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-ushahidi-12.1-squeeze-i386-ovf.zip.sig gpg: Signature made Wed Jun 5 00:58:10 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum b716de7728d99307f0020ee90f8b098984939818 * md5sum b612bad115bca8bc40b9a7dfee1c8d7d 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 v1.4.10 (GNU/Linux) iQEcBAABAgAGBQJRro0WAAoJEIXCXpWhbrlNlIoH+wTMKuikHFHywpTDdbQ5Y9Ai DWeruPhkkEyoez80zJQGyIOrYJnXUWd8P+neNqv31pUZoKVDbimnv/TVfzBbFAn6 I8G6vXqHAdCuR1PgNFgOVlK3CQIRkZReuOHWkXaFIMYy9ZphbMVVV99NK+D5sGcD Jwwz704rqKrkVdo+8NaXbay89BEmfyMno/4ofJfh6R9bsSHhjOf2A6AtOZS9Xb0k B6jTZ+aynEcmH62vrzq/lDpAuVcLmE9YeDqKoMy55Qh6YB6YOxemhn5gnVLQj2gY J2QTMD0NVTDPNBoqWxhf2I68tXytlFSiJnXYiN53i1lP/lPrqa0gYQDn7FY1hE0= =bKQv -----END PGP SIGNATURE-----