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-zurmo-13.0-wheezy-amd64-ovf.zip.sig gpg: Signature made Wed Oct 16 10:45:51 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 30d90dd421a71d2c6b5bfba461832b2bf61e1c04 * md5sum 122fc7f4014b1741dbe462f333e4462c 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) iQEcBAABAgAGBQJSXm5VAAoJEIXCXpWhbrlNbzEH/1MZ3zV8G9/UIN1ArndJxJFA 0IEZpkiRex54PmlIYXvFw4jyMHUtJM2XVVtR+COvAt2BH/6mC8ZsnGx1hngQr2L0 jdM2dgUdz4vCdwfdGIZ5d2qjzJczhuMbOD9wvH4GFi6x7R3faEaejbkzuDEgeS3+ 77k8mB1hoojPl8OZW9P5VlSaQe4RffZgAkCiEFO72SMl8ZOThXSI07XsnRuYPh/i 1y5Yh1ALjPDVbnsBumckIgRjFGFLLnipcBNdPByyWyVwfY5VTaPc3XcuU1JZZmdS MQmcB0/uniM+Zh63esgaaFMmWHVFld1EYkLDar4XABOhujJY0UK/8Bpnb9wXOF8= =TO8j -----END PGP SIGNATURE-----