-----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-punbb-14.1-jessie-amd64-vmdk.zip.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-punbb-14.1-jessie-amd64-vmdk.zip c5b4954882c544306762665282e763bd $ sha1sum turnkey-punbb-14.1-jessie-amd64-vmdk.zip 8379bb41d52ebc74180a67f62596d240212e3bd8 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn5AAoJEIXCXpWhbrlNPO0IAOeZLV3VUu/30m6CEXAWWckd pvGwI2Rfe7pBe3gTeu1WX0gSDt57TlFOBL1P+ORf2XiDFGIEOOTYOFaiSfxQsG00 k1oV7XlP0+fPYO6SODTmGG1NLgEcERN7fru1GZiuK+kOqtVPqjJv/9R3FxAPF+I2 f2Z9yYntpduI3XJOLh6GF58Wxr65IIuiRjUwBQzlm6PYyvQYKc/KEswtRtRbV4Y5 PD9UQCJs4PeYY3OZ0uRXty0FJEZ2Qz+HjymHqLnOtifVPpqXxKgu2tLW8+Pmo8Av XLXnoXIZflXmjU4YpLDsY/8jSccddgI3H+KylzunmexXBzrFvQXlAsFp4gjcaqY= =0z2u -----END PGP SIGNATURE-----