Tag Archives: computerphile

What is an Hash Algorithm and What are Hash Collisions? Tech News 29 JUL 2015

Tom Scott, who I think is particularly adept at explaining complex computing concepts in very understandable and relatable ways, joins up with Computerphile to explain what exactly the idea behind hash algorithms are, how they can be used to confirm a file’s transmission for the most part, and what things called hash collisions are.

Great, so just in case you were still using MD5 for something meaningful then, best you move over to something a little more modern, no?

computerphile

Related Link: Youtube

How NOT to Store Passwords Tech News 20 JUL 2015

British presenter and tech personality Tom Scott (whom I’m quite fond of featuring here on my little blog thanks to his likable personality and way of clearly and concisely explaining things) joins up with Computerphile to bring this great 10 minute video on how software developers should not be storing passwords.

The fact is, most of us in the trade would probably have implemented pretty much all of these erroneous methods at some point in our careers! (I know that I certainly have)

Definitely worth watching if you are in charge of writing some or other access-controlled system.

Take away points: Passwords should never be encrypted using a two way algorithm. Passwords should be uniquely salted in order to get differing hash values.

Worth remembering!

username password login screen

Related Link: Youtube