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-projectpier-13.0-wheezy-amd64-ovf.zip.sig gpg: Signature made Wed Oct 16 09:52:29 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 674c62117b5d592b6fb48dab419235a102492862 * md5sum 93e5b7c096e2b4bb027dfa1b19272639 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) iQEcBAABAgAGBQJSXmHSAAoJEIXCXpWhbrlNA/YIAIGRedvSN2Ygkb5jbzyxyQQG qij2nvA5g9WccTEojUo7b3p7DEvY+9p7iOS8+1i4bsR+ojp3Ad9S0URoFQN91ILH WI+mQhSLUHsaxX7Rww2hMkNAQQG4gYw/2O50c7CbFKsCE5w0YWkcrTZUPAQ1ItfJ YDiNK0wb3ogiqra0T2kphqrSSJEeOekdWbwXd3FQDbdzHJC15JTU7CcP5UMFT0cs K2tHLsWEihJrey5xrx7hnHUN2fVR2MSnAlEBWsnA938nNmXtzr52K5T4i1W3Gm5p kor5oNLp15S3u4kJJm1cjm3OYJWvnl1At1yf9eH4GBHUDQD3QIA97uRgPdAkNAc= =8ALC -----END PGP SIGNATURE-----