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Where does CentOS/RHEL 6 store custom GPG keys? I thought /etc/pki/rpm-gpg but I installed nginx's key but unable to find it. I see it was imported properly but where is it?

wget http://nginx.org/keys/nginx_signing.key
rpm --import nginx_signing.key

[root@web1-ftl rpm-gpg]# rpm -qi gpg-pubkey-7bd9bf62-4e4e3262
Name        : gpg-pubkey                   Relocations: (not relocatable)
Version     : 7bd9bf62                          Vendor: (none)
Release     : 4e4e3262                      Build Date: Wed 05 Feb 2014 03:26:35 AM UTC
Install Date: Wed 05 Feb 2014 03:26:35 AM UTC      Build Host: localhost
Group       : Public Keys                   Source RPM: (none)
Size        : 0                                License: pubkey
Signature   : (none)
Summary     : gpg(nginx signing key <signing-key@nginx.com>)
Description :
-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: rpm-4.8.0 (NSS-3)

mQENBE5OMmIBCAD+FPYKGriGGf7NqwKfWC83cBV01gabgVWQmZbMcFzeW+hMsgxH
W6iimD0RsfZ9oEbfJCPG0CRSZ7ppq5pKamYs2+EJ8Q2ysOFHHwpGrA2C8zyNAs4I
QxnZZIbETgcSwFtDun0XiqPwPZgyuXVm9PAbLZRbfBzm8wR/3SWygqZBBLdQk5TE
fDR+Eny/M1RVR4xClECONF9UBB2ejFdI1LD45APbP2hsN/piFByU1t7yK2gpFyRt
97WzGHn9MV5/TL7AmRPM4pcr3JacmtCnxXeCZ8nLqedoSuHFuhwyDnlAbu8I16O5
XRrfzhrHRJFM1JnIiGmzZi6zBvH0ItfyX6ttABEBAAG0KW5naW54IHNpZ25pbmcg
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Va3l3WuB+rgKjsQ=
=A015
-----END PGP PUBLIC KEY BLOCK-----
Dave M
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  • question similar to http://unix.stackexchange.com/questions/28479/when-importing-a-key-during-a-yum-installation-where-is-that-key-stored – Franklin Piat Mar 14 '15 at 21:23

1 Answers1

9

They are stored in the RPM database, which is in /var/lib/rpm. From the manpage

Digital signatures cannot be verified without a public key.  An ASCII 
armored public  key  can  be added  to  the rpm database using --import. An 
imported public key is carried in a header, and keyring management is 
performed exactly like package management. For example, all currently  
imported public keys can be displayed by:

rpm -qa gpg-pubkey*

Details about a specific public key, when imported, can be displayed by 
querying.  Here’s information about the Red Hat GPG/DSA key:

rpm -qi gpg-pubkey-db42a60e

Finally, public keys can be erased after importing just like packages. 
Here’s how  to  remove  the Red Hat GPG/DSA key

rpm -e gpg-pubkey-db42a60e

/etc/pki/rpm-gpg is the standard place for packages with repository configuration (like epel-release) to put keys they want to be imported. The yum configuration in the package will have the path to the key in the gpgkey directive. The first time you try to install a package from a repository yum prompts you to import the key.

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