def decipher(self, p1, p2, data):
plain = eac.EAC_decrypt(self.eac_ctx, data)
if not plain:
eac.print_ossl_err()
raise SwError(SW["ERR_NOINFO69"])
return plain
def decrypt(self, data):
"""Decrypt a block of data using the secret established by the PACE
protocol. This method can only be used after a successful run of eac.
"""
dec = eac.EAC_decrypt(self.ctx, data)
if not dec or not eac.EAC_increment_ssc(self.ctx):
raise PACEException("Failed to decrypt the following data: " +
data)
return dec