For the past many months I have been meeting almost bi-weekly with a small group to study the book of Matthew. We started in Jan 2012, and as of the end of May of 2013, we’ve made it through chapter 21. At our last meeting, I had an epiphany: if the gospels were written today, […]
There is a new Stack Exchange site called “Christianity” now active. I’m user 69.
As is often the case with a first attempt, improvements need to be made. My Wolf1 (reference) one-way hashing algorithm, while operational, does not avalanche as well as it should: one-bit changes to the source being hashed are not creating vastly different outcomes. I’m reworking the Wolf1 process into a new version, and will post […]
My title today is a compact pair of acronyms. From a presentation I saw this week on WalMart’s investments in RFID (radio frequency identification) technologies as a cost-savings measure, they expect to be able to save around $6.7b dollars annually in salary expenditures by moving to RFID tags and scanners to reduce theft and ease […]
Haha! My roommate pointed out on Saturday that a bit-wise rotation is just like shifting a value X bits, and or-ing it with the same value shifted the opposite direction (word size)-X bits. For example: A = (A << 7) | (a >> 25) for a 32-bit variable. This means I can, in fact, perform […]
I have been working on finishing the imlpementation of my first one-way hash algorithm, named Wolf1. Over the weekend, I devised a second algorithm, aptly named Wolf2, which will be debuting on my website at the same time Wolf1 appears. The general form for Wolf1 is as follows: Wolf1 is a 256-bit one-way hash algorithm, […]
Last night I went through Knuth’s books and converted some of the provided constants into hexadecimal values. I then snagged 32 32-bit numbers and have used them as the initial constants in my new hash algorithm. Wolf1 provides a 256-bit signature, after performing several cascading and avalanching activities on the blocks read in. These operations […]
In speaking with one of my professors this afternoon, and in re-reading the one-way hash chapter in Bruce Schneier’s excellent book Applied Cryptography, I’ve discovered that the only reasonable way of writing my hashing algorithm is to stick to chunks that are register-sized, or at most the size of all of the available registers (4 […]
I have been working on several one-way hash algorithms over the past couple weeks. None of them have yet reached the stage of ‘wow this really looks cool’, but the most recent iteration has gotten me pretty close. Now I’m looking at how to implement it in software. The algorithm I designed can create any […]