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-mahara-12.1-squeeze-i386.iso.sig gpg: Signature made Thu Apr 18 13:06:57 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 7e41299bc6e44ceb0b84cbc7e3a2a280a1d94343 * md5sum 825fe84ed03186a621aa1eff05957652 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) iQEcBAABAgAGBQJRb+/oAAoJEIXCXpWhbrlN8OwH/iJAJOxvlOW83f4PFmKGPam8 CHUtJc2MG07wOckyglcQ5ACdDo5EH1lgpRrhntZb829zqd0kxLSYrIil7uSz39Tw IMVz04+l1CCNqFt6spD/rLaRvx04NqH0ScfHqJO9EGA2oBo2RIDIPnxx1wy9tg2h mXqiQi1ciRMN0pM1HXuflZMTxgAhnNw1Eby8Q20uLPsQyCwFjIvbsd4uMXJkPF3/ Aw4DEScYCQpcqwd6Mo4YsG7U8tMfVdSOVfbYpOi9TrvxfbwK7WHKqcdOPULnxIDB 06UxPTfXCZApdDvTMbVL+ZaZg13ijgj2PcRGwC41FpElWOOpL8o+XK7lAbiV/Qk= =d77i -----END PGP SIGNATURE-----