Passwords & hash functions (Simply Explained)

How can companies store passwords safely and keep them away from hackers? Well let's find out!
With all the data breaches lately, it's likely that the password of one of your accounts has been compromised. Hackers now might know the password you've used, but they also might not.. To understand why, we'll take a look at what methods a company can use to protect user passwords. We'll take a look at encryption, hash functions and a multilayer approach!
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[@tar509]

We were just shown this as a part of an information systems security lecture, I figured I'd actually go ahead and give it a like because it's simple and informative

[@simplyexplained]

Thanks! Really appreciate that!

[@Logical-Sense]

Keep up the good work mate, it was informative.

[@md.riyasathossain590]

Thank you, Sir! It did helped me a lot in learning how hash functions actually work! And also Thank You for simplifying the concept!

[@siddharthgarg1985]

Brilliant video.. I love how you explain such complex concepts in a simple manner.. Please keep up the good work

[@vz7742]

good mornin sir!

[@Lallushe]

Wow, I can't believe how well you explained that! Thank you sir!

[@ziomanzo]

You really explain things simply ✌️

[@GloryRay]

Great job. I love every single one of your videos!

[@JavaScriptRoom]

Great as always! Please keep sharing such a good stuff!

[@marcusswedin]

Reallly informative! Thanks!

[@rahulbiswas9971]

the channel name is perfect thanks dude. 💖

[@MiRaje8086]

This is awesome man, thanks for explaining.

[@BobbyBundlez]

AMAZING. really appreciated you goign through drop Box's encryption method. started coding 8-9 months ago, doing JS now and just started learning how to use the scrypt function as well as salting passwords etc... watching this video made me excited for all the deeper things you can do... maybe one day i shall make it a goal to recreate and code that level of password security like dropbox has! cool vid. thanks again anyone wanna share their experience with coding thus far? anyone think im doin ok learning this stuff after 8 months? or am i behind.... lol... sometimes i can't tell tbh i still love learning all this stuff regardless lol

[@Lukas-kh5gu]

amazing video. learnt a lot, going to share :-)

[@declanz5067]

Awesome video - very easy to understand and succinct, it flowed well too - very helpful thank you!

[@sebastiendebons421]

Very interesting video ! Thank you for all this nice work.

[@JamieWFilms]

Amazing video, thank you so much mate!

[@flowerofash4439]

clear and easy to understand this is perfect

[@RubeniAlimasi]

Learned a great deal of things thanks to this video. Thank you.

[@tymothylim6550]

Thank you very much for this video! Certainly learnt a lot from this and would be learning more about it in detail :)

[@maliqattan]

Very nice descreption. Loved it. Thank you very much ❤❤❤

[@swapniljoshi1033]

Explained very simply thank you

[@limontec]

Excellent work

[@DayTradingCourse]

Excellent and clear explanation.

[@0_-]

This is the first video I saw of you!

[@MisterSkraetsch]

nice video and very well explalined - thanks a lot!!!! :)😁👍✌️

[@UltirianHeavyIndustry]

Simple and explains a lot thank you :)

[@LuisFelipe-pq9lr]

This video was incredible, thank u so much

[@browneyedbabes7863]

awesome video! Thank you!

[@suyashraut142]

very informative . best explanation . keep it up!!!

[@shotx333]

Very well explained, thanks

[@ahmedaj2000]

thank you, very clear!

[@basmamp4834]

Very informative one.. Liked it.. Well explained!! 💯

[@abdullahsultan6024]

It's very nice video.. thanks for your efforts and keep it going

[@tomgi859]

Awesome video, very friendly and pleasant to watch! about dropbox- if they're not saving the keys in their db's, where do they save them? physical devices maybe?

[@TastySanchez]

Wow so interesting. Really enjoyed this vid

[@saidkarimsaidmahmudov3048]

Well, it was really helpful video

[@ImranPollob]

Excellent explanation

[@dhliu9687]

Thank you sir Nice explain !!! thumb up

[@Lollipop2018]

Wow. perfect video!!

[@omarelalaoui7591]

thank u man it helped a lot ...!

[@TravelNomad]

Awesome, thank you :)

[@datag1199]

Great video - thank you

[@TuxHouseEdu]

Thank you

[@chriseaguilar7]

Great video!

[@midhatbasit7306]

Best explanation

[@humayunnaveedkhan1281]

very well explained

[@lynnelenatorbay1450]

Great video! thanks

[@Vagelis_Prokopiou]

Nice video man.

[@Jeanmims]

Very clear explanation , well done

[@simplyexplained]

Glad you liked it!

[@himanshu4807]

wow......thank you so much...keep it up plzzz

[@sibincbaby]

thank you 😍

[@hashrate207]

Good work.

[@elasriabdelhamid5659]

Very educative video :)

[@kgreene104]

Good job. Studying for Security+ exam here and the cryptography has been one thing I've found it hard to get into. It helps to have different explanations of it.

[@drrider100]

Agree. Getting ready to take mine. The more I read the more confusing it is for me. But this video just explained it all. I am no. Longer confused.

[@seixasribeiro6715]

thank you so much.

[@govindmenon2196]

Savjee next video should be about delegated proof of stake

[@philipg.5316]

So awesome!

[@robertogarcia4637]

thank you very much for the instructional - learned a lot (specially w/the salt & cost things). Nice !!! Furthermore, your voice is very pleasant so double congrats!

[@jason_samosa]

Excellent content

[@MrRigdensChannel]

Nice work. Thanks for helping to clear this up.

[@JagadishTalluri]

Keep up the great work..!

[@simplyexplained]

I definitely will! Thank you.

[@jakub9640]

Cyber Security Dev: So which password protection do you want to use? Dropbox: y e s

[@MrShika666]

keep up the good work :D

[@ramanabalachandhran]

Thanks a lot for the succinct adumbration. And by the way. 04:11 ROFL 😂

[@rosalyna_24]

thank you so much for this vid it is very informative

[@muhammedsiddeek4068]

Are you a hacking student?

[@w0ttheh3ll]

great video

[@amicam5459]

brilliant

[@dev-bv5zg]

I use a extremely long custom hashing method for my server that uses many variables indented to that user only

[@xMAJxgames]

Thanks 👌👀

[@flyhigh6047]

solid info :D

[@dannyasper2664]

tanks dude

[@pcosgrove52]

thanks agfain...

[@quintonconoly]

nice!

[@rain_altman_009]

NICE VIDEO

[@youssefAbdelMagid]

very good video , I learned the concepts in a very good way... can you kindly do a simple javascript project to make the 3 kind of protection (hashing + bcrypt + encryption) to show us how to do it practically as well

[@yousribelhaj9243]

danku wel

[@Alternox]

this video is underrated

[@jeremysurls]

PLEASE do a video on Ripple!

[@IchwanulFadhli]

Just like the channel's name, Simply Explained!

[@dimitrisfou6908]

u are best

[@osiris5449]

My encryption/decryption algorithms I have (for PHP) take in a string, add some salt, some hashing and then locks it with a key then encrypts or decrypts that with a very “quarantined” password that’s been... Treated. It’s strong asf.

[@monickverma9637]

Could u tell me how encryption works?

[@iceman71true12]

so regardless of the fact that each of these different methods can be breached, best course of action is to have two forms of logging in to your account a text message to your phone that you have to input when logging in to an account.

[@Sergio0694]

Nice video! I have a question: what about saving each password with its encrypted version, using the password itself as encryption key? This way each stored password would have a unique encryption key, instead of a single AES key shared among all the saved passwords.

[@neoxr9655]

But how would you store the key? That kinda just adds an unnecessary step without gaining anything

[@maxmenius1319]

They should make a hash system that resets every hour

[@MorphTW]

How would you check input password with the one you entered on registration? 😊

[@user-tt7jz1tz6c]

i was wondering how to make a vivid video like this, what kind of software tool

[@kostasmed1]

top man

[@PaulinaJuba]

Is hashing possible for other things like live facial recognition or fingerprints?

[@Davegbuf]

Excellent video and explaining the technology. However, I have a situation where I don't know how I would adapt the concepts you explained because the scenario is slightly different. Your example works interactively by comparing user passwords with stored hash values. My scenario is for an automated process (no user interaction at all) and the credentials are self-contained in the program package. These must not be known to the user or anyone who can get a hold of the file(s) containing them. Here is a live example … We have a company application that requires administrative rights to execute but our users only have standard Windows user permissions. I repackaged the application into a single EXE executable script to conceal the admin credentials that are included in the script code. However, I discovered that compiling the script is not enough because the EXE file can be decompiled or someone can use other programs to see the contents. How can I adapt the concepts you explained in your video this my scenario? I need to be able to execute a self-contained application package locally (no network or internet resources) and with specific credentials while protecting said credentials from the local user or anyone who might get a hold of the EXE file containing the credentials. The application needs to use these credentials at run time to perform its tasks. Your insight is most appreciated.

[@parta_usti6219]

Well explained! Why don't companies put a limit on number of login trials a computer can have? For example, can't they just reject the user for a limited period of time if they enter totally wrong credentials?

[@simplyexplained]

Sure they can! But in this video I'm talking about a scenario in which an attacker has managed to breach the database and has all the (hashed) passwords in his possession.

[@jamesedwards3923]

Ahh , that is not what he is talking about. If somebody stole the database of passwords. That is what he is referring to. For example a keypass file. Is a store of encrypted passwords. If somebody stole my drive and got them. They can pound on it forever. Eventually I will be long dead and turned to dust. The reason 'Dropbox' does all this is not just for a website long in. It is in case somebody steals the hashed and encrypted storage. You still have a lack of understanding about how this works. As far as the end user logging into a website.

[@ozzyfromspace]

When you put up that list of the top 10 passwords, I was like, “been there, done that” 😂. These days I let my Apple devices generate and store codes for me

[@beholdandfearme]

How secure is smashing the keyboard at random while alternating the shift key?

[@eswarprasad9773]

Not only to maintain unique hashes...salting also provides extra security for example you can either append or prepend salt data..that requires lot of effort from hacker to figure out

[@0_-]

what do they do with the salted hash?

[@lucasguaru]

Man, great job there. How do you do it? I would love to the the animations in portuguese. I feel it's missing here in Brazil the way you explain.

[@hamza-325]

@@simplyexplained4601 You are a scammer! What a dirty technic to use the channel name and icon to do your black business.

[@LiEnby]

on 'TamaTown Rewrtten' ii do sha512 then xor the resulting hash with some random bytes then sha512 it again the original game however stored them in plaintext as there reset pass thing expects to just.. get the password back

[@chinonsoiwundu5782]

You mentioned something about encryption key being kept separately, how can it be queried to work on the web application? Kindly put more light

[@Fluli]

How do they compare the hashes if there is random salt?

[@joyanfernandes]

Salt is stored seperately alongside the password..

[@walterlol]

Excellent video but I am not understanding something: You use salt to generate a unique hash from a password (string). When a user re-logins and you want to see the hash of his password you would also have to RE-ADD that same "unique salt" that was given when the user created the account. How do you know that "unique salt" if it was randomly generated?

[@ifqi.r]

Same I don't understand this

[@Maxxxxxxxxxxxxxxxxxxxxxxxxxxxx]

You store the hashed password with the salt When you login, it checks if your login user/email exists in the db, if yes, then it adds the salt to the password you typed, then hash the combination and check with the hash

[@walterlol]

@@Maxxxxxxxxxxxxxxxxxxxxxxxxxxxx What if I get access to the salt you used to store the password? Isn't that a single point of failure?

[@Maxxxxxxxxxxxxxxxxxxxxxxxxxxxx]

@@walterlol yes but for that to happen, they would've already got access to your database. I probably forgot to mention that the salt is usually 32byte or 64byte

[@theuberlord7402]

The Imgur incident is misrepresented in this video. They did not store the passwords in plaintext, the hashes were solved and leaked.

[@dankelly]

Where/how do you store the salt and cost do you can use it when the user tries to log in?

[@simplyexplained]

You can store the salt in your database with the hashed password. And if you're using bcrypt, the hash, salt and cost are all in 1 string.

[@dankelly]

Simply Explained - Savjee Thanks. If I store the salt in the database (the same one that a hacker just got access to) how is that secure?

[@simplyexplained]

It just ensures that each hash is unique and that cracking attempts can't be speeded up with tricks like rainbow tables.