Collaborate Disseminate
By Deeba Ahmed
LummaC2 is back as LummaC2 v4.0.
This is a post from HackRead.com Read the original post: LummaC2 v4.0 Malware Stealing Data with Trigonometry to Detect Human Users
Continue reading LummaC2 v4.0 Malware Stealing Data with Trigonometry to Detect Human Users
An interesting aspect of time-varying waveforms is that by using a trick called a Fourier Transform (FT), they can be represented as the sum of their underlying frequencies. This mathematical …read more Continue reading The Fastest Fourier Transform in the West
In this day and age where a megabyte of memory isn’t a big deal, it is hard to recall when you had to conserve every byte of memory. If you are a student of such things, you might enjoy an annotated view of the Apollo 11 DSKY sine and cosine …read more
Even with ten fingers to work with, math can be hard. Microprocessors, with the silicon equivalent of just two fingers, can have an even harder time with calculations, often taking multiple machine cycles to figure out something as simple as pi. And so 40 years ago, Intel decided to give …read more
Continue reading Looking for Pi in the 8087 Math Coprocessor Chip
We are always excited when we see [Hamster] post an FPGA project, because it is usually something good. His latest post doesn’t disappoint and shows how he uses the CORDIC algorithm to generate very precise sine and cosine waves in VHDL. CORDIC (Coordinate Rotation Digital Computer; sometimes known as Volder’s algorithm) is a standard way to compute hyperbolic and trigonometric functions. What’s nice is that the algorithm only requires addition, subtraction, bit shifts, and a lookup table with an entry for each bit of precision you want. Of course, if you have addition and negative numbers, you already have subtraction. …read more