pgp verification of the iso

After downloading the image file, download CHECKSUM.SHA256 from the same directory. Calculate a checksum for the image file. FreeBSD provides sha256(1) for this, used as sha256 imagefilename. Other operating systems have similar programs.

Compare the calculated checksum with the one shown in CHECKSUM.SHA256. The checksums must match exactly. If the checksums do not match, the image file is corrupt and must be downloaded again.

See "2.3.1. Prepare the Installation Media" at https://docs.freebsd.org/en_US.ISO8859-1/books/handbook/bsdinstall-pre.html
 
Back
Top