Collaborate Disseminate
I’m designing an application with Security in mind. I’ve read up on Asymmetric, Symmetric and Signature keys, and have a few questions I can’t seem to find answers to.
Here are some of the assumptions I’ve made based on my readings:
For p… Continue reading Key Storage and Implementation for Web App
I need to gather some sensitive information on a public channel where people don’t trust each other, and my plan is to use asymmetric encryption: I generate a key pair, post the public key to the channel, other members encrypt their inform… Continue reading Offline alternatives for "PGP Encryption Freeware"?
I have a website in a shared hosting environment, and I’m also planning to back up in multiple locations. All of that introduces vulnerability where the data could get intercepted, stolen, or misused by authorized parties. The data isn’t a… Continue reading Getting Smaller Output From Public Key Cryptography In PHP
I am interested in the issue of establishing the security of data of users of a web application in the event of a database leak.
It was decided to use the following encryption chain:
User data is encrypted with a user symmetric key (AES)
… Continue reading How can I improve the application administrator’s encryption keys security inside database
Academia has had some high profile cases of forged identity; for instance, in the last decade the publisher Springer has had to retract 62 papers for this reason alone.
Usually these aren’t high-effort attacks, just email address spoofing,… Continue reading How best to cryptographically sign scientific papers? [closed]
I want to implement simple software protection mechanism. This is how it would look like:
My question is – is there any problem for me using the private key for encryption and public for decryption (since usually it is other way around)?
… Continue reading Using Private Key for encryption
Here is how integritysetup from the cryptsetup package in Linux works. A user provides an authentication key to the OS when reading or writing data to a file system. When reading, the OS only returns a data block if it was written with the… Continue reading asymmetric file system authentication
I am using a syymetric token, a fernet from the python cryptography module. I am trying to make it such that a terminal logs into a website automatically.
I store the serial number and mac address of the terminal.
The terminal authenticate… Continue reading Is it insecure to encrypt a message with a key thats almost the same as the message
I have somebody’s public PGP key imported on my laptop (Debian Linux), but not their private key. When I encrypt a file to them using their public key, I can then decrypt it again even though I don’t have their private key. Through exper… Continue reading Enlighten Me Please Regarding PGP Encryption
Question
I would like to asymmetrically encrypt messages with a public key that I have been given in advance. How can I go about doing that? Some example code in C# would be much appreciated.
What do I need it for?
Our service receives SMS… Continue reading How do I do asymmetric/hybrid encryption in practice?