-----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-openldap-14.1-jessie-i386.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-openldap-14.1-jessie-i386.iso d44455d47d9605c9f90cabee5a4c0554 $ sha1sum turnkey-openldap-14.1-jessie-i386.iso a92fc1233b48a5504be72da93eae77bf5c29f7c6 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkPzAAoJEIXCXpWhbrlNqooH/RsbP8QQzr1QGZ+m0eV/TOLF Z1VTXkNXXh1wmENPLlGBow3SmV+yB+oElUwwAXux4Bh4TV+MDXzwLGyvzRzgVrBT T4rB1CDhCuoc7u9Su8xvmWZFpWKA2FNZSc6TRbseXlWXkjYdgcxryJl3o1wU+Vs+ hXedsT8QQij3eAK0Bg/4/MpLL6Z2K2sQXyL8BPmpWU5/GjDkjJBAvatDOEXdYRH9 X8mv3XyunaVUDMSmKzQtuskwJfbR8Syb0VwjWS5sukSXk/eOqGiFgzT39Ax/AQVN /jnZ2JUHw3vNuN1Iry7ZAIy2d3UmmWHdgsMSINpZPaX9KV17U39DsuIuZO10Dc0= =ASd3 -----END PGP SIGNATURE-----