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-couchdb-13.0-wheezy-i386.iso.sig gpg: Signature made Tue Oct 15 10:22:51 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 2844117efff2908fa83a7309a1bbda5c8eb5a73a * md5sum 6af88038ca294e80c39d76d8c5b6ec3d 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) iQEcBAABAgAGBQJSXRdwAAoJEIXCXpWhbrlNKhUIAMmOpBGqrat0Ii0K/8U/0p/A hIUfxkmIloNEM6S+tFdLkVAh1cdzRV1dYqG94aWkf1Gb9d5+H6h5mKJ7Gc5DVPEe dMtbZl5va5ZU18eiN0awwsBh7L8H0iteTtXDcuCtUQ/Q/SUSt9hiVDzD+EcIBdx2 m9vpXKGsMduEX4jx/ZVZ4oK5kK41YFRfG5LEWvV1p5f52E6gTiJbGpbKzXkD3nM1 FnWv+MwAgyyjZBlzvEL3BBPLPS0Gj1b9kJZrFRJzhFpcgJkxDaHLn5/4+JdMG7fO dSBlSoboi8J+SaqnU6pvF1+jgQbSOnd7hHLOApJSH69xZhcrLyLkWmJ1VkIspO4= =ZvUY -----END PGP SIGNATURE-----