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-lamp-12.0-squeeze-x86-vmdk.zip.sig gpg: Signature made Tue Aug 21 11:05:17 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum c7502f0b0aa8cc07c243231787fa4086fbeccdc4 * md5sum 3f4cf5860601c6d4e777b3fe9e3e57d5 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) iQEcBAABAgAGBQJQM2tiAAoJEIXCXpWhbrlNh2cH/313/+XShNgHH38UDGsG0bzw eGcEDgh2FXKzwO9Qo2Iw+ENGslpbvtbzqY2a+XeYNDGeQ/xRGCE74EoRfYVvJE7P 25IDmhx4/WddiW0U3H6UNsJb4qaOJnooqPmIhT97Y4BJVbhZIc7RnG4ViIKD6rMI IbUZaqvDvKR9hJc74DEo3vuAa+ZCHuSBkRDyGlai3w0CzmoQ9ZjTDyBGJNiI1ioD y0Mgr/uJtnGsMkN/cmacYQ1qn3Oj2xMldNAqa8vXD5vQYy+Ap9IxzbpVHNe8v4H1 jTFUXzZG7d0P1pYCgp+s62dlm+VAyZJOBj5PSRkUVW+7pTvSucAyi8K5nYjbod0= =tUfP -----END PGP SIGNATURE-----