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 debian-7-turnkey-typo3_13.0-1_i386.tar.gz.sig gpg: Signature made Tue Oct 15 19:57:06 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 4c4ba0a777648b356473258af82c534b17a68a43 * md5sum 3e9239b94bc6e6e3bb864b32e3adffd4 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) iQEcBAABAgAGBQJSXZ4IAAoJEIXCXpWhbrlNe2AIANchAV7GfquL58bNeiCbMJg7 QAcBv4csdsZ6++M3FZnExTHjTeriUt7v449q9DWu6wlPVsrvYIVfug02UeMlxNwc gyRVZpTvy+YxcvUHOwfFOwkfDAtWmsfsd0JT29rip3tDnNyQpsowgwPcqzJ+aeJt iMhR6Nv8uw8Hv7gpBLtRrEqj7i/+yOP5gw0Spv4WswmNNHmeUiUmUAZD7B+GmYJ1 t2v5yhmCfWbUvxFh3bGQWLka07Kp00zlwoYqiPfSYuL/eCzdkJw7+wfJcoVMpHRY jWlvrrz63tU/bpMOcBZuh/EIZyprHBEziGjChuvjsPhxGbhAmq56sSCqd1g17Jk= =9Q3p -----END PGP SIGNATURE-----