This signature file may be used to cryptographically verify file integrity, like this:: $ gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys 0xA16EB94D $ gpg --list-keys 0xA16EB94D pub 2048R/A16EB94D 2008-08-15 [expires: 2023-08-12] uid Turnkey Linux Release Key $ gpg --verify turnkey-gitlab-12.1-squeeze-i386-openstack.tar.gz.sig gpg: Signature made Tue Jun 4 21:33:42 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 55d03136f5d1308a72cb6479eb6f0a24d0ab4fc6 * md5sum 8c255cfc94940c7cf4d8bf4f89c0bce6 You can calculate these on your end and compare to check for errors, but cryptographic verification is recommended for security reasons. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iQEcBAABAgAGBQJRrl0gAAoJEIXCXpWhbrlNXL4H/jlbJdsjDOAngOIoULnHZlpG q6sY0UvptjPUHp9TuUUea8VUp7pTs2V3ajxWM5DK38ddFur/2LrUC3yxF6ymkMRT R2HQbt4R5nxqgc6sBIqrqf/MvtfUqpKCy54uyVmDI95BxIDetYV2VIXxeu0mJUtF HcD1SZo6Bv4CWu+cAZalx1PT3NHip9xiSMGhPiH723hWK6oAnMfUJfmTh/a51xHU WTNRJXvfn9zgj5d/mVoEdoJqxmlc6s2AfbAgMPVyoONHi+qdGnRsJjnlDDeuvWlT YjPbH1tdK1zoO9ZoTh+1Ju7KQohlIsy1z1RUDPTApKJl54tCRTjkzoarRo7gHA0= =T7dX -----END PGP SIGNATURE-----