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-openphoto-12.1-squeeze-i386-vmdk.zip.sig gpg: Signature made Tue Jun 4 22:34:14 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 34dfb24ce117e271d7a695d8df31954c9f7cd29e * md5sum f18ed375e94f3aad58fced2256c401ce 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) iQEcBAABAgAGBQJRrmtWAAoJEIXCXpWhbrlNeXMH/A2nPU2/L7BBER0Ql+jHag1V eo3kP88cegYrlLnmXjGDFWKRwik1Mr6tXtHZMIaknH1QLDT7F+jgVCLRplxtHCPh UHfez4u8RCeLKKNcKD05uKr3pkuPf3dRemm+/Fbbsysr9zcGJ+OCK5jqo0GABv/w bjCN1nWw1tsJsL76/wlE5hxEC1cEitPoTf2JNykSFmUr/Vo8nPUaPEAFQ0oy34K3 3gRwU1jYY55xQPUp6VgCrdqCQLqgx6W02ysjACzo8iA13cayj7fMKdkHYfFVpswP bsLHmidrmC8Z7RNSTXT9lhi6ojcmNr9U3KBdR/OUTi40bpkjhezamotGQnn+yec= =xdfL -----END PGP SIGNATURE-----