-----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-projectpier-14.0-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-projectpier-14.0-jessie-amd64.iso a53176616ef64871c4d2ba58e91924fa $ sha1sum turnkey-projectpier-14.0-jessie-amd64.iso e6f89bb197a16dbf2c86f3aa905a59e306597f89 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJV7BrqAAoJEIXCXpWhbrlN59UH/12WpEh0RUzF1bklWYTS/2LV VIIi5ucsyzUvDnFc9sB5x9UJ3AQlbinhxK2zKUkjLuFMNl/tZevDurFF9HNAGEOk UvpoVmqOXi3vXtT/g++7KGQw/Kz1cDFrKO8EcZV2aritJZpgjwE4hW8dRVWH61Sn A2v6/LkqK8hyE6uNdZNAyXzuyDIlK5QMnuIIyBpbf7ictQl4TAnXrTNygamgSthh wJLdkA4FcM7zauFBwf84+lUJFd5uuzOqTvU3ctjjApHYMpMShTzFsJ3mXknrVo/a CPxvVsMdJupqaxuWVhET62GFVdl80RjwhlKe7tVgUTc9OLJ18T0U01h837+rCi4= =ciuA -----END PGP SIGNATURE-----