gpg

https://www.gnupg.org/

Install

macOS

$ brew install gpg

Check the version:

$ gpg --version
gpg (GnuPG) 2.4.5
libgcrypt 1.10.3
Copyright (C) 2024 g10 Code GmbH
License GNU GPL-3.0-or-later <https://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Home: /Users/xxxx/.gnupg
支持的算法：
公钥： RSA, ELG, DSA, ECDH, ECDSA, EDDSA
密文： IDEA, 3DES, CAST5, BLOWFISH, AES, AES192, AES256, TWOFISH,
    CAMELLIA128, CAMELLIA192, CAMELLIA256
散列： SHA1, RIPEMD160, SHA256, SHA384, SHA512, SHA224
压缩：  不压缩, ZIP, ZLIB, BZIP2

Usage

Generate key

$ gpg --full-generate-key

List keys

List public keys:

$ gpg -k
$ gpg --list-keys

List secret keys:

$ gpg -K
$ gpg --list-secret-keys

Import key

$ gpg --import xxxx-key-file

Verify

$ gpg --verify *.sig

Delete key

$ gpg --delete-keys xxxx-key-fingerprint

Key servers

$ gpg --keyserver hkp://pool.sks-keyservers.net --send-keys xxxx-key-fingerprint
$ gpg --keyserver hkp://pool.sks-keyservers.net --recv-keys xxxx-key-fingerprint
$ gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys xxxx-key-fingerprint

Export

$ gpg --export-secret-keys > secring.gpg

Show keys in the exported file:

$ gpg --show-keys secring.gpg

Renew expired keys

$ gpg --edit-key xxxx-key-fingerprint

In gpg command line:

expire
save
quit