On: Announcing the first SHA-1 collision

[matt4077]

Brute-forcing bitcoin addresses is not in "economically senseless" category. It's in "even if every atom in the universe were part of a CPU..."

[juhanima → matt4077]

That's right. The numbers above are in the vicinity of 2^60. A typical ECC keylenght is 256 bits, and all numbers in that space are equally good secret keys. The remaining almost 200 bits still present something of an obstacle.