-----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-zurmo-14.1-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-zurmo-14.1-jessie-amd64.iso 4cc3bde3a1b5f8d8942f661100dc1972 $ sha1sum turnkey-zurmo-14.1-jessie-amd64.iso 5bc8f84ae1002ea67fff2707d169ebe63b600327 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkP1AAoJEIXCXpWhbrlNZ3gIAKpN61hkdAkNQDfp2v0YIIm/ 79xUxJGNbSVner9czCSc3sIJz0HZPyE0o+HUCNVHMhHuaTTVyI293XF46fttnTDk 3AQMySZWc7+P5Lr4oWMrZLfGmSyee5/mwLrQA2FWV/euohJ0kE6xabpuj6mORvH3 jHFSuAu8FvMA4sqDT6UWwgBdyiJzTu6X+zLf15skAbj2+N0pX1MSSwb11d9TsrUY AvDke7S5yPij/Pj6rdMlhn5HVq9bMCksyz0ZlwRZPInJp3qRyk3S5UMh29WqfaX5 SdyqILq2SFEse7+sXGCtxgVN60Ot9RDngcEH6tuAFBwoODyUX+ff3dd5caapreE= =Hhsa -----END PGP SIGNATURE-----