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-mongodb-12.0-squeeze-x86.iso.sig gpg: Signature made Sat Aug 18 17:27:06 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 52cd98debb050e7effca1eb5bc065a6260f4274c * md5sum 0176aed6a0fdcf3e87657f2a128e1ceb 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) iQEcBAABAgAGBQJQL9BhAAoJEIXCXpWhbrlNkwUIAOCXOLJl/UDXs22bhL7XV46b JtujQyuu43ompv2QCLmoxG/TNVn+KpIK7wr57WQnx2w3pAmE6JTYZhEMpwkHIQZK MZUZY12jBxSadOd9B0BU/d7lHRh4hrGX2w8UlTSLRmkUiQZyFYz8d8bPDaG56WPA rZqmT59Aw+TZwhKd5A0S/QxhIpe9H0Oa5414CWMvTOUc3tWz6wzW4p4NrXQOYzv/ IhIXPUj5nJ9YSRlb8r7jAKgu56tFwVYbCCG4214Ub1XPxDqXT302742v33h9LhBb kDtY9iJEREkDAKjot8o8lFUhn+GHdNQD+h/zsZv225EKY4pw00kq7ve6N9UOcwA= =nOmy -----END PGP SIGNATURE-----