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 debian-7-turnkey-core_13.0-1_i386.ova.sig gpg: Signature made Tue Oct 15 14:12:57 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 657fe053c6cd58bc6e5a3f149bd31efb29acaf13 * md5sum 10dbcdb9cff0f7f76d4052a14d29c85a 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) iQEcBAABAgAGBQJSXU1kAAoJEIXCXpWhbrlNtAIIAL1R7mOrkEQTPIGwYHC6QS/a pyMN+yv+vfPF2r4AxKNxLlKol9qXUZ4zk5DweWxk5sIpvghNWQc/sNIuTBQUWFYY tHFVPoHQk/nE9li7uU5DLXxjyEqPj3zyjkdvuzXKutgeLRXwjk3bE3BeyL7q5Tdo 1+cwGlE3XJjuy/UdI3Dt+fNJOXX7OT+1NTqdIOHypwHB7IcVkAYupGCTG1/Bg3ry zW2422klsP8/wpoomGqttDWrPfVgKQHwEQe4fbl9/03491NfD2mBAxZe3q+OJYbh HSi+ShIeiS+QEOZ7MaS2x4QXujLPaL5eI5tbq2y7YqEdIeiR3lk/YhdGhMJzWUk= =OQmj -----END PGP SIGNATURE-----