3 ms·
Once you can encode the voice characteristics to match it, then go to the next level and generate the voice so that it sounds like that person. That might be in
by rdtsc 9y ago
Once you can encode the voice characteristics to match it, then go to the next level and generate the voice so that it sounds like that person. That might be interesting in breaking ZRTP protocol which relies on verbally comparing codes both sides see on their ends.
https://en.wikipedia.org/wiki/ZRTP https://en.wikipedia.org/wiki/ZRTP
So when Alice calls Bob and they verify the code, she sees "123" and says "123". Eve captures "123" then used Alice's generated voice and tells Bob the code is "456". Then does the same for Bob's side. Now, Alice and Bob if they are suspicious they can try to repeat the code a few times, maybe grouping digits differently.
- lallysingh 9y agoDo it over video.
- prutschman 9y agohttps://www.youtube.com/watch?v=BoncWqttN6U https://www.youtube.com/watch?v=BoncWqttN6U I can only imagine it's gotten better in the past 20 years.
- lallysingh 9y agoThis is probably the state of the art: https://www.youtube.com/watch?v=9Yq67CjDqvw https://www.youtube.com/watch?v=9Yq67CjDqvw But still easy to tell if it's someone you know, and try to have a regular conversation while doing the video chat.
- rahimnathwani 9y agoAccording to Wikipedia "In late 2006 the US NSA developed an experimental voice analysis and synthesis system to defeat this protection"
- rdtsc 9y agoYap they tried but it was experimental. They want something practical. Well they might have solved the problem but I kind of doubt it. Notice that instead of a number it could be a set of random dictionary words. So instead of 123 they get "potato airplane". Now Alice and Bob start making jokes or comments about how silly that sounds and how far potato airplanes could fly etc. Now the problem of simply transcribing individual numbers got many times more complicated.