LocalRSAExpert

> RSA (Rivest–Shamir–Adleman) algorithm is an asymmetric cryptographic algorithm that is widely used in the modern public-key cryptosystems.

The very definition of modern public-key crypto is that it doesn't use RSA :)

> Cracking the RSA encryption system using brute force is not practically feasible.

Cracking the RSA encryption system as implemented by someone reading a lecture like this is straightforward. Heck, "padding" doesn't even appear in it, most university slides at least mention "oh by the way, this thing's pretty useless without padding".

In my opinion this article falls squarely in the "talking about RSA considered harmful" category: showing textbook RSA, then saying it [RSA] is secure, without mentioning how hard it actually is to achieve that.

Yes, between 100 GB and 1 TB of private key does it.