6 ms·
For mobile payment, the SIM acts as a means to sign messages in a way that is difficult to spoof, as you cannot directly access the cryptographic key on it. Thi
by jimktrains2 5y ago
For mobile payment, the SIM acts as a means to sign messages in a way that is difficult to spoof, as you cannot directly access the cryptographic key on it. This existed and worked long before secure elements or TPUs were on the scene.