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-e107-13.0-wheezy-amd64.iso.sig gpg: Signature made Tue Oct 15 15:03:47 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 243d58fca0c2878dd3c95c1e88e8c67c22772023 * md5sum 6a56766e28d16774167cf8fd204645e0 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) iQEcBAABAgAGBQJSXVlKAAoJEIXCXpWhbrlNDIoH/3ONIXhknc4bFV5cxTYwsxtA 3Qa0U5enUt4pyGpDkJzd0rZsx8r9cXdF588EWshKyttr2Mh1CviR9FgERsHHR5a7 HO+VKQKU3hPWrZuDR9xfSdm+1ebKjX9NI1CVtpvsRFjqPaCagVv6pEI26Lw7+KoZ 9/tm8O9CTAAPPBkx8Het+ZGUbBjeRlNvcH65nfKHSabvdC8rlzI4DbPlNvKYVBNJ G8jLut+T7CiIBepgtwjCOvyqv3VBKY8/VPwP5MYkcns0y3twY5kZDGkdKHO1H2Qb w8rIVkprq/uN+rYB3f796FSHqxUVAj2dIwneCKJYbb+uc0Fa6N9ewVgKyy0uvR4= =Ty37 -----END PGP SIGNATURE-----