-----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-redmine-14.0-jessie-amd64-xen.tar.bz2.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-redmine-14.0-jessie-amd64-xen.tar.bz2 782f27c1927737ca4948d589c358c27e $ sha1sum turnkey-redmine-14.0-jessie-amd64-xen.tar.bz2 0b092a3222f4ee3c42772d193abff2cc2adde051 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWTDfJAAoJEIXCXpWhbrlNBZIH/AlJfjQjOP1grxvrqXiz9pgH xijz+OYsnc4leGqH/3ZpFngj9URPLuKeDymcNPHmbSwAvjm+U9vcySBcYf3GGFFA 3pB/+oRwoPLUTROI2SbW+TdeBgzWWJBMy1OPYWi3skFoHMpd60OsMos9nO6YKV+/ NuNP8a9EYhwPavLomRhU6ISm/dCwvFBxp0C12MmkiX0DSz1ejj/Ldb7oMaLIes4i Pwrz4Uegmil66TRAFQc7xP4g5vrjVm/AiebjyaFq/Jl0Xf1cpZcfMNOojh+RSpOc ciVLlBp8kHZT4UEIag66cEPBaTXN8RIUwQN1vOyZtLST4EzZHTx9RjdeqIfgbsI= =sn2/ -----END PGP SIGNATURE-----