I will show how to attack RSA, if two private keys share a same factor . This is the solution of an exercice - We had to decrypt a message given the ciphertext (encrypted message) and two public RSA keys (where a common factor was used to generate them).

I found a nice tool wich provides a command line interface for basic operations on csv files. It supports joins, filters and a lot of other things.

I had to decrypt a weak RSA encrypted message. Why weak? Because a (only) 268-bit key was used for encryption. So RSA is not bad, but please use a suitable key size.

It's some kind of *best practice* to use virtual envoronments to isolate project specific dependencies in python. There are various tools with (nearly) the same functionality, but pyenv is the official one since Python 3.3. Although ...