-----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-collabtive-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-collabtive-14.1-jessie-i386.iso fd4eb6ea68f7bee8dde59bfd9612972b $ sha1sum turnkey-collabtive-14.1-jessie-i386.iso 41389697e62029782dd285af65224f0f8bcd79d7 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkPxAAoJEIXCXpWhbrlNG8sH/iMqDMc5b5b0EumCiW2umLJ+ KLqRTHAwZoSViW/aP8rIaH2bfACGPt4re97HGfNSs3x65T0CdCzbMzH8Yf9AIpoG u3dEuBNCoST6Z7VJBH1B0WrdHFSIJ5mRQyLaEJQXnkYmEf8MOqFCxzmN5NqFdTaT 02N4dExEzyTNJkzoLD8RrCmYPM9nsFO7vvOrUrowE4ZHgzEvjnIQHzPHp7RYvYHG mMu/iJXsVwmu7qi1qG3ONymmd4eTjvzqt9Qp/QZvCO5KqB+XgzgmTtpTsdhXPD1U GOqlbwvv1Pb9Jv477s6QlRhKWH+8DGEL6axoMLIdv2xtVLICpHRcWUqd3HekrkM= =bYgj -----END PGP SIGNATURE-----