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-openldap-13.0-wheezy-i386-vmdk.zip.sig gpg: Signature made Tue Oct 15 17:18:43 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 0e48093bce58172a7e245274d471e244978e3c0f * md5sum 6b1a222b1b6fa41e5981f273df05e6ed 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) iQEcBAABAgAGBQJSXXjsAAoJEIXCXpWhbrlNVLAIAK/uHt5paBsEQ+Oi5nhIR974 srul5veglnIrZ1U3P1OuvYlnFy1oWi6FE4WoRXaQ7m5xLGezXb/4/LyZwtzjTQup 3m6lYvGer9WS4IAIrtUlionUyC46UZMtGRbpqGVFgpjUVOMY68aAVEwWy4fbkujk yp/H2AVN7tDb+S9AAM8C08i4i7+aCR36Rr+aVsWT6RDOn2Md17FrAx91n7wEmXg+ cmReelsDZGBApRUDX+j29dY6ORUR+PtuOrlvuT9zG3PKuw+RleVlQg9Mb8vTz1qa HbDQuWTafAaqaqMWwqFzPEzqzRrEFUmZf4xT/5f40VdBUeATHW1yVBuWrJYaE/8= =noGG -----END PGP SIGNATURE-----