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-redmine-12.1-squeeze-amd64-openstack.tar.gz.sig gpg: Signature made Tue Jun 4 16:06:14 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 906975a0d1cd16256068f97622786df6a9cbc647 * md5sum 666a5c8742ec217c1662d279f1b154fa 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) iQEcBAABAgAGBQJRrhBrAAoJEIXCXpWhbrlNUPgIANzX16TaLNgnVR1BSJZVox0O v6Yoo5orFK14evRsMPJiefHdkjdiLDaMlCtxTmBbLbLxJx98Qf2hn/6O01GGvuRq oH4mjmw23BYkYLzapO1Dq5bxBcu8TsURnHJiSSij8OTXx1Dnoo3dgLitokJuCIEl VqZ2n8Gzye03yGvJSeQ9Ax1qda6OddzDQxlQrHoZdFbHtiks/nWfGNFVLNmS7W3j H2u+jqxpjxNnZN9mFMn+DW/TKvRholJy2YLgM9p8nBF+rF7RcQOKAfPpwrgyNr8L YssqlMWYQz0SDpEfkdMnvUWHZ4ZEBavb+/y+88ZkE9Z4BNKSvsWeaoiLzXsybiE= =a6MT -----END PGP SIGNATURE-----