Let me be precise. In my token extension when I get a call to sign - (nullable NSData *)tokenSession:(TKTokenSession *)session signData:(NSData *)dataToSign and I call SecKeyCreateSignature() func to get signature it again calls above tokenSession function. Is this right behaviour?

@c_d_ Any luck in implementing the token extension. I am trying the same and facing some issues. Just want to check whether you have got any success..