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-nginx-php-fastcgi-13.0-wheezy-i386.iso.sig gpg: Signature made Mon Oct 14 18:14:33 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 9252fb27d53d57b292ad0a73e6d5ad051c483449 * md5sum 44af2f643d3fdac9f0c4a67015d296d4 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) iQEcBAABAgAGBQJSXDR/AAoJEIXCXpWhbrlNSCkIALJEde4TRYFpbUFGR2bMNftQ Y0Lh53Fq4iBLkM4MIyBdsKe7iJpqDc6PMTryoyI2fHAthsPouVfrn2F3E5H2Qka+ t1f+wjuTxgE7sQfvXgdoIffZd44EIElvp8k8Vboli/QwQvzZ97nRh+p3oAYHRjSo biOyEoEnMIdtZLY7/zmGqdT1vadWbRpo9tirdZifE+LNrpJuFLZWQ5e5Nudkk6M7 sih1vFr8p2fmLarA6ifqceBfNJoyJrKRvJqEjI4bu4FjQA7ksBvq6g2mpsqf5pQ+ v1beNsxwRzowYye10C/kObdlXK920zeVarhmKglwsEJhNs/TB9hgA0AD7Rd0l3o= =KJYj -----END PGP SIGNATURE-----