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-sugarcrm-12.0-squeeze-x86-ovf.zip.sig gpg: Signature made Tue Aug 21 12:30:14 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 84caa135cdeff31a5b46ea7b5be09ff9c70d8525 * md5sum 05a6f7aa76511ffc0a3cb4f85567fc65 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) iQEcBAABAgAGBQJQM39IAAoJEIXCXpWhbrlNmokIANO9hJ5vuUlhkqj18/vM6Kw9 MFAFA+aO+rM3QUrsfhuywJpvKSwTga3ywwToP7z3NCsDD+01s9vgD2CVZsTH3t1q euBZzWOAKKJQmSbCPbMie+2cCDlCnNgupK8LSsw7bk8es6Z9z/QC7Rqp1+S1LCeU nD3DiuWxxtXRayCP0+8l+fo0SHeqdj9+kfIwzOSLwc7ZaSdFsSVuh8vPXNb09kXg IZt94gCneEkHo8xV0klGN8ZYJyxviyWKzfARr0sOEAxh9HDogBIZy/b/vjPn7NXb P+7ENdNKYUk6W2DCJuvKMPekT5NCbfa7HK9feDSI9kvEbcPwlslyVJyU89iz9DQ= =JBjW -----END PGP SIGNATURE-----