Now I’d love to show you how SRP works step by step in 1Password. So that’s four layers of protection: 1Password account password, Secret Key, SRP, and TLS. As an added bonus, because SRP is encryption-based, we end up with a session encryption key we can use for transport security (the fourth layer) instead of relying on just Transport Layer Security (TLS). You actually end up with an encryption key.Īll this makes SRP a great fit for 1Password, and it keeps your data safe in transit. authenticate with more than just a binary “yes” or “no”.authenticate both the identity of the client and the server to guarantee that a client isn’t communicating with an impostor server.authenticate without the risk of anyone learning any of your secrets – even if they intercept your communication.authenticate without ever sending a password over the network.Now, that may not sound very interesting – and I’m not one to show excitement easily – but SRP is a hell of a layer. SRP is a handshake protocol that makes multiple requests and responses between the client and the server. (Apparently the marketing department of augmented password-authenticated key agreement protocols is underfunded.) But we eventually found SRP, which ticked all our boxes. It took us a while to find what we needed for this layer. Secure Remote Password: a hell of a layer We know better than to roll our own crypto, and we wanted to find a proven solution that’s been around and has stood the test of time. There was actually one other requirement that wasn’t exactly part of the list but applied to every item in the list: we didn’t want to roll our own solution. the authentication is encryption-based.the identity of user and server are mutually authenticated.eavesdroppers can’t learn anything useful.your 1Password account password is never transmitted or stored on the server.When we first started planning how we were going to securely authenticate between 1Password clients and server, we had a wish list. Thanks to your Secret Key, even if someone got your data from our servers, it would be infeasible to guess your account password. It combines your Secret Key with your 1Password account password to greatly improve the strength of the encryption. The second layer is something we call Two-Secret Key Derivation. The first layer of security in 1Password, your account password, protects your data end to end – at rest and in transit – but we wanted to go further.
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