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Before Alice and Bob can start calculating Ya and Yb, they need to have a public "exchange of secrets" session with (a, q) to ensure they're both on the same page.
I love the fact, that you suggest using HTTPS as a solution to savely generate a shared key, with Diffie-Hellmann. Because in essence HTTPS uses RSA to generate a shared key, wich is then used to encrypt the Messages between Alice and Bob so that they can communicate, without a 3rd Party interfering the messages. And over this secure connection, you would then calculate an other key with Diffie-Hellmann wich is your second shared secret (after the RSA key for HTTPS). So why simply dont use Diffie-Hellmann and use RSA for key Exchange?
RSA is used in encrypt the text and diffie hellman mostly used fo key generation... Sorry for late reply... Please sshare with others... Please subscribe my channel... Please follow my blog: chiragbhalodia.com
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was expecting for ways of Preventing MITMA in Diffie-Hellman to have been more on how to advance the protocol eg by use of authentication certificates or something.
Yeah... Difie-Hellman is not protect against MITM... Some authentication protocols is required to exchange the key....else use kerberos scenario or needham schroeder protocols... Please subscribe my channel.... Please follow my blog: www.chiragbhalodia.com/p/network-security.html
Dear Ayush, Watch video properly, step by step. You can get your answer. Still you cannot get answer then ask me again.... Its very easy.... Darth is capture messages from both sides .... For example, Alice think that she is communicate with bob (but actually he is darth) and same way at bob side.
WTF... this means diffe hellman key exchange is completely useless. I thought diffe hellman key exchange sole purpose was to prevent a man in the meddle attack even when there is one occurring. The secret key is what makes the data un readable by the attacker. from my understanding the attacker takes both parties' public key and provides them the with an attacker public key... that is just slick and scary...
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bless your heart, you have saved me. Thank you, I pray for many generations of your family good fortune.
Thank you! You too!...
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Ur A Channel covers almost Every Important topics of Cryptography And Network systems 💯...helped Me a lot to pass ...Thank You very Much Sir 👌👏👏👏
Thank you so much....!!!!
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understood everything clearly 👍
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you should explain why/how Alice and Bob are both aware of (a, q) -> these need to be publicly exchanged first before they can compute Ya and Yb
Before Alice and Bob can start calculating Ya and Yb, they need to have a public "exchange of secrets" session with (a, q) to ensure they're both on the same page.
Very informative video. Thanks for sharing
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I love the fact, that you suggest using HTTPS as a solution to savely generate a shared key, with Diffie-Hellmann.
Because in essence HTTPS uses RSA to generate a shared key, wich is then used to encrypt the Messages between Alice and Bob so that they can communicate, without a 3rd Party interfering the messages. And over this secure connection, you would then calculate an other key with Diffie-Hellmann wich is your second shared secret (after the RSA key for HTTPS).
So why simply dont use Diffie-Hellmann and use RSA for key Exchange?
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Very helpfull.. Thanku sir🙏
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Difference with RSA algorithm pls explain
RSA is used in encrypt the text and diffie hellman mostly used fo key generation...
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nicely explained. : )
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sir man in middle is cyber attack and meet in middle is cryptography attack NOT same
Both are same....
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thanks for diagram!
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was expecting for ways of Preventing MITMA in Diffie-Hellman to have been more on how to advance the protocol eg by use of authentication certificates or something.
good recap though
Yeah... Difie-Hellman is not protect against MITM... Some authentication protocols is required to exchange the key....else use kerberos scenario or needham schroeder protocols...
Please subscribe my channel....
Please follow my blog: www.chiragbhalodia.com/p/network-security.html
how do they calculate k without private key
Dear Ayush, Watch video properly, step by step. You can get your answer. Still you cannot get answer then ask me again.... Its very easy.... Darth is capture messages from both sides ....
For example, Alice think that she is communicate with bob (but actually he is darth) and same way at bob side.
Ok but how does the attacker knows the initial agreed upon values of a and q to generate his own public key
the values are agreed upon in public
Yeah exactly
@@ChiragBhalodia yeah i figured it out, it can be sniffed since its public info and no encryption XD
Yeah exactly
WTF... this means diffe hellman key exchange is completely useless. I thought diffe hellman key exchange sole purpose was to prevent a man in the meddle attack even when there is one occurring. The secret key is what makes the data un readable by the attacker. from my understanding the attacker takes both parties' public key and provides them the with an attacker public key... that is just slick and scary...
You are right...its vulnerable..
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nice
Thanks...Sorry for late response...
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Sir Link is not working
@@hirenmer2279 Follow my blog: www.chiragbhalodia.com/2021/10/man-in-the-middle-attack-in-diffie-hellman.html