def compute_cryptographic_checksum(self, p1, p2, data):
checksum = eac.EAC_authenticate(self.eac_ctx, data)
if not checksum:
eac.print_ossl_err()
raise SwError(SW["ERR_NOINFO69"])
return checksum
def authenticate(self, data):
"""Compute a MAC for block of data using the secret established by the
PACE protocol. This method can only be used after a successful run of
eac.
"""
auth = eac.EAC_authenticate(self.ctx, data)
if not auth or not eac.EAC_increment_ssc(self.ctx):
raise PACEException("Failed to compute MAC for: " + data)
return auth