Questions tagged [quantum-computing]
refers to hardware and software of quantum computers, and what their capabilities will be. For protecting your data against a quantum attacker, see [post-quantum].
30 questions
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What are some reliable and well-maintained Post-Quantum Cryptography (PQC) libraries with Go support? [closed]
I am looking for reputable libraries or solution providers that offer reliable, well-maintained, and well-documented implementations of post-quantum cryptographic (PQC) algorithms. Specifically, I am ...
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4 votes
1 answer
1k views
Does it make sense to disallow SHA-224 and SHA-256 to defend against quantum computers?
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 ...
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1 vote
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Detecting “Harvest Now, Decrypt Later” Attacks Using AI/ML Models
I’m researching strategies to detect the “Harvest Now, Decrypt Later” attack, also known as “store now, decrypt later” or “retrospective decryption.” This surveillance approach involves acquiring and ...
1 vote
0 answers
108 views
Monitoring QKD system with EDR Wazuh
I’m trying to do my thesis project about the possibility to prevent attacks against QKD devices, using an EDR like Wazuh. The problem is that most attacks are prevented through physical methods ...
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0 votes
1 answer
479 views
Could Quantum Computers Quickly Crack Ransomware Encryption?
I've heard that quantum computers may soon be powerful enough to crack standard encryption. If this is true, could we potentially harness them to end ransomware? Instead of paying the ransom or coming ...
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1 vote
1 answer
242 views
Will the public-key cryptosystem change in a post-quantum state?
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 ...
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1 vote
3 answers
2k views
Why are we using RSA although it will be cracked by quantum computers?
Why do we still use RSA 2048 when we know that quantum computers can crack RSA as fast as classical computers can create the key? Providers, governments, APTs, etc. can sniff all the traffic and as ...
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0 votes
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28 views
How likely is it that publicly available data will be decrypted in the future? [duplicate]
As we already know, with the rising power of machines and new technologies like quantum computers today's methods of encryption might be much faster to crack in the future. With locally saved data you ...
1 vote
1 answer
4k views
Password cracking using Quantum Computers
Suppose that I have a password that is n-digits long. Each digit can take m values. So the number of permutations will be m^n. I wanted to know how much time it would take a quantum computer to crack ...
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37 votes
2 answers
11k views
When could 256 bit encryption be brute forced?
Assuming quantum computing continues to improve and continues to perform like this: ... quantum computer completes 2.5-billion-year task in minutes is it reasonable to expect that 256 bit encryption ...
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-1 votes
1 answer
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Doesn't Hashing Negate Quantum Computer Cracking?
I've read/watched a lot about Quantum Computers, trying to really get into the physics of it. Seems like the topic is poorly explained. I do understand that it takes a lot of qbits to beat modern ...
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-1 votes
1 answer
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Fuzzing with a Quantum computer? [closed]
Are there any projects, solutions, ideas where it is possible to fuzz a software: https://en.wikipedia.org/wiki/Fuzzing using quantum computers, quantum programming? https://en.wikipedia.org/wiki/...
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12 votes
2 answers
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What SSH keys should I generate with ssh-keygen to be safe in a quantum computer based world?
What SSH keys should I generate with ssh-keygen to be safe in a quantum computer based world?
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4 votes
1 answer
655 views
What happens to PKI once quantum computers can break encryption?
They say that public key infrastructure or PKI uses very complex encryption. What if that encryption breaks one day when quantum computers complete? What if they decrypt all private messages and data? ...
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1 vote
1 answer
194 views
Size of a secure random number taking into account quantum computing and size of universe
Most random secure numbers are 256 to 512 bits. But given the size of the universe and eventually quantum computing, I am wondering what is a better sized randomly generated number, taking into ...
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