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_amd64.tar.gz.sig gpg: Signature made Wed Oct 16 08:16:12 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum f85bc7bc9e5cc0f15632deeb91eedde82ed9c893 * md5sum fe327fa313dc399a281d1ad8a548ae3a 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) iQEcBAABAgAGBQJSXktHAAoJEIXCXpWhbrlN620IAK0zzvMYTQ4mQ/+AgCShzvFO MBioTDrr7w6CuD3FNQkJ5CjiB2bYUl3pj8aRXiFEpaWE1ysKybLsOa850eNB6Qq7 atTmCa54cqAQmVkR43s81fY0weWVxYNL9vz/lFZrUlSlKmdyrwX7+xyrLItJeg/P H5S1Q92cMgSEQ5yUUT5+s9qHkL8h9Hu90NSJsKgzHOQfQ+S/NeAwcgFf23XD8Te7 HNrUG9Lfv5YGp6KttaVtYITPnIPNLvZUBWYEay2cJ4CR13d4y85guH6VL/g0enCj r8CJhJfJp8BeZ/4wH4Qp01b0bp8CpkoQUI7POu0VYE5WkipBSXu/qJKSC0WfRsU= =frbB -----END PGP SIGNATURE-----