-----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-lamp-14.0rc3-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-lamp-14.0rc3-jessie-amd64.iso c81a959af965f120b70a805593e4982b $ sha1sum turnkey-lamp-14.0rc3-jessie-amd64.iso 2ddc56b5d8541ca5268144b07f04604909a8a2ed -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJV5sDuAAoJEIXCXpWhbrlNJ98H+wYJlu/InbKmATnnZe/Z1cFH HmjutRaH0LvyGyrztIRWmoY3eKju5rNFr5RUt+y1bE4bztjif8fHx5Xc7wIbSfL+ 9hCTyM0PEfGXhOAwiZIb8kQ7vSQLN2g49HwkfyPFIhcWRB0YBYRleJpGD3Zc4V6v aWLPfNV/6T4qNMOfIik1inwiWxGTGYYmnfsBM8TLFHJFA1bG9KdTlhd6xjSg5eIn a2TEGBE8TO5ZZtINVRzN8aM+YdBQe/ZDvLbG6agiKxngmz7RzKbwztPVwijXNyJ0 D0XoVEn6i0hdmVDwulp9e34p8wfWhbsEOvOjGYGTHPkFfJmWJqXMfM+EOQM9Ji0= =8LNM -----END PGP SIGNATURE-----