-----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-mongodb_14.1-1_amd64.tar.gz.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-mongodb_14.1-1_amd64.tar.gz 8fc8182deb5dec2ee3242ebe043aff2b $ sha1sum debian-8-turnkey-mongodb_14.1-1_amd64.tar.gz 930a9b69fd652f4d4c0d20f6ed8f7fa779fd2464 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJnsAAoJEIXCXpWhbrlN+LMH/j8pcm8SIdc4gqioBmRQgL0O eT0BZPadVmJW8jX8sh14Bp2l6+VMwQ/bZAl4O0V3SEn1glPkDtA370NzQn8XiAps Y9OdmaVFow/FPO3+EnT8ZCsfZyKbmpkoCFYK0/B0RYLXoiZDwz8pV2iHTRPZqPCv HcGrxHK3fcn3L7PsPUL/c2LftfFX7fvkP5G1EYg+bQn/CP+C8hSj0Pxw4zqtqHuo MrQB8aKW/VN6blYRO0cL6THubUupsln/YFQMgW+1DkUg2GneS91oZs4wzvFHwC6F L9IXzXIGNz8prEMyfpCGf0zdSMKtXxATZdVJ3rknHraoBFO3TLn+qGUHnJLMs2Q= =AfwE -----END PGP SIGNATURE-----