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-orangehrm-13.0-wheezy-i386-openstack.tar.gz.sig gpg: Signature made Tue Oct 15 17:42:57 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 6af5fa1055787b63dc3cd0981ef09dc9d668e30f * md5sum df4051dfb9f74ee2daa8b9da94253751 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) iQEcBAABAgAGBQJSXX6ZAAoJEIXCXpWhbrlNRnQIAKANInLnm1PXJdyL/+jhaSn0 jo6cuEmFnSrljmZKphC3kz6cN1dSe9EdstyAqQuJ8ieRHlCoGlDPHt3YIC8TaWyN SDlhUzciB7x5/v4S5hnDN9veUCCJGp/yRYgEr9En8S5o9885CGgKeiRgM88QtoZg mnasG2KctNn0GXFk2R5DuLU+IP3iFUhkun3jBy6rtVUlMeiOuTDZkWBk8iZi6yl6 qB0QXu8zdO2C1sAgvXQXrxh6r3edJOT7mCMhQLQBhRVtOLzPlzlk3TPaSnFaTXx1 FN/63sD5j2c2Kvn2l+z6fJiRjLhwcHq94BlZnClICpRuvT7n6ScGyZNJQ/YK2H0= =EKSM -----END PGP SIGNATURE-----