Collaborate Disseminate
I’m trying to understand the concept of ephemeral session keys as it pertains to perfect forward secrecy. There’s an example I wasn’t sure if.
Let’s say I have a webpage served over TLS at the url https://acmecorp.com. The webpage has 5 … Continue reading How many ephemeral session keys made when loading web page
I have a textbook that contains the following problem:
In practice, one master key, KM, is exchanged in a secure way (e.g. Diffie-Hellman key exchange) between the involved parties. Afterwards, session keys, kx, are regularly updated by u… Continue reading Is This Perfect Forward Secrecy?
I recently heard about the Nym mixnet and am researching it and the Sphinx packet format. So far it looks promising, but there is one thing I’m unsure of.
Networks like Tor use ephemeral keys to limit the length of time an adversary could … Continue reading Nym Perfect Forward Secrecy
Wikipedia states that Perfect Forward Secrecy “is a feature of specific key agreement protocols that gives assurances that session keys will not be compromised even if the private key of the server is compromised”.
In the example on Wikip… Continue reading In which sense is Perfect Forward Secrecy perfect? [duplicate]
This question already has an answer here:
What to transfer? Password or its hash?
4 answers
https security – should passwor… Continue reading Is client-side password hashing still useful when using TLS? Is TLS crackable? What about PFS? [duplicate]
This question already has an answer here:
What to transfer? Password or its hash?
4 answers
https security – should passwor… Continue reading Is client-side password hashing still useful when using TLS? Is TLS crackable? What about PFS? [duplicate]
This question already has an answer here:
When is an RSA key used in TLS handshake?
1 answer
What is the role of RSA in ECD… Continue reading Is the server’s private key needed in the Diffie Hellman key exchange? [duplicate]
Recently, I had an OpenVAS scan report that a TLS connection to Postfix used a temporary key size of 2040 bits, instead of the 2048 bits that I have set for my key size, and I have perfect forward secrecy cipher suites enable… Continue reading OpenSSL – 2040 bit temporary key size, 2048 bit private key
I have read multiple sites online about PFS and DH but I still have a few questions.
I understand that in order to have PFS you must use different keys to encrypt messages. So your IM client could be generating a new key for… Continue reading Perfect forward secrecy in Instant Messaging with multiple devices
I know “How TLS works” has been discussed numerous times here and crypto, but I am still somewhat confused and would like to summarize what I know so far 1 in this giant blob of text with the hope that one day this becomes he… Continue reading How does TLS work (RSA, Diffie-Hellman, PFS)?