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-joomla25-13.0-wheezy-amd64-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 09:04:16 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 2e48adc4492cbb0d2770a000adbab52271ecbee4 * md5sum 6d51fb1f331edeb8eec354ad3ca30b58 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 v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJSc26KAAoJEIXCXpWhbrlNqScH/3ArQKhM7KFRtBo2HElSEAOT E5mSaTquAaYWWi6i8ANOXArDuiywVcZp5ZdxkPDpOCwx2WldQ0HgImhZb5URVjD7 xZ1s9R3o4ZYhM3sE4ufHCHFgv+PlTPo0qXc7F2uBFCMqH98HiccvaewwTSm5lnFO 7b1IZqeUVqT3+oCmzjuhRVpXAWprRBPdGRuwH1oNpz9ulSJNN2G4HlBRK9DxnpEW QF2XTQkxzMdh2EWmSxbSFYf32lDAWo27/uRQrLicwxeUWcX+JT6W8oMKnW747bBv uwdH447Se60nemuh3q2kkugugur4uTDnnbiC7/1m6FW+WLU6NsdtSrN7/8El9Zk= =yS78 -----END PGP SIGNATURE-----