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-revision-control-13.0-wheezy-i386-vmdk.zip.sig gpg: Signature made Tue Oct 15 18:29:48 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 201728bbcda1df3bb6d69fbc318c96117ef670cc * md5sum bceb8b1fb6aa3474be39f67c3d2df597 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) iQEcBAABAgAGBQJSXYmSAAoJEIXCXpWhbrlNKBwIAOEZDcwCLDRHym55VmNMSeg/ Y1GfGzX3af8+4/vVl+RO7Y6lrRVP3JdRGTq7am20qixHTRmzeuEnM2GwYvi/B3+r 28pV+XG75B2upioSL3kx6r21SVX3HE1llgud2GzIHVcZD1rSBKgkqY5bhnKCN2FP dtb7tGt+CdgkunLwvxHHsrqQSYs2BTRGXfHFikRMkUrjz6ef4rqJHNCkwSiVe1NZ j5gTas/OWQApr+6FElxfKHh1ZPnkVzxZ0SP5uXQzoGsLy7emEQRxkO5k9CvgqCV+ O4Dqpcn680m/RamVUWWs9eDAVWTBZXm8mPXhFDWgqOi7ksI3kyY4yxLBHQoTdaQ= =tR5I -----END PGP SIGNATURE-----