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-prestashop-13.0-wheezy-amd64.iso.sig gpg: Signature made Tue Oct 15 16:23:47 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 0f53a1f4e6e30b19db8e313b099c9aec2c48b18f * md5sum f91c8c496265a687f5923bec3e8a36a4 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) iQEcBAABAgAGBQJSXWwLAAoJEIXCXpWhbrlNMBEH+wRHQK3iiEw9QqAx+k5zlUBo gV1oGkhYIn/MYQuKAL+X3ZqhTam5e7fiGkq8OTK/GRk5rTPoplkmTHJArjQnjB4+ AeXIsSqTAoiUqu1cq7rz5caAffo2+0DpO0bi3LWzqK0UBJFnjyXRx92iR5YKVC0D MHDZ4GSyjpu2qb9z+Q44N+7+PYappxEZvfrNXwv+kMpHSSwC6CzAUwRuAK9aba1j s7mJffehO8OWp00MM5iw0FZbwq9cKJDUNc4r7rLN0H9GBgAS7pj0rZmvha2VumQA kKTIL47U0Pfltfq77IP/ydOKI8IJBu+iGGkkQhVsYbFNAILDoC68eC9JWwyyucU= =Ko40 -----END PGP SIGNATURE-----