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-phpnuke-12.0-squeeze-x86-ovf.zip.sig gpg: Signature made Tue Aug 21 12:13:23 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 2e3697e44087f3ddb256080dcc1864b493b0633f * md5sum 73b5301a4c9e74125e3183b76bf21f54 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) iQEcBAABAgAGBQJQM3tWAAoJEIXCXpWhbrlN6DkIANFlUC3IYzfoIqinEupneAwI IsFNSWOnWgU/OYETXMfjD6XZn3kswmmt2mZ7YNd5fS6ONJn1tWOAd8DQ4TGi4zCr S6QZaFiYVxjKzto+IafrH2TVHLWIaTouWfc5uOa2hmjX+VGIgekUL1zi8Nk+8XGq TA9lt95A2+u99Zc6P5llDfIkObRyMnRBJMnYZh3p63X6/O7/0nHVAkisik1zDqkh vRs2CRNPdPWRp5D+ABr6d/pFMWAgxa+beqUpHKZWN7wCSA4yefK4YPmkeq6hLVc3 ST307OOsWcC9l2gaTw4GvR9IPgg+1+pJv957lGM8T/sUWsxr+NuIN6PcEhHNl+M= =txz6 -----END PGP SIGNATURE-----