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-orangehrm-12.1-squeeze-amd64-ovf.zip.sig gpg: Signature made Tue Jun 4 14:47:39 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum e69c9a7b4faa9bf6ce9c5d75ae43acd6676ad794 * md5sum 95648fcaeecb455227729ff4ebe2c070 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) iQEcBAABAgAGBQJRrf4BAAoJEIXCXpWhbrlNX3wIANJvtHmmQA+BET17EawFK/VC 3BHc9hQwzXuQdTUDIj+DT57iY/wVoybdPcXH8Dw7Pq+WDCS4ywECJhBRIaFnENQM CLH0QIxh+A5jjDPBXejpQse9XfVH5dakuG9hoceQbWuhHGiKor87nRzCpzqIFFCh P71C7+/Vyfe04xXaVSrBikmpRAU1LwSoqRRLrIqCeWVfqRjC2V7K3LoZWdKxxMCu 6QjAjDnoRaUVI9wr3ioZcL7jkEevPe11d4Njb2+PjuRypsco3W31n9i/9vQiVCcx ADWeGvqx/dji/ZLGu+7sEUGb76ievXpSq3isCL+4AIGAuNc6Y+HSJXcVqWbRFAk= =6l+B -----END PGP SIGNATURE-----