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-punbb-12.1-squeeze-i386-ovf.zip.sig gpg: Signature made Tue Jun 4 23:40:36 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 2c7ecbdeddb63de4cecabf0a0aa89806f2aa2e4f * md5sum 48528f291a35dca0492182a8f8900fbe 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) iQEcBAABAgAGBQJRrnrmAAoJEIXCXpWhbrlNsCIIALvqSLouFORcOiwnHZRMsis5 HAKw76ous8mrjzkMLDFLnXdc69IZf1X7pM5JO/xNPkZwEglFsMVUucbQ4T9pNvBy MEqyK/pyvJUggf1LV897KDwWv/4rLvI8eTm+g8Gix/2JJ+Z/aUFYl24op5stODUc XPEQpoGjQbYaahqOp1PAHTMN/LUfYUqt8Qlq3VHHMV3MBz4f1sNsotQrlb0yDI1m U0OEpOtud5NdU/19+bJb4Cpk3VXP8INU497OlkM7htf+v80s7B7AG4lk9O55sESk gEthX9Z4g90VrePLRLGsYY1wZSqfH+rZipQTf4GW6uMLUuiOfz7aeRCNTkW+558= =zCuU -----END PGP SIGNATURE-----