Collaborate Disseminate
From Australia’s Guidelines for Cryptography:
For most purposes, a hashing algorithm with an output size of 224 bits provides 112 bits of effective security strength, with larger output sizes providing more bits of effective security stre… Continue reading Does it make sense to disallow SHA-224 and SHA-256 to defend against quantum computers?
I’m working on designing a VPN that is post-quantum safe while avoiding detection that it uses post-quantum cryptography. The goal is to make the use of post-quantum cryptography indistinguishable to an eavesdropper, who might otherwise st… Continue reading Is a Three-Layer Post-Quantum Safe VPN Hidden Within Regular IPsec Effective Against Eavesdroppers?
I know this might sound counter-intuitive, but is it possible to configure gpg to store public keys in encrypted state on disks? Such that when encrypting a message to someone, user would be asked to first enter a passphrase to decrypt rec… Continue reading Does gpg support storing public keys in encrypted state?
If we talk about the security of public key encryption in Regev’s lwe system, if attacker would have knowledge of (u,u’)[u=Ar, u’=b^tr + µ q/2, r={0,1}^m] and b, then value of r in u’ can be guessed easily by the knowledge of u and A and s… Continue reading Regev’s learning with error [migrated]
I wrote an article on the impacts of sufficiently capable quantum computers on password strength and attacks.
The basic premise is that Grover’s algorithm halves the protective strength of password hashes and passwords, plus any additional… Continue reading Impact of quantum computers on password security [closed]
I would like to preface this with the information that I am clearly not well versed in crypto, so my understand so far may not be accurate.
CISA recently published an advisory Preparing Critical Infrastructure for Post-Quantum Cryptography… Continue reading Will the public-key cryptosystem change in a post-quantum state?
I already have experience with quantum computing and the mathematics behind it. I also know the quantum cryptography side e.g. BB84, etc.
I now want to move on to post-quantum cryptography and am therefore looking for suitable sources. Fav… Continue reading Sources for post quantum cryptography [migrated]
When quantum computing breaks through and is able to solve Shor’s algorithm in something more reasonable than 320,000 years, blockchain is in serious trouble.
For identities, would something like Key Event Receipt Infrastructure (KERI), be… Continue reading Quantum proofing blockchain with KERI? [closed]
The NATO Cyber Security Centre (NCSC) has successfully tested secure communication flows in a post-quantum world using a Virtual Private Network (VPN) provided by the United Kingdom-based company Post-Quantum. The NATO Cyber Security Centre, which is r… Continue reading Post-Quantum secures NATO’s communications for the quantum era
This thread is for how ssh-keygen relates to quantum computing attacks.
What are the strengths and weaknesses of the ssh-keygen algorithms as related to quantum computing, which from my understanding will be able to potentially crack them … Continue reading What ssh-keygen algorithm, or solutions, may be short-term future-proof effective for quantum computing attacks? [closed]