-----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-e107-14.1-jessie-amd64.ova.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-e107-14.1-jessie-amd64.ova c03fbe2c379ec046d11775a3a04a345c $ sha1sum turnkey-e107-14.1-jessie-amd64.ova 2fdffe69e03f4f72e0b5453ba3a3d7fc4f072a5f -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJnyAAoJEIXCXpWhbrlNDPUIALsByO78agD+buFborF0Xqmr f1Vl6F0KSllgjSeXQLsBhW9k+HfPGm8QyYRW0EyJn6ohkzZAejAt5F6E2SoeErsB 0TC8Y+HdWGHg6vV4Gu/S0i1EcrwgrRjaLF1dB/GjyntRGhVE/e6dQDE+meMCq03R 3UB6moDqxipOhIuVo46hzF/k8hi/J63guSaONH30gDY9CHSBlg7mqKvnonD5UIxD 4FP1dHIDp5k019haT8SDDcq1FvH7SjIz2menxaKo19eRS2Vd8JeYLveWl6ZnyBdt oh1FcqcMQi2iG4qw4yz2/YYz95FF+i+RTYzw2JIbhRI7Cqntm5LC8ItwJEa79Wk= =2xM6 -----END PGP SIGNATURE-----