-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Two steps are required to cryptographically verify image integrity. 1. By verifying the integrity of this signature file, you can be sure that the checksums included in this file are valid. $ gpg --keyserver hkp://pool.sks-keyservers.net --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-asp-net-apache-14.1-jessie-amd64.iso.sig gpg: Good signature from "Turnkey Linux Release Key" 2. By calculating the image checksum and validating the hashed value is the same as listed below, you can be sure the image was not corrupted in transit or tampered with. $ md5sum turnkey-asp-net-apache-14.1-jessie-amd64.iso 8c5f88a6919571a9f38db563a1f0f2f4 $ sha1sum turnkey-asp-net-apache-14.1-jessie-amd64.iso 3b125f4ad7c50f52cfdf9dcfd841e7a64dab9594 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkPwAAoJEIXCXpWhbrlNFbAH/3IFJerSbjmdZh70AiacUvsA pnCN3kKeXK5ScQdy01ngHxHuv8Extd+cxI7xGaNF0nfU3Q0iVHxx+niqeov2Tv0N /L27fPeZ6tbxQPQCGwdGp0hsjr54Ao57deSA1DT8yFF02eTC8dwbFxUAvDSXc1Jn ryCTvv5YKroyybZmFtDWvCTwXM9xvd1m8jGw3G9WVEwERDS6JtSvi3mZ6XmuNWCl +uulOu7I4o+0bka1/rT3gfVV1Nl04+8pjggNWHkM0nP6NWW/uv6aC1kwtY7ZNVmu mlP4VBnrbVkjBV+7WUzEOHJYsL2N6lJNlv19OWwaQx6DF7VlSrNiXC+sVk6YshY= =9ViN -----END PGP SIGNATURE-----