Is RSA susceptible to man in the middle?
It is one of possible measures against man in the middle attacks in PKI, not limited to RSA. Now, when A sends an encrypted message using what he thinks is B’s public key (but is actually C’s), C will intercept this message, decrypt it, then encrypt it again using B’s actual public key.
How does SSH prevent man-in-the-middle?
To protect against man-in-the-middle attacks, there needs to be some kind of shared trust or shared secret between the client and server. The most commonly used methods are: A public key on the client and a private key on the server (e.g., SSH) A shared secret value (e.g., IPSec with preshared keys).
What is the weakness of RSA?
One of the seeming weaknesses of public key cryptography is that one has to give away to everybody the algorithm that encrypts the data. If the message space is small, then one could simply try to encrypt every possible message block, until a match is found with one of the ciphertext blocks.
How to do a RSA / AES combination?
that’s the way i use to do rsa /aes combination client generate a random aes key use the aes key to encrypt the data you need (rsa take longer time and have length limitation, so better use aes to do encrypt) use the public key to encrypt the aes key pass the encrypted data and the aes key encrypted by rsa public key to server
Why can a man in the middle attack not happen with RSA?
You aren’t wrong, in the narrow sense. The confidentiality and authenticity guarantees offered by asymmetric encryption presuppose that all parties have authentic copies of their counterparts’ public keys. If an adversary impersonates your counterpart and fools you into accepting their own unauthentic key as the real deal, it all falls apart.
How does a device generate a private RSA key?
Device generates private RSA key, and sends the public key to server. Server generates unique to user AES key and uses the RSA public key to encrypt it and send it back to device. Device gets the AES key. Uses it to encrypt password and username and sends it to the server.