I am writing an API for a payment system. Third parties can register callback URLs that are linked to an account ID so that whenever a transaction involving that account ID is updated, my API calls ...

We're building an application that needs to log into a website using built-in credentials. It's not optimal to say the least, but we're stuck with "knowing" the username and password ...

I am familiar with and see the benefits of Subresource Integrity (SRI).I understand that with SRI, once you've added a script reference with the correct integrity attribute, if the remote script is ...

Regarding cryptography and the issue of collisions, I posed a question as to whether it was ever possible to store every single possible combination of a bit array of a particular size, in a bit array ...

BackgroundTertiary to this question, I have been building my own imageboard that prevents [for example] duplicate images from being downloaded again and again on behalf of the client. How I do this, ...

I have a set of UUIDs that I want to assign to a set of people. I want to deliver these UUIDs to people in a secure manner, such that everyone knows that I do not know which UUID corresponds to which ...

Now that Tesla has bought a large amount of BitCoin, other companies may follow suit. If my company wanted to do that, I was thinking about how it could be done.I'm familiar with the way private ...

I am currently building a small application which used a public API to get some information. The API doesn't support auto-login in any way (don't know if something like this even exists with APIs), ...

I was wondering if there was a way to encode binary data, such as Crypto addresses into a natural language format, in a similar fashion to how what3words.com can encode locations into three easy-to-...

I am planning to implement a cryptographic library for several languages and looking for best practices. I have looked at several threads, especially this, this, and this one, which answer my ...

I'm just reviewing some of my code and thought I'd throw this out there for comment.I have a factory class that builds and returns a class for RSA Crypto tasks. It implements IDisposable. All the ...

I am starting to look into how to implement SHA256 in JavaScript, and found this for example. It requires UTF-8 encoding it sounds like. Another one I saw required/supported only ASCII encoding and ...

I am looking at all the green and red boxes here, and am wondering what it would look like if one were to "implement TLS" today? What should you implement if you were to implement TLS today?Do you ...

Despite various ways to scrub sensitive data in volatile memory (see Survive DSE or Zeroing buffers), programs tend to perform transparent memory copies (such as a Garbage Collection). The newly ...

A PHP based webshop running on a shared hosting stores libsodium encrypted personal data in it's MySQL database. To let users have access to their own data, a design very similar to the one discussed ...