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-jenkins-12.1-squeeze-i386-openstack.tar.gz.sig gpg: Signature made Tue Jun 4 21:34:08 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 3066d82b118b4e8bb902c3d2e4209be8b52ae2c3 * md5sum ae0236c8bac23bc38b21231a3027a93a 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) iQEcBAABAgAGBQJRrl07AAoJEIXCXpWhbrlNH7cIAMiRaKJ8Slc07fh8u+QHpU98 okZr2SFDRbOOgUI8cdPjJ7i+khiapr30HlqQSIxKbb/Pn93jpWCFP9SJmMHHMTh8 R3OZXRHwhpg1XD2572nlEPlcwL85qYMvi6UOhqGMh+RJ/Bqm8UuBxaRfclozVS6G vjMtXOE0SRY2dnw9Lf+2WDI+Yn89yfkilhVe04ArLZsO0yRm1mBt+faR23zKATCv HQCpMl6jH5qAS2zT290gXWi8mSt5Lj+sqZOA5hgyTGWnqbM/J+fLuU4KBmtkHQOm /mSahfNpS7ztNQ8NoRWVdKJ8vRHQcSAND2YldXCuDO0WtcIctylaU7JSEKXymvw= =48xO -----END PGP SIGNATURE-----