gpgconf to modify and update gpg-agent settings, restart the service etc

gpgconf --help

gpgconf --kill gpg-agent

gpg -k
gpg --list-sigs

# Works for secret and public keys
gpg --import [filename]

gpg --gen-key
gpg --gen-revoke --armor --output=RevocationCertificate.asc [email]

gpg --delete-secret-keys
gpg --delete-keys

# Fingerprints give a shorter to verify hash of public keys
gpg --fingerprint [email]

gpg --sign-key [email]
gpg --interactive --edit-key [email]

gpg --armor --export[-secret-keys] [-o file] [-a ID | email]

# *Don't forget to add yourself to the recipients*
gpg [-o output] --sign --armor [-r recipient] [-e file]

gpg  -o output -d file

gpg --clearsign file

gpg --verify file

gpg --interactive --edit-key [email]
# Then 'showpref' will show algorithm preferences
# from most - least.
modify using 'setpref [algorithms..]'
# then 'save'

https://www.sslshopper.com/article-most-common-openssl-commands.html

/etc/ssl/certs - linux /usr/local/etc/openssl/cert.pem -mac

https://emacs.stackexchange.com/questions/32881

use epg package, set epg-pinentry-mode to ‘loopback

add “allow-emacs-pinentry” to “~/.gnupg/gpg-agent.conf”, and set pinentry-program to pinentry-mac’s path in gpg-agent.conf

reload the configuration with “gpgconf –reload gpg-agent”, and

Create Key Create Revocation Cert Create Fingerprint Export Public and Secret Keys Backup [Public, Secret, Revocation]

Import other persons public key Verify it against their fingerprint Sign the Key (optional, give the signed key back by exporting it)

Then decrypt messages sent to you, encrypt messages to them using their public key, or verify they sent a plaintext signature.

# Generates {ssh-key-name} (private) and {ssh-key-name}.pub (public)
ssh-keygen -t ed25519 -b 4096 -C "{[email protected]}" -f {ssh-key-name}

ssh-add {ssh-key-name}

Host bitbucket.org
AddKeysToAgent yes
IdentityFile ~/.ssh/{ssh-key-name}

ssh -T [email protected]

GPG General Howto https://support.atlassian.com/bitbucket-cloud/docs/set-up-personal-ssh-keys-on-linux/#Create-an-SSH-key-pair https://docs.github.com/en/authentication/connecting-to-github-with-ssh/about-ssh ssh-config-bad-configuration-option-usekeychain-on-mac-os-sierra-10-12-6 ssh-key-still-asking-for-password-and-passphrase