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-tomcat-13.0-wheezy-amd64-ovf.zip.sig gpg: Signature made Wed Oct 16 10:26:23 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 61abf706ec0148a25dea220fcc0ae7bb1e3a740c * md5sum 708b097e88b68f60ef377ad0eb2482c1 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) iQEcBAABAgAGBQJSXmnDAAoJEIXCXpWhbrlNMrsIAOTR/qGSjM2vAklh3I7i5aKv QJFhlNcVQhtEgJzq7GdtzKlsBoK8Q85XQaCj/XFdCEbPNX4RJZ0CODJpgEq1tn9V R4S02m4OGweoAe343rxH+v5+udsWuBWj6wEPKd92uN6ZDG+5e2mTIm+evN7lNRYc fdq3VBhOoOu60nkcplzJgJjyYWCreDfi4dCgibVRDbRa7Ii1r4VOENDWSaggErwG ZJGjuuFOvZTmBx7yk8RPFvLDRnG39nGaIYeh0+rckyZl7x9v03x6mx6ycUc90EzU 0dm3gJHqaa5zb1zzDDndTRVCEo8cGisUKyuqHd5ChET8dEZIR5kFmRE1vTkaQis= =L9x5 -----END PGP SIGNATURE-----