Hash Code and Checksum - what's the difference?

Question

My understanding is that a hash code and checksum are similar things - a numeric value, computed for a block of data, that is relatively unique.

i.e. The pr

Answer 1

These days they are interchangable, but in days of yore a checksum was a very simple techique where you'd add all the data up (usually in bytes) and tack a byte on the end with that value in.. then you'd hopefully know if any of the original data had been corrupted. Similar to a check bit, but with bytes.