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-mysql-13.0-wheezy-amd64-openstack.tar.gz.sig gpg: Signature made Wed Oct 16 09:32:27 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 727e55cfc2377d61d37505b10b3c5cf1dc98129b * md5sum 9fc5586ff1cea64467b2fef1733a5116 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 v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJSXl0kAAoJEIXCXpWhbrlNk80H/R6TfvC0qZd5StkvR/sXNrZY myIS4jJCZEnZR/zqEuufjVyPaVJwevGutEdAmfNWJwf3izB8NBH8TlR/4+mY/JwK G9PStvJfhWawMirbAltLzfJSfJPZxm7pUhg6y4EenHOR133St6cgaaDnuuzW4Cm3 ng7JjmGCbKtISjbbo5sQNY5ZtYX1Tf5udxyJ7RTpX2uJbbEBe6v+t+yK7Z92Tak+ VQCnogB1+FKkSYacXQSUC1ogsnAtPAEEl82DLu2weLeWRXmhaabU1WV5Zm5kXmq4 NdSVcN2q70HvwGV3x2LXevQnyVRphON3dAcLqVSnQ4QBal9zoY+f6TdgGztMvjc= =wWCd -----END PGP SIGNATURE-----