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-piwik-13.0-wheezy-amd64-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 09:25:48 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum dd0cb370cf91fa0bb7c365bf5e4b3e6119bd3a1c * md5sum 018cda51eb385e7e3ae997400f2698a1 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) iQEcBAABAgAGBQJSc3OWAAoJEIXCXpWhbrlN+xYH/jzNmesPjmZreEzS683Gew+K ofRllVP4F1H66aBFCKGyW2ESNVE6L6JcgJJWvDuFGOUdSGCE83jeIkiti1DEnOF0 c4TduO8+f67qWe8lenJuBc1JPjmEtKlLgOiLwxyI0YIj/XkQYAPXgnfMaCDUznaM wbF3+41McM253HrtCNDvyH/RAvHVAshV7w4Xnq1Sy+k5DwLzioEQ6D4kMDAygGGh l8Jz5y944stA4IhZ4t2TPmPHzqv+ogyEmQhTD8FW0Y/0jbMm4woTZG28dwjRHW4m FxMnB4lJWKBBzG5o5F9ADV6wtWznb4dVPVQDaQ2wcgLHFDqLRdx/iWWIod04Dak= =x+5/ -----END PGP SIGNATURE-----