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-appengine-go_13.0-1_i386.tar.gz.sig gpg: Signature made Tue Oct 15 14:55:04 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 8373a15a0717ccf722ba7a86ae26dcc41afa173d * md5sum 60023053c8021a6b27a3ad1f4e22fad6 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) iQEcBAABAgAGBQJSXVdCAAoJEIXCXpWhbrlNRcMH/i0XTuBCvCI97eShtnv2F/Ep F4JTieRJSFFY7gWgiicYIAHnRqfMeTpycINRQwxc7gy8544rELzSkm8gQoKvOQcL 1Tn20BZvDKrEUt80q1goFopdzuBQOvD4zcW+6jkpCPRaDGQTKFBBl7cvSuqNXv7a fesi82M/Xwyl9Yn7Rhj4/tCGyt98qOq61EBI1kp6lZ4kaTcHs7FqwN6VGWXpyO/R u/+RNSY7qMQiBYnQaU4nnNZa64swZVdcXAWN/B0KjxAIHOu4W5EeWlP0YTa4T3up FRtohuQQjMeOgU82H4ge7AEHCur/lTnDtXrncukHGM7b4Z3hXLAjsiTznC5yvHE= =aqbe -----END PGP SIGNATURE-----