Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Help with ECDSA (crypto)

  1. Feb 10, 2006 #1
    Hi, I know next to nothing about the mathematical aspects of ECDSA, this kind of stuff is way beyond me, yet at my job, I'm tasked with a certain problem. I am given a set of inputs to an ECDSA signature verification function. I know that one of the paramters that I need is a point on the curve, but I am given the point as a seperate X and Y value, how do I combine that to make a single point? I'm using K-163 as the key size. So the length of the point should be 21 bytes. I am given two 22 byte values (extra byte due to a leading '0' and so not important). Can I just XOR the two values?
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted