An initialization vector (IV) is also called nonces, which means "number used once". Each encryption operation uses a unique IV.
IVs are used to increase security by:
- Introducing randomness into the encryption process
- Preventing identical plaintexts from encrypting to the same ciphertext
- Making it harder for attackers to identify patterns in the ciphertext
- Complicating determining patterns in a series of data containing cryptographic signatures
wolfrevokcats
Thanks! This helped a lot. I had an idea of what IV was, but I needed an example to solidify my learning.
benarroyo
Thanks man, I was going over WPA for my CCNA and I had no idea what the hell an Initialization vector was, and they did not care to explain it.
digitaldistancerecords
Thank you! The only question I have - how receiving part will know IV? Do we send IV with message itself every time? Is IV visible for "everyone" or encrypted as well. :)? What is best practice? Thanks a lot.
VladP
Thanks. Your explanation really helped. Great job 👍🏽
rajib
supposed that i capture the encrypted message 500 with IV of 3 then resend it back to the server then I would still win the game. I just have to capture the encrypted message every time I win, it does not matter if the message is different every time I win, i just resend that encrypted message and still win. Is the IV sent along with the encrypted message? Is the IV one time use only?
pontv
critical mind explanation...thanx a lot
jozefsoucik
Thanks for the video!
In this example, it means that the IV will also always be sent between client-server right? Besides the encrypted message
cimbot
then how does the server decrypting know this IV to be able to decrypt?
chaitanyakunda
that was amazing ! thank you for the great service
azozalamodi
How does the receiving end of the encrypted data know what IV was used to decrypt?
youtubecopyrights
thanks a lot but what are similarities between DES and AES plz
sammunta
what does IV stand for ?? please PS: great video
scaryaddress
but you still need to send the IV with the encrypted message (because no one else would be able to decrypt it), right?
Ainigma
You should all be asking why now:
Why not only rely on a random seed?
IV+Key is just one password.
You can remove key and only use a random IV and will end up with the same result.
Key would just be there if you don't want to generate larger random numbers at the expense of security.
okmm
Why not use random key then?
Basically you just used pair (IV, Key) as new Key, and it is as random as IV, so what is the point of keeping one part fixed, when you always use it in bundle with random part?
ЛеонидКраснов-ое
But he must also send the iv so that the server can decrypt, right?
jemmalitaha
Thanks. It is very informative. I have a few doubts though -
1. if we are generating IV on client-end then how will the server decrypt the message correctly ?
2. if we be generating a new IV each time we have to send a new message. Then how will we keep track of those IVs on both client-side and server-side ?
samartajshaikh
NO WAY! It's Kevin McCallister from Home Alone! From protecting homes to protecting Networks. Love to see it 😁😁
brianseagers
Bro do you actually use that much softwares ??? Clean that task bar it makes me stressful
