Every communication protocol should have a mechanism to determine whether the received data is valid. I once encountered a team that didn’t have such a mechanism. Their device operated in a ...

You send a file, but how do you know it arrived intact? In other words, how do you know that it didn’t get cut off, garbled, or changed somehow? Simplistically, you could just add up all the bytes in ...

The primary aim of calculating checksums is to detect changes in the data. These changes might be the result of error or manipulation. Regardless of the cause, a ...

Unix systems provide numerous ways to compare files. The most common way to verify that you have received or downloaded the proper file is to compute a checksum and compare it against one computed by ...