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-openphoto-13.0-wheezy-i386-vmdk.zip.sig gpg: Signature made Tue Oct 15 17:29:33 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum b4209bc82fa9719fba6a91535628d61a7732353e * md5sum 5d5cd26e2efdc1fee5d9c75687c55e3f 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) iQEcBAABAgAGBQJSXXtyAAoJEIXCXpWhbrlNWOAH/R0kqH734nAkV3AtyT8sKVAx S1kZHdGf3z6pi1/l+JAXaDGDOmHu/Bzhpkn0Y2/13j6oXOLX/kCCBLLd9+0JMPqs LcDxQ4JiHY9eNnMEWGNd4LwvMS9fmvCEZmZE4MX83GfqZCgNVPTjdfbnv7IsjW4S vKYwg4aIAvrGFFBXafkgXsyzqe5OOR4MriCYnxaHk1Y/0RekBF/7fNCzHlHuD4ZO PHBoLrsTwAbsj1ECbwuPYgGng6g7vcHoU4lAEVfaTKkV1Vpe/LOqcM/ihfzqaSEd z4uhZ5lop7+eFCXiu6gcsg1ssHP6Bo6m2x6QN0/F9PRZ36sgzuKrSV8NCCVqfJM= =0AA5 -----END PGP SIGNATURE-----