I just read the Wikipedia page on the Digital Signature Algorithm here: https://en.wikipedia.org/wiki/Digital_Signature_Algorithm Is the signing algorithm explained on the page the one that is used by most Certificate Authorities to sign TLS certificates? And is the verification algorithm explain...

I've been thinking about the following problem and haven't yet found a solution. We have an arbitrary and public hash function $\text{Hash}$. Could I possibly publish a function $F$ (that is, publish an algorithm that returns $F(M)$ given $M$) such that $F(M)=K$ whenever $\text{Hash}(M)=0$, wher...

I'm trying to rebuild AES-CTR mode and have some questions concerning the generation of the nounce. I've comonly seen the nonce be distributed like this $Nonce_{128\,bits} = IV_{64\,bits} \mathbin\Vert Counter_{64\,bits}$ where the IV is randomly generated foreach message and the Counter incremen...