This signature file may be used to cryptographically verify file integrity, like this:: $ gpg --keyserver hkp://keyserver.ubuntu.com --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-lxc-13.0-wheezy-amd64-vmdk.zip.sig gpg: Signature made Wed Dec 18 11:48:35 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 756435c2c2ec7d1f262b74637c52716d7a0f198e * md5sum 07151964c26dafba4533730a42179317 You can calculate these on your end and compare to check for errors, but cryptographic verification is recommended for security reasons. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJSsYuNAAoJEIXCXpWhbrlNf3AIAN8w/4PP3s7mRVwESXocKRFZ CuJxGrWnzRUIWYP1CKR7fDvAS/WEIXqFrIvi0OAr2yfjEohyaopgCY04zslXL2Q/ nJUh5SF9/bXIQxnqCLDUb8n7vWv8K4u9HFi3eAFms8maGPabx11omrZh5RIgQRSV a8VGxWr2igmBdyvtn4O81Icmdiw5W+SR4GPa0bOIKE9drbj12zxYIeCvbVj/LpiQ nHR3lyymncJA9UH6/lKHJKJYUvX2Pe2o97MnmVKFMfujo/dyO4bTrWVVqltdBvgd N+4x/SjIHV2GzKUlxDDjzjCuynS+hQ3aJ9Q2XQTei5z9m4aqFddwoEP5NIAlW10= =JCr/ -----END PGP SIGNATURE-----