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-oscommerce-12.0-squeeze-x86-vmdk.zip.sig gpg: Signature made Tue Aug 21 12:08:13 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 1456b340372425ef99b649785f0069799fb5de3f * md5sum ae046e6fdd0156ac8fc4814628aa5ef1 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) iQEcBAABAgAGBQJQM3oiAAoJEIXCXpWhbrlNx88H/2D9WczdziUZrFbjVcB2T+4E vclLOMTS1qmsvUP0pZmJRYeEsUCy0DSohcaoK+0xNf7f50Ad9b++WHvawIsj6xkI 0yJPVzOwE3iPyjxS3Yf1ea20Ljc9svZs39m0fsvkjIskqYRAspjgcEqPiYAuOlb8 leBg/hO1FYRmEmDwEXg4EUrPuNsiYTSSJ5d0jaNx6Q3GDcLUm3NY28jAuKyrz4H+ VwjVzi9pmQZRV13WfyTpb6wbj9VhOONl4gNv0KjNYOwYYcS6OannRxEGFFoQGQyL xhzyVzR8guOdyVmNby4K0TcS1WgAvRANUXnk+cr4tdgVe0x+pGBXViK0ZsTsKCA= =lLQQ -----END PGP SIGNATURE-----