Numeric message transmitting method for chip card, involves decrypting cryptogram obtained by encrypting message, using private key by executing multiplication,where message is encrypted and decrypted by modified kiayas and yung algorithm

摘要

The method involves encrypting a numeric message by an encrypting electronic module using a public key for obtaining a cryptogram, where the cryptogram comprises specified components. The cryptogram is decrypted by a decrypting electronic module using a private key by executing a modular multiplication, where the message is encrypted and decrypted using a modified kiayas and yung algorithm. The public and private keys are contained within each pre-registered memory.