This has been a hell of a year. On a personal level, a lot went right for me. I went to Italy, London and Amsterdam for my honeymoon. I started a new job teaching at Dev Bootcamp. Which represents my first real foray into entrepreneurship. On a larger scale, societally and culturally, things were a lot worse.

A Few Thoughts on Cryptographic Engineering. Some random thoughts about crypto. Notes from a course I teach. In my research I look at the various ways cryptography can be used to promote user privacy.

Computer science, math, programming and other stuff. A blog by Christopher Swenson. 64-bit assembly language programming under macOS with NASM. Just a quick follow-up to a previous post on 32-bit assembly language programming for OS X. The biggest change is that the calling convention now uses registers instead of the stack by default.

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Hooked on Mnemonics Worked for Me. A Primer on Cracking XOR Encoded Executables. This is not very difficult because XOR is not a secure cipher and when used on a portable executable file a padding attack. To recover the key size Hamming distance. Here is the code for computing the hamming distance. Note, the two strings must have the same size.