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-asp-net-apache-12.1-squeeze-amd64-vmdk.zip.sig gpg: Signature made Tue Jun 4 12:23:13 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum e9dd6ea45559efce757633e69734ce9744cf6243 * md5sum b10314a2878bdd4cf7da9e1610682878 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) iQEcBAABAgAGBQJRrdwnAAoJEIXCXpWhbrlNDz4H/3FRZPZY5lt8t0G9LNagM4bv swMNdAQ/DmI7oBNg5Zpk8ElBq5LJZ9yZJDO+C0yGMKcBcD8sXAu9EK89+LwI96Kk RuYZB1Yp2kqxAzBYaKwSls/EfXrKcYU08RbOI91zgf+gkzWtF+lOatVNvM7j1ovd 8k5MAIhHwbKDrToj5X5UQtBBH9XbRi9ggn83625cv9YZFGCeWRjAcx69yvJY3squ Oe+focrqonzUIeY5ifIZy8O3jOkh/txARy33qsGu2zChq4BIL365b3+E1bdKV59Y aDKaFpqHFPeqhjFjqGy3GuWhWvXlaERiGeZ54YX2XQ5KsTZt2ZncVjQjWR6ry0g= =Pqz8 -----END PGP SIGNATURE-----