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-icescrum-12.1-squeeze-i386-vmdk.zip.sig gpg: Signature made Tue Jun 4 21:20:01 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum db213d2d9226a916e81626cb2540909f68ee40bd * md5sum 5a659213d075210822e13a6e7428d44c 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) iQEcBAABAgAGBQJRrlnrAAoJEIXCXpWhbrlNwiQH/0DTA3AkbszGnurdk66ml8P9 9yfudUddPwJgnRFQ8nYqkWXIA/wrlRiE28GfvelHDYdLNSpNeoESFjd7Jb5D8znY LWcd/Xy4Ht6NNKaGrmPJB4l/4fKLTb6Wh6SbwCOpStpzluPY2NF1Mihh7qfEElWW IUDo2ZZHJj8wsFWjNQPzj+y2tyqLZqZEnhL4tddUGmTIO95+alJgG0JYwXA7xKh2 FQRXObk8PX4uc1PSYhz2D+UHzp2vEhKTIiCZss9QyMxQc7iuyjw4kwCNTNMCDEPq bYVog8JgiikNqPjavNJyEiohmmKFsGC2A0O76pK5S1uX7HeonV8NKc8xBHRa3Gk= =+i7x -----END PGP SIGNATURE-----