PGP Information

The CUPS.org team uses PGP to sign all of our software releases. You can verify the authenticity of the software you download using the PGP public key below. You can also use the public key to encrypt sensitive emails to the CUPS.org security team.

Obtaining PGP

You can obtain a commercial or free trial version of PGP Desktop from PGP Corporation. Additionally, GnuPG is widely available on Linux and macOS. The CUPS.org PGP public key can be found below.

Reporting Security Issues

Send PGP-encrypted email to security@apple.com. The CUPS.org PGP public key can be found below.

Verifying Software Releases

You can verify a CUPS.org software release using the gpg --verify command. For example, to verify the cups-1.7.0-source.tar.gz release, download both the release and PGP signature files and then run:

gpg --verify cups-1.7.0-source.tar.gz.sig cups-1.7.0-source.tar.gz

Current CUPS.org PGP Key

Our current PGP key is listed below and is valid until December 19, 2021. The CUPS.org PGP key has an operational life span of four years. When we generate a new key, it will be available from this web page. Expired PGP keys will be archived to facilitate the validation of previously-signed messages.

Key ID: 0x35DA97EB
Key Type: RSA
Expires: 2021-12-19
Key Size: 4096/4096
Fingerprint: 45D0 8394 6E30 3528 2B3C CA9A F434 1042 35DA 97EB
UserID: CUPS.org
-----BEGIN PGP PUBLIC KEY BLOCK-----
Comment: GPGTools - https://gpgtools.org

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=padA
-----END PGP PUBLIC KEY BLOCK-----

Previous CUPS.org PGP Key

Our previous PGP key is listed below and was valid until December 18, 2017.

Key ID: 0xDBA3A7AB08D76223
Key Type: RSA
Expires: 2017-12-18
Key Size: 4096/4096
Fingerprint: 3737 FD0D 0E63 B301 7244 0D2D DBA3 A7AB 08D7 6223
UserID: CUPS.org
-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG/MacGPG2 v2.0.22 (Darwin)
Comment: GPGTools - https://gpgtools.org

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=IQid
-----END PGP PUBLIC KEY BLOCK-----