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-cakephp-13.0-wheezy-i386-openstack.tar.gz.sig gpg: Signature made Tue Oct 15 15:06:16 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum f9ceef7cf3cfe827d93b3d899aea3dd492781d71 * md5sum bdb361683b01042bcd9f6fa905f975fb 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) iQEcBAABAgAGBQJSXVnfAAoJEIXCXpWhbrlNtnAH/13JZRPtzuhdvrqLjbXn08S5 Uv/Lj4l/ChkjN1s7TDL/s/ITkKsoxo41vCKKgE7z3I1Qb5ZAAoCc7gevKtmZ+ETU BnUgDzhJKn34MDOH/RFOOFk65Bd21C8/f5gXJVsozjU5arN+MG6q6H4Z9UqxVGFm k1cGoR9qqeHvqKnA2NqJhO0q7qZGSDKH4jt1jyeBTzG1zbzccxc33HJ18n10y0WV LMpQmfUWPOEBlE4Lb/dLetgQbRWerUg6jTycTBT75rtNTET0Ft/FaplXI/KUdcPO pDq9PuccWfai112y9SRc772oUPtj4BT9SGj0qIBPvDIUlj9z8Rt4cnCiMAw1GMg= =Bp+N -----END PGP SIGNATURE-----