-----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-14.1-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-projectpier-14.1-jessie-i386.iso 6322def455384b37a8362d9513d52533 $ sha1sum turnkey-projectpier-14.1-jessie-i386.iso 9fc65868ebbfae69b91410c67f38bd12c3f19eb4 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkP0AAoJEIXCXpWhbrlNy1AIALNp4fHZIo2cYJfv/eEJtYf8 B+uLkWhw/wOWk0xT+/4F4BaYZI7SrCAD3D1ynsA+41zKJqfGEtFMhruyQBqOzXWe eBL0EfROAsIaS2wseBehE7ZrR7Io6iEQ+6WvGnij6Q2y7hP/okih1lLT7Bn+wy7J hPYpKz2RaPSfWKbI8CtzNQd3GKGicX2MH9XQnGYZdkSaEV4e4LoAiE8PoxChEFWF RCYro/QoWF3zQij6Y5e0CON+UioJvEg//HNB0Q80qQA+DTgHYlp1S5M+XTOHplpH WLEJ76gHiTmtdU7iZW1HSoBK1E828sPQwSa49J1knefWPe/oiMB8lBSvAwNUB0w= =ADtl -----END PGP SIGNATURE-----