-----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-nodejs-14.1-jessie-i386.iso.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-nodejs-14.1-jessie-i386.iso 061e89787b86f1fdd4d43c4660f87322 $ sha1sum turnkey-nodejs-14.1-jessie-i386.iso fdd9bd8b0907d65bb7ef06f2c8aa9803fafce0c4 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkPzAAoJEIXCXpWhbrlNm8QIAMxh7zDlB2ZpH4Tp+cBeDQJs rNYrB3DQEtLMAMmDcBsr4Zb7OvZforCmqEECmF/eJehW6mN1tTQpzms2DktXIq65 oOpDv0F8uYE6R+WLSVHp0VP2bIQAXUBA3T0aOE3NthpOedECh1SgnL6RV9zf1nPb DqQXZh8Qf0p/5U4xQhrZsdGJcgRus36sMWHU3PG1EbmlRDTnKpDlezFAXyvKjSEo 9/1XVZAt8KTwemL22HqUdbljk/sWP5GJ6Ew2c+Atu/8Uqs97V93DJPjzcRled8Kx 5fFVRiUCp1mlB6NzshXvsurTf2YUBBr99BIyj2tflnrK1ngdwhGxh+3n9nZGm58= =W25Z -----END PGP SIGNATURE-----