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-tomatocart-12.1-squeeze-i386-ovf.zip.sig gpg: Signature made Wed Jun 5 00:29:18 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 5b915e12b040de90841fece8bd1dc3acf0a0ff08 * md5sum b72338105d95103ff8cbde8f9cf4aca9 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) iQEcBAABAgAGBQJRroZQAAoJEIXCXpWhbrlNmosIAMmiRvKewY/0qdjO4R7DvpI1 lXCrL/Vs0XU094PTqvIYz+wju0QTSM0vlxEnxqK9ZKHx1YaY62yvS2AIIBLdodGc 8rmVMR/dmKF2KGnGsqeOSDm0rIHkSCNuedNWNOw5VBhBzIteBmvwEJkWIk+iZbtm NogmOOEBG1tCXe0n3NEEUvhCAGORhe7weq/AHnVd7cDgxSxpSj87/RrM1SNB4lex YKPhDuMNWj8vEqE36deANKaLoNPISCQAP5ffJ2CkpuBbI96zHLYJZ/ma3GFiKyAg sJog3DI4KlsQTK+FRTYB+bG8MIAmY46FU3CH2FaLt1aMv9pVZD25vJn206o/n3g= =mwFk -----END PGP SIGNATURE-----