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-mysql-13.0-wheezy-i386-ovf.zip.sig gpg: Signature made Tue Oct 15 17:03:19 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 5f59296d1f4ea59364027c89a00d5498b035db13 * md5sum 7c1eb7105889212a5fbbef46a11962a6 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) iQEcBAABAgAGBQJSXXVNAAoJEIXCXpWhbrlN6KUIAKxuMDwYZVRhS2B4ASAQ+Oxj 12agImF/nHqDkEe33q5hMW845ycXY/+dnUIkw0fgAP8VjuwB4t/8rI/6Kq+txQtY 4F2NRgSlMmKq4160+vRBPd2Moa2iEwBX2Xbfrk/Yct7SRwLBddHB/Y+9OnmClEV1 ahoK/CMEw1hDxADfR7YSMfO7P2nC9ZVRDIBsCD+6eBpv6M1UOePtLqZCnJOmauEH tLwPoWp8a2fUffGQ1lWz52PprR8ZBZvU6UYIIKqdCBslCp6aGFMiYDEsm+QXslOm 5bGnaoZmpyEK/MM2TRjR7i0sYSqakO0sb2G6parfjwnNzdGKjYGwoY0pNUS/snY= =N4nA -----END PGP SIGNATURE-----