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Why is client-side hashing of a password so uncommon?
The reason that passwords are hashed is because the problem isn’t the authentication, but the storage. If the server is ever compromised, the attacker would immediately have access to all user accounts as they would now know the secret used for authentication of the users. Hashing acts as a barrier to this.
What’s the point of hashing passwords for authentication?
The idea being that the hash is reproducible for authentication, yet hopefully not vulnerable to reverse-engineering attacks (to discover the literal password) other than brute force if the server data is compromised.
Where are hashed passwords stored on a server?
Since the (hashed) passwords sent by the clients are stored as-is in the database, such an attacker can impersonate all users by sending the server the hashed passwords from the database as-is.
What’s the best way to hash a password?
Use HTTPS. Securely hash passwords, irreversibly, with a unique salt per password. Do this on the client – do not transmit their actual password. Transmitting the users original password to your servers is never “OK” or “Fine”.
How does client certificate authentication work in SSL?
Client Certificate Authentication is a mutual certificate based authentication, where the client provides its Client Certificate to the Server to prove its identity. This happens as a part of the SSL Handshake (it is optional). What is a client certificate?
How is a certificate sent to a client?
The client will then present the client certificate list to the user so that they can select a certificate to be sent to the Server. On the Client the Client Certificates must have a Private Key. If absent, then the certificate is ignored.
How to verify the authenticity of a certificate?
Verify that the Enhanced Key Usage field of the certificate has the OID set to (1.3.6.1.5.5.7.3.2). In Computer Science, Authentication is a mechanism used to prove the identity of the parties involved in a communication.