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-appflower-12.1-squeeze-amd64-vmdk.zip.sig gpg: Signature made Tue Jun 4 12:23:18 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum eddd0a5232a02e6e77a6a662f59ad8099bd8363c * md5sum 36512b9db05fef3bbb20f4a716af47df 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) iQEcBAABAgAGBQJRrdwtAAoJEIXCXpWhbrlNxMwIALoJPubLQjnkT5eLi2i0mDyJ YVNKQ0O3zRYuhQuP0eg6AV7wjLF6ERO8n79vBc63eepxpXveFXYiUjO9ENf8CXnC 8YELmKUMz2qu6Ja40UJNuReaegHLa27FPk1x0cyf+uAXezdZj3HYci2vrJBk2iV6 YHujGizECe1Y0hIuUq0twI9xNR/xEvSRmALF/LdYsb5AjyzuBO0o9A1uxGiJnHZM zCsU7akEKDJnvJQIOSepa/ZidFAd212ykKoKppfp4KjnYDyRAVXbJVpTR1TH3Bpf MnsWyFJHmLPPKHHmHk2W9Umej/lFr+oa6DxRcML6oeCon47MWMfU68heXzUc2ag= =p3BX -----END PGP SIGNATURE-----