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-joomla25-12.1-squeeze-amd64-ovf.zip.sig gpg: Signature made Tue Jun 4 13:41:20 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum cd63ca8a8ddb72cb900c66efd226a22eeea5b60e * md5sum f6878add5bae7028766950d300f4f500 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) iQEcBAABAgAGBQJRre52AAoJEIXCXpWhbrlNZaIH/3zJA5PihG2hqbUGCsoGQ2Jf x45d7fR1jwYSjaf2Q/eytld7xlI1c8ohmkclE29UH23kuKDjzdwGyLcnx4PVzOv5 F50uhHcgD4mIgT+7lrVb4jO4yNTdbn1OCynmnBCMwOCC6OSQRuir4fYDEvD9fVic H/J9R1vNh5CNdVKt8srFPaHBrHD9tRgHR/3SRYK/lqh4k2q8YFPzjR8e5IMnh/aS F/r3JrqxfR7fdo3rC2vdRvrotVwdwbbleNPOVMZiDpRGGD0p9ez0LIFPFLM7jDmM yoOdy04F18JfsfnBXs4SqfibtBDzP91KaJ/HoOBKIJ6t1Hhx+pgVEFyW0t3vA3w= =4HNJ -----END PGP SIGNATURE-----