Collaborate Disseminate
Quantum computing poses a great opportunity but also a great threat to internet security; certain mathematical problems that form the basis of today’s most popular cryptographic algorithms will be much easier to solve with quantum than with “classical”… Continue reading Chinese researchers: RSA is breakable. Others: Do not panic!
I’m trying to develop a way to send encrypted strings over Internet Relay Chat with RSA in Go.
So far I have developed this code to send the encrypted string over IRC.
package main
import (
"crypto/rand"
"cr… Continue reading RSA encrypted communication over IRC
Tell us in the comments… What’s the REAL reason there was no Windows 9? (No theory too far-fetched!) Continue reading S3 Ep117: The crypto crisis that wasn’t (and farewell forever to Win 7) [Audio + Text]
I’m working on a system that shares data between a client and server.
The end goal of this system is to store server-encrypted data on the client’s hard drive, using keys generated by the server. the client needs copies of the keys so tha… Continue reading Best practice for sharing and storing encrypted data between server and client
A group of Chinese researchers have just published a paper claiming that they can—although they have not yet done so—break 2048-bit RSA. This is something to take seriously. It might not be correct, but it’s not obviously wrong.
We have long known from Shor’s algorithm that factoring with a quantum computer is easy. But it takes a big quantum computer, on the orders of millions of qbits, to factor anything resembling the key sizes we use today. What the researchers have done is combine classical lattice reduction factoring techniques with a quantum approximate optimization algorithm. This means that they only need a quantum computer with 372 qbits, which is well within what’s possible today. (The …
I have a server-side app in a Docker container that communicates with my desktop client app.
I am struggling with how to ensure that the response from the server is trustworthy. I am fairly new to working with RSA key pairs and establishin… Continue reading When signing with server public key, how do I prove server key is trustworthy?
I am encrypting chat messages with RSA thus speed is no issue.
It was working fine before I tried transmitting a long message.
Now I need to cope with the fact RSA is block, instead of stream, based. Easy: chop the bytes into smaller packe… Continue reading What makes chopping RSA payloads into constant size chunks unsafe?
Short story…
IBM(now HCL) Domino have since way back a complete procedure to issue X509 client certificate as a login option to webserver. Back in 2010-ish it worked fine in both Firefox and Internet Explorer. The handling has 4 steps
A… Continue reading X509 Client certificate – before – XEnroll / Certenroll / KEYGEN
I have a web application created with Flask in python that uses asymmetric encryption using RSA, the private key is generated from the user’s password and is only stored in a cookie on the user’s device, so even I as the person who has acc… Continue reading Asymmetric encryption and data sharing
I have a 1024-bits modulus n, I have the key d which is 1022 bit long, public exponent 65537, two factor p and q, and the ciphertext y 1023 bits which is all in numbers, how can we perform decryption and work out the plaintext? I have trie… Continue reading Decrypting RSA with the key [migrated]