Does SSL provide non-repudiation?
SSL allows you, the client, to authenticate the identity of the server. While SSL provides authentication, privacy, and data integrity, it does not provide non-repudiation services. Non-repudiation means that an entity that sends a message cannot later deny that they sent it.
What is meant by the term non-repudiation?
Definition(s): Assurance that the sender of information is provided with proof of delivery and the recipient is provided with proof of the sender’s identity, so neither can later deny having processed the information.
What does non repudiation mean in TLS protocol?
TLS does not provide non-repudiation. TLS is a transport layer protocol, that helps to protect the data that flows from one point to another. You can authenticate hosts with certificates or even a user with a client certificate. However, non-repudiation means you can prove that a specific person received a message or is the author of a message.
Can a signature provide proof of non repudiation?
And in regular TLS there is no way for Bob to prove by himself that Alice has in fact repudiated her earlier statement. So no, regular TLS does NOT provide non-repudiation. So your book was right. Signatures can provide non-repudiation… Now why is that? Asymmetric crypto allows you to provide proof of authorship by using Cryptographic Signatures.
What is the difference between SSL and TLS?
SSL/TLS is a tunneling protocol which provides authenticity (the client is sure to talk to the intended server) but not non-repudiation (the client cannot record the session and show it as proof, in case of a legal dispute with the server, because it would be easy to build a totally fake session record).
What’s the difference between authentication and non repudiation?
Non-repudiation is a legal concept: e.g., it can only be solved through legal and social processes (possibly aided by technology). Some people have been taught that non-repudiation can be provided through crypto-mathematics alone. However, that is not correct. Why would you want authentication?