Verifying Files
From charlesreid1
Notes on verifying downloaded files.
MD5 sum
Be warned, md5 signatures are relatively easy to spoof.
openssl dgst -md5 filename
SHA256 sum
openssl dgst -sha256 filename
Example:
$ openssl dgst -sha256 kali-linux-2017.3-amd64.iso SHA256(kali-linux-2017.3-amd64.iso)= 395bc0af107806e5bf06edc6ac4af1f96caaf04f465831abf2f33ce51b73968d