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-nodejs-12.0-squeeze-x86-vmdk.zip.sig gpg: Signature made Tue Aug 21 12:01:56 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum f4b3f0a28f5c5d349c6e44cb960b5d6b65f51fbb * md5sum 0be7417721f51e45f189766d1b296f65 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) iQEcBAABAgAGBQJQM3iqAAoJEIXCXpWhbrlNOZUIAOThCXSuX4OGp6NMjHg0dH/o y0LEfdXtVGZLToOkHBotLSXJ9PY4hrRyj9ODdNDRdHxKRzuUpGQKC5W8WyrR/g+F iHrhBO6vm+o9+2BRwjlLNoh986/1aNYCJflqrh1iTX9MOce93fkxNEyp1BXDYqpt qdzlDS0jhYUYJo4TxYB8FKacAow67k30aOzKJJtPlcwOF06BZl/JbRBQV9gl19YU jQYL2nMEeGQ6eM/d8aMIlKk0SJe/VKjrnLa6K5BYnwiJ/pYeyPsb7JMTIKfIBkFi j2arwC7ziCrmx/kmtQGFG4ahn09H8uUWWPnonCfGNDHhEEfhBfqR7i3CajJJYNg= =S4T+ -----END PGP SIGNATURE-----