-----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-otrs-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-otrs-14.1-jessie-i386.iso 86a979ce842edb02932a0814f2d1a80a $ sha1sum turnkey-otrs-14.1-jessie-i386.iso 83ccee89d48767a2cb632fa141bdaf5bff4a2acf -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkPzAAoJEIXCXpWhbrlNXCYH/A1VbYtuytdvdMrT1qOmmcax AglUavD4GpBBpESVZlcrjLRtHnXgq+90pFdxZoxv6GF3xL3gVVw4DvMwM0y3sdYI ls/eXOqtZJCsVKrBEsfYPOHAu7LMDugYcANrZThGxg4BE2+Q/+DsFlb2yxlHMMt8 bydJkdL4xOpzqlA2vnodCnyxrGfvU0TWJdXCeyJ22bSxMsq2CDe9/8oZAvD2BiuS ++pH4Ej/qI+wTnrpLDB+qCZYvvURyDqGIQedCsrLgaY4f09tYKcHiHhBEhVZrYzB b421nMoF+IQQbnIanHZ2mCIpIs2fqsD2NdK+vreqegp6wezPTgTY6cnVVpijJhg= =Q+OS -----END PGP SIGNATURE-----