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-moinmoin-12.0-squeeze-x86-ovf.zip.sig gpg: Signature made Tue Aug 21 11:57:39 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 99a789b6e1759b10419a0d07422b9ff6685f299d * md5sum 56b48aff372c0d553cd72705df69adc2 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) iQEcBAABAgAGBQJQM3eoAAoJEIXCXpWhbrlN+KEH/iwQmyWlFVql+EdyekxgMlfc h3ucn36Spa7kJX38aTwrXOtv2LbSSWBT2dFizv7snNOpLU+s8LRPr2YSYQ/lfPXb +Oqvbb36xX2kgGCfoCK3uELLZTHomxE737azp74Bp1YVn/g30zimQptksKzPPrXY NVPLsXnLnc26bwt0VVU5V9lBtPekDzH+0KwfgVoLdj7kxdArhRaeQIaCfxk5c2vz 2urJIT9S5dcjGF6LnjRdvfImTyEZZkm6c4g6CNzsSwgLpWQJhTRgXdfPcVkjXK4I k6wUesrieWSnRQiurZkGEi6zRM98HTUATD8bO0hRe2OMrUViRF8huwbPptDihNA= =gcj9 -----END PGP SIGNATURE-----