December 2021
Beginner
550 pages
20h 48m
English
For many business requirements, you should understand the use of digital signatures and hash functions and what types of ciphers to use.
To ensure that the values of a message have not changed—either deliberately or through transmission error—a summary of the information, which can be verified through a repeatable process, can be appended. This summary is called a checksum. For example, to make sure a string of digits has not changed in transmission, you could append the sum of all the digits to the end of the message. If the recipient adds up the digits and reaches a different value, then the recipient can assume that there was an error in transmission and the message should be resent. ...