The "get challenge" apdu, 0x84, normally returns a random number. I once
collected 160 bytes from a Payflex P1 card and ran some simple tests. I
don't know how the rng is implemented in Payflex, and it's probably a highly
guarded secret.
If anyone wants to run some tests, the bits are
What was your "simple tests"? Did you find any tendencies? Or is
that a secret?
The "get challenge" apdu, 0x84, normally returns a random number. I once
collected 160 bytes from a Payflex P1 card and ran some simple tests. I
don't know how the rng is implemented in Payflex, and it's
