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-torrentserver-13.0-wheezy-i386-vmdk.zip.sig gpg: Signature made Tue Oct 15 20:01:11 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum b65f0fe301922cd1a1ae124cbf49e935a853897b * md5sum b8c4b3b391df478eb9a2bc1d437d7b2e 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) iQEcBAABAgAGBQJSXZ79AAoJEIXCXpWhbrlNR8UIAOIFtgTwyCdDjANeT7VEbxhp 7x6oTTb3WPQMlhoLRHme4laGjxDTi7gKpHFdrUiL3qfMy+K8hrbwLnjqFDKs4ajP DPwcHKC55pi56s6Pq/0vTRzwdm9ZsZFxm1I3rvSvuqye4jRpWG0S2Ep19DQ2G8za AN3Fmp+Uf30DghF1aym5tiqB7eLIbfGcOnM/GT1rTlfEFCOL4rByqnZ3Ywt4d2Yi TcqloNld1dSt4fikhhoyn5iVMNDpiVbu3bRynLeQch3uJUgMgZwbkftZr2hHWHXl HoLWRAKvXRO2L7htgyIynuiMZp+Ob9SuKLZC3xsiXERMrY9UgtXM5Nf4MQ9iiiM= =GDfQ -----END PGP SIGNATURE-----