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-magento-12.0-squeeze-x86-ovf.zip.sig gpg: Signature made Tue Aug 21 11:52:36 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum f5198619602e02a507b9938e8b291495229ad75f * md5sum 3933d4cdf08e3f9064e5b7156ec0bb7b 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) iQEcBAABAgAGBQJQM3Z3AAoJEIXCXpWhbrlNhUwIALIOFT570CbuO4dlOi4n0cBq UBeDyIBkMXOt6kgRU27mM+5cwLIh+q+q5SIucYgXs5Yh2CNjIYPkQWhfsIy7WhxE kU+lCWebfkcg4GZo6+1yAF/Tybqy89tPOcXr10Ymxji0FH1ftkszwnmheNz8FrjE ZdRQTP/6L7Obn2C01/G4ioLR3S9rnXOkCvDzek+Yc9/xxYVgTtMWnx4b47fuJrVI O7wy0057pPr1hXVbD1ZUCsFd0S6Mm+/UEsR16hecR/fC9o9Zge2WCmieaR8ApAzK StxNLXGx/CaVNiTtSEybwAz2TntGpxz99wpPGPllWfnK0E340N8ViIGSRh3EbNc= =QJJf -----END PGP SIGNATURE-----