Collaborate Disseminate
If you look at the above Kerberos protocol’s diagram, you can find that the protocol works on the basis that the (symmetric) client key initially exists on both the client node and the key distribution center.
Then, the question is, how c… Continue reading How can a client safely post/get a (symmetric) client key to/from a key distribution center?
I was watching this video explaining how tor works: https://youtu.be/QRYzre4bf7I
It explains it with the example of 3 intermediate nodes between client and server. It says that each of the nodes can only decrypt one layer and therefore onl… Continue reading How does Tor’s second node know the key to decrypt the second layer?
First, I realize trying to come up with your own crypto schemes is not a good idea. I’m a relatively new member of a team of developers utilizing such a custom scheme and I’m trying to come up with arguments to argue against that policy.
T… Continue reading Diffie Hellman with server public key embedded on the client
I have a bit of doubt in a scenario that, AWS started allowing Ed2551 SSH keys somewhat recently. I also see a bit of a debate about the security of one other. Could anyone advise on which we should use going forward or which is best?
I have some confusion between the different public and private keys that are used in a TLS 1.3 connection. When a client makes a request to a server, I’ve always thought that a server’s TLS x509 certificate was passed to the client and cer… Continue reading TLS 1.3 RSA key exchange
The following scenario:
We have a HTTP (not HTTPS, so unencrypted) server which contains an open (RSA) public key. The general sharing of the public key should not be a problem since it is the public key. My concerns are more about a MITM … Continue reading Is it secure to share a public (RSA) key over http?
When someone uses a browser to connect to https://google.com via Tor network, the client needs to exchange a key with Google in order to keep all the data hidden from the exit node, right? Otherwise, when the exit node unencrypts the messa… Continue reading How client and server exchanges keys over Tor network using HTTPS? [duplicate]
When a client connects to a router (standard home router) how is the key distributed to the client? If the key is sent across the network, can not someone sniff and see the key? If the key is not sent across the network, is it generated vi… Continue reading How do Routers share a key when using Symmetric Cryptography?
I’m working on a cloud synced feature for my notes based on this article
I try to share my git-crypt-key between my devices (my PC and my laptop) in order to decrypt my remote GitHub repo where my notes are stored.
For this, I’m trying usi… Continue reading Share file between different local machine using scp cmd
Is it possible to use HKDF in the TPM? My goal is to load in a master symmetric key and derive keys from that using HKDF. I see there are other KDF functions available, but no mention of HKDF.