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 debian-7-turnkey-phplist_13.0-1_amd64.tar.gz.sig gpg: Signature made Wed Oct 16 09:43:22 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 300349533ea550ae9097a9b6e2715cf5550f733f * md5sum 255cc3874c43a8761b240dd6867c0deb 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) iQEcBAABAgAGBQJSXl+zAAoJEIXCXpWhbrlNdBcH/iF1MuvCKD1CIC7CU0f3BzCE m5saF34Hm3NNfVkMCZH9/PN3wvIQT3D0xHtJB9fq9iattnL8d2ckFtS08X1xHg1q H5KbGGEsqRrgrlccNrH6r9Jl0yDrmZYRUvTIn/47zcbfBpEo9Y6ehT9eA9EPyE20 Tv5e2Ed3M2D5EiMfpVWgbjLNqUIixcweQj7kedP5x1EWT8AADACj2falhaqg9Tkb ScTjejv2mMHRIp+Zjy7mLSYEELDHFCO3TCYp7gbIKMj++A1VvYd9dDHCRA8vSf6U 2xhhZYw0FzztUOU2pFamsXdiF1MiD5sSH+7QmZVnvGeB7q+QeLM6k2CcBNb5vjo= =jaZy -----END PGP SIGNATURE-----