-----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-lapp-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-lapp-14.1-jessie-i386.iso 8148a3d16e5c4f2625c32b2a44856c64 $ sha1sum turnkey-lapp-14.1-jessie-i386.iso 178c01059e02dcb457be4f83249c1ce6f6b5ba75 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkPyAAoJEIXCXpWhbrlNDgAH/0gILYHtyzy++j1cJfGiu9FY s0Lh+XBA1dQ+t+xapeDALxdsfmmwi6hWCWpUuuwOWrxxM25Yj4x2q4bfVjkqqmiC 7ZYAJ/2idlf+XGxmZa2mnoFaw0I6eE+OrtpCt5g47tGCZw8Q99DIvP3/Q6cFe2r1 dvDYWTgxpTgcNxFM7iLKB+srQ0aVrHMKOdhlLEHKCem3vX1sH7umfET5B2I4ntt1 2YMJb3ZD3Fyb9uT379v/tnzhlgW+KtUzWPAlhvfYlq1b0bjAqAFioUF2y5/mjKZb rbdLdlDijAf4sZPHzp+w7f38vHE47L8OHx1cBKu41gs5cufILlmPog3X1VjM6Cg= =PjH3 -----END PGP SIGNATURE-----