-----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 debian-8-turnkey-concrete5_14.0-1_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 debian-8-turnkey-concrete5_14.0-1_amd64.ova 195de134118459545b79d1db2ccecb72 $ sha1sum debian-8-turnkey-concrete5_14.0-1_amd64.ova d7ab11ff496a4914b823fc0344dc9e25ca709671 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWXYG2AAoJEIXCXpWhbrlNLyoH/R5PZPng+safqRWpN1bZNs3d AO82JwsmjqO6GK8Uqhq38cUDxDfD8pfyqY6OuALGycaQknMN9OkDGWx54szf3RDf EnprgpZsgk6M1cxVBW4/NLvaKJ4AtC5rvDLReHg83lltiqwcKdmeIh5kLHI+BHo3 qTd16HdbVsEY7ZvmiLhRC5LkAEqwBvF1APWVM44sEjBZpwOl2QrBtaWsigcCvEA9 w9BTnSM8dp8qfRTZGlFms/dM9CqHGpNToa0fw8vWHHBLxNQ6gwF4U8UQzlGx4Gy0 bszKf/M9yGvKCrEEpVdzDlmRW5yFRdQcPZYJpiFxVGubtbBxkmCr7Ag/JAC5hMw= =wVqz -----END PGP SIGNATURE-----