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-tkldev-13.0-wheezy-amd64-ovf.zip.sig gpg: Signature made Wed Oct 16 10:15:08 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum f93fc9581ce555346e6ab0b2cf55e3e298ad6148 * md5sum 80f3fab7c3fe6e7bcf87e0b783428d2a 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) iQEcBAABAgAGBQJSXmcjAAoJEIXCXpWhbrlN0gQH/3TVtQKVI4wEizK1wuanpdwX Y+GKAD7qoPbErsghd0E3CTzEkvFxhJb4U5Kjtn41IDKSvdNNyc91uHIgEZocyQ0z lVryAqbN98NkEi4Yfb6qEFQoQ12Ao8n5lXOpC8sXGscStJOg7Lk7wBbwBTQGJ0Vo IeVvjsMq0sa/3mMw13HskDqaENuMTA4lGsKlj32Q2VGC/5l0+ZZbL+xjKACAbolm WZYWeLdwCk5NiywQ9duGBvK28HvntaLJeh4kliqGrggrQgCQXRC5RBP5JaJ8YXod uv3kI53wuYf8x3JwGs0PGFou2p/MNREJyO0ZQ0vWW/2G3qzdcbQ0aVf5+OT4nKs= =7C4c -----END PGP SIGNATURE-----