://www.yubico.com/products/yubikey-hardw
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Keys stored on YubiKey are [non-exportable](http://web.archive.org/web/20201125172759/https://support.yubico.com/hc/en-us/articles/360016614880-Can-I-Duplicate-or-Back-Up-a-YubiKey-) (as opposed to file-based keys that are stored on disk) and are convenient for everyday use. Instead of having to remember and enter passphrases to unlock SSH/GPG keys, YubiKey needs only a physical touch after being unlocked with a PIN. All signing and encryption operations happen on the card, rather than in OS memory.
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**Tip** [drduh/Purse](https://github.com/drduh/Purse) is a password manager which uses GPG and YubiKey to securely store and read credentials.
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> **Security Note**: If you followed this guide before Jan 2021, your GPG *PIN* and *Admin PIN* may be set to their default values (`123456` and `12345678` respectively). This would allow an attacker to use your Yubikey or reset your PIN. Please see the [Change PIN](#change-pin) section for details on how to change your PINs.
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**Security Note**: If you followed this guide before Jan 2021, your GPG *PIN* and *Admin PIN* may be set to their default values (`123456` and `12345678` respectively). This would allow an attacker to use your Yubikey or reset your PIN. Please see the [Change PIN](#change-pin) section for details on how to change your PINs.
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If you have a comment or suggestion, please open an [Issue](https://github.com/drduh/YubiKey-Guide/issues) on GitHub.
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**Tip** [drduh/Purse](https://github.com/drduh/Purse) is a password manager which uses GPG and YubiKey to securely store and read credentials.
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- [Purchase](#purchase)
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- [Prepare environment](#prepare-environment)
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- [Required software](#required-software)
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@ -602,6 +602,7 @@ charset utf-8
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fixed-list-mode
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no-comments
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no-emit-version
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no-greeting
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keyid-format 0xlong
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list-options show-uid-validity
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verify-options show-uid-validity
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@ -612,7 +613,7 @@ use-agent
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throw-keyids
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```
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**Important** Disable networking for the remainder of the setup.
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**Tip** Networking can be disabled for the remainder of the setup.
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# Master key
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@ -646,7 +647,6 @@ Do **not** set the master (certify) key to expire - see [Note #3](#notes).
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```console
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$ gpg --expert --full-generate-key
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Please select what kind of key you want:
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(1) RSA and RSA (default)
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(2) DSA and Elgamal
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@ -658,6 +658,7 @@ Please select what kind of key you want:
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(10) ECC (sign only)
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(11) ECC (set your own capabilities)
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(13) Existing key
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(14) Existing key from card
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Your selection? 8
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Possible actions for a RSA key: Sign Certify Encrypt Authenticate
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@ -1408,14 +1409,16 @@ $ gpg -o \path\to\dir\pubkey.gpg --armor --export $KEYID
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```console
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$ gpg --send-key $KEYID
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$ gpg --keyserver pgp.mit.edu --send-key $KEYID
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$ gpg --keyserver keys.gnupg.net --send-key $KEYID
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$ gpg --keyserver hkps://keyserver.ubuntu.com:443 --send-key $KEYID
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```
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After some time, the public key will propagate to [other](https://pgp.key-server.io/pks/lookup?search=doc%40duh.to&fingerprint=on&op=vindex) [servers](https://pgp.mit.edu/pks/lookup?search=doc%40duh.to&op=index).
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Or if [uploading to keys.openpgp.org](https://keys.openpgp.org/about/usage):
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```console
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gpg --send-key $KEYID | curl -T - https://keys.openpgp.org
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```
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# Configure Smartcard
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@ -2321,8 +2324,6 @@ $ gpg --import pubkey.asc
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N.B.: The `showpref` command can be issued to ensure that the notions were correctly added.
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It is now possible to continue following the Keyoxide guide and upload the key to WKD or to keys.openpgp.org.
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# SSH
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**Tip** If you want to use a YubiKey for SSH only (and don't really care about PGP/GPG), then [since OpenSSH v8.2](https://www.openssh.com/txt/release-8.2) you alternatively can simply `ssh-keygen -t ed25519-sk` (without requiring anything else from this guide!), as explained [in this guide](https://github.com/vorburger/vorburger.ch-Notes/blob/develop/security/ed25519-sk.md). Yubico also recently announced support for resident ssh keys under OpenSSH 8.2+ on their blue "security key 5 nfc" as mentioned in their [blog post](https://www.yubico.com/blog/github-now-supports-ssh-security-keys/)._
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