This signature file may be used to cryptographically verify file integrity, like this:: $ gpg --keyserver hkp://keyserver.ubuntu.com --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-processmaker-13.0-wheezy-i386.iso.sig gpg: Signature made Mon Oct 14 18:45:07 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum f96283cacb7fcb5211a8e835c7280ee3b03bd1fa * md5sum 9dc19d2a4c70b771c6f5997ec9e722a9 You can calculate these on your end and compare to check for errors, but cryptographic verification is recommended for security reasons. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJSXDuoAAoJEIXCXpWhbrlN8CYIAK+UTVcBL18iDsv2yaIowC7p vkX2uh2qkoiQ36U8GGhPNglfim8s6KU2DjGI+nSLfU8odF6OMiVSff3OWztei6Xb RMV7M2Tn+0hhbyMBxhIz5cBJ5ljQjICJaEtakG/shntP+63ikwagIBO51ftDGtn6 jEjBX6gu/GT7hHisuljZD3GVJUvgBxQ6QPl8SPZXlqW9MIrmwWGZzeJ8WJ1QD8Qv hhw624Uc4bntj900rz3FljD8Yvh7ZulgrU3JyaE00Z642mElYi1Bno05nQLkILQB ytwkqQ1SHrSDP49LU8m8zVRCw7VccJ9xHbKuzJshB+JJi+1YwUPDfrI46EpsMZE= =egeu -----END PGP SIGNATURE-----