Collaborate Disseminate
i have phi,N and ciphertext. But the phi is calculated with phi=(p+1)(q+1) . I normally calculate d but cannot recover message
Continue reading RSA problem with unconventional calculation of phi [migrated]
At a brunch roundtable, one of the many informal events held during the RSA Conference 2024 (RSAC), the conversation turned to the most popular trends and themes at this year’s events. There was no disagreement in what people presenting sessions or companies on the Expo show floor were talking about: RSAC 2024 is all about […]
The post Overheard at RSA Conference 2024: Top trends cybersecurity experts are talking about appeared first on Security Intelligence.
I’m working on an application where encrypted data can be stored on the server. Users can do this by obtaining public keys from the server, and use them to encrypt data locally before sending it to the server. This encryption feature provi… Continue reading How to allow users to securely use their private key to decrypt data in the browser [duplicate]
I’m a beginner in cryptography and for my first project I use the client’s password to encrypt some data. More specifically, I use the password as passphrase in RSA private key generation). However, I do not want to trust the server when s… Continue reading Hide password from server
Secretary of State Antony Blinken points to the response to Russia’s invasion of Ukraine as a model of nimble tech diplomacy.
The post State Department wants ‘digital solidarity’ at center of tech diplomacy appeared first on CyberScoop.
Continue reading State Department wants ‘digital solidarity’ at center of tech diplomacy
I read this answer Ransomware encryption keys and understood how wannacry works. But I still have a question: as I understand, the hacker will put the hacker’s RSA public key in the malware, the victim machine will randomly generate an AES… Continue reading Why Ransomware generate keypair in victim?
I need to establish a secure method for transmitting shared secret keys between a mobile app and an API server to ensure the integrity of the data.
When initially exchanging shared secret keys, I’am employ X25519. However, if a previously … Continue reading Secure Transmission of Secret Keys Between Mobile App and API Server
I downloaded an application, based on electron. I then decompiled the app.asar file. And I found two strange files: "server.cert" and "server.key".
The private RSA key corresponds to the certificate.
I was wondering wha… Continue reading Why does this application include a private RSA key?
User Crover has given a very great explanation for this question:
RSA or ECDHE for x.509 certificates-what does each do?
I have one question to Crover and/or any other member.
What I understand from the Crover’s answer, if client (a Web Br… Continue reading Web Browser and server using ECDHE_RSA cypher suite, then what is the use of X.509 certificate public key for?
We don’t have a useful quantum computer yet, but we do have quantum algorithms. Shor’s algorithm has the potential to factor large numbers faster than otherwise possible, which—if the run times are actually feasible—could break both the RSA and Diffie-Hellman public-key algorithms.
Now, computer scientist Oded Regev has a significant speed-up to Shor’s algorithm, at the cost of more storage.
Details are in this article. Here’s the result:
The improvement was profound. The number of elementary logical steps in the quantum part of Regev’s algorithm is proportional to …