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-b2evolution-13.0-wheezy-i386-vmdk.zip.sig gpg: Signature made Tue Oct 15 14:51:19 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 39d1dfc75f8a51aee17f56eba527f24b6894916b * md5sum 8f3d5a48405b765125c36fcbfc35d6b2 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) iQEcBAABAgAGBQJSXVZdAAoJEIXCXpWhbrlN7TcH/1OejX1CAW6CO+bOhHaO9NeF yDhJnOV8+WaMmAGyd80twvFkHIocTujd36NvVmgDAPoW4ieqKcqp+2QqNdAt09Se oKWEuKDgIPSlrFSGFOJ+uXGzS6n6SvHhzr/0ZI+wKFofI4O0o3fNHrXSwDtAEtj9 5Npr2SdBQKS2gG/zy9daiFW3NU4IyXEqI98s5uoKAuDg8nT5pR+OXcU+bX1mgi3v V14DIfoxqqN/1sMi0mLgdXYe4xcwDw/xtfA/PmWZFPLMoiXowSyh+KCa+QEhJmx2 M2DC0O2iGF/28kYEjU465Zl0uicCqHIXi+IimzQv3YFXDZA8ayf5+va5Mo1wkZA= =zyyy -----END PGP SIGNATURE-----