Collaborate Disseminate
The NSA has released a security advisory warning of the dangers of TLS inspection: Transport Layer Security Inspection (TLSI), also known as TLS break and inspect, is a security process that allows enterprises to decrypt traffic, inspect the decrypted … Continue reading The NSA Warns of TLS Inspection
This question already has an answer here:
How to determine what type of encoding/encryption has been used?
8 answers
Is t… Continue reading determine type of encoding/encryption [duplicate]
This theoretical paper shows how to factor 2048-bit RSA moduli with a 20-million qubit quantum computer in eight hours. It’s interesting work, but I don’t want overstate the risk. We know from Shor’s Algorithm that both factoring and discrete logs are … Continue reading Factoring 2048-bit Numbers Using 20 Million Qubits
This theoretical paper shows how to factor 2048-bit RSA moduli with a 20-million qubit quantum computer in eight hours. It’s interesting work, but I don’t want overstate the risk. We know from Shor’s Algorithm that both factoring and discrete logs are easy to solve on a large, working quantum computer. Both of those are currently beyond our technological abilities. We… Continue reading Factoring 2048-bit Numbers Using 20 Million Qubits
In 1999, I invented the Solitaire encryption algorithm, designed to manually encrypt data using a deck of cards. It was written into the plot of Neal Stephenson’s novel Cryptonomicon, and I even wrote an afterward to the book describing the cipher. I d… Continue reading More Cryptanalysis of Solitaire
In 1999, I invented the Solitaire encryption algorithm, designed to manually encrypt data using a deck of cards. It was written into the plot of Neal Stephenson’s novel Cryptonomicon, and I even wrote an afterward to the book describing the cipher. I don’t talk about it much, mostly because I made a dumb mistake that resulted in the algorithm not… Continue reading More Cryptanalysis of Solitaire
Earlier this month, I made fun of a company called Crown Sterling, for…for…for being a company that deserves being made fun of. This morning, the company announced that they "decrypted two 256-bit asymmetric public keys in approximately 50 seconds from a standard laptop computer." Really. They did. This keylength is so small it has never been considered secure. It was… Continue reading Crown Sterling Claims to Factor RSA Keylengths First Factored Twenty Years Ago
Given one or two sequential Math.random outputs generated with Internet Explorer’s linear congruential generator, is it possible to find the seed used in the LCG and find subsequent outputs? Here is the code given on the repo… Continue reading Find seed used in Math.random LCG given a list of outputs
How can I get started on understanding how to decipher this ciphertext when I don’t know the algorithm or key used?
TDcbY xqCa NeAA OsWMirK FNFOm bYRUYAkxl, tqwl axZU XTaLrBSFv OI G vWjBZyqhz.
SUze pGUqZi fCxHFbaIK QnY n… Continue reading Deciphering ciphertext with an unknown key and algorithm [on hold]
A weird paper was posted on the Cryptology ePrint Archive (working link is via the Wayback Machine), claiming an attack against the NSA-designed cipher SIMON. You can read some commentary about it here. Basically, the authors claimed an attack so devastating that they would only publish a zero-knowledge proof of their attack. Which they didn’t. Nor did they publish anything… Continue reading Cryptanalysis of SIMON-32/64