-----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-mahara-14.0-jessie-amd64.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-mahara-14.0-jessie-amd64.iso 73ff965ae08d047dbe3e017bda25801b $ sha1sum turnkey-mahara-14.0-jessie-amd64.iso c327732196b3a54854dc8d1d5f7abaaf243fdcef -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJV7BrpAAoJEIXCXpWhbrlNcuMH/j7Iy6jLQzNq9yfRcOK7WfW8 Ngc2UmCngEAZec1zbANRB9wYn7tj+iTOmLtCwLDxFfCTWJIPRMtL7HN6aDzIshG6 XemxxrzltqFSOkzHlQn8dsH14ynglVqTdUMniWd7X30FHcae3XzNXysOcHEOZUCG 9DCs7So7+aX1t2MXBT+ly4tSUCvk+5A13QMnfduZAgvoQ7S1fjl+lJEvT4nAJJxF VlxGpV7OzU0rsZjF3NnGWyv0aGbThNGyPxj7sRieNHAbxx6mpYgRo/2evljLc4ao jwJFx2zC/zOQ2zAgGIc2dBBtq3MQwUF6O1XXpB8szGyY77GyLGqd1i11boq8Ses= =d/77 -----END PGP SIGNATURE-----