4.4. Verifying the integrity of installation files

You can verify the integrity of downloaded files against checksums provided in SHA256SUMS or SHA512SUMS files on Debian mirrors. You can find them in the same places as the installation images itself. Visit the following locations:

För att beräkna kontrollsumman för en nedladdad installationsfil, använd

sha256sum filename.iso

respektive

sha512sum filename.iso

och jämför sedan den visade kontrollsumman med motsvarande i en av SHA256SUMSrespektiveSHA512SUMS filerna.

The Debian CD FAQ has more useful information on this topic (such as the script check_debian_iso, to semi-automate above procedure), as well as instructions, how to verify the integrity of the above checksum files themselves.