[F1CSM_174 Upon receiving the VU’s signature in an EXTERNAL AUTHENTICATE command, the card shall U.K.
Calculate the authentication token by concatenating Card.CHR, the card challenge rcard and the identifier of the VU ephemeral public key Comp(VU.PKeph),
Verify the VU’s signature using the ECDSA algorithm, using the hashing algorithm linked to the key size of the VU’s VU_MA key pair as specified in CSM_50, in combination with VU.PK and the calculated authentication token.]
Textual Amendments