HYBRID CRYPTOGRAPHIC APPROACH TO MOBILE MESSAGING

摘要

Secure Mobile Messaging via secure, trusted and secure, or trusted message is disclosed. Sender uses recipient's public key and own private key to generate encryption key Ke to encrypt message M with selected encryption level x. The encrypted message xKe(M) is then transmitted over digital network that provide SMS to the recipient. The recipient then uses own private key and sender's public key to generate decryption key Kd (Ke=Kd). According to an embodiment the encryption of SMM messages is performed according to a proprietary cryptographic algorithm. Also disclosed is digital signature generation using sender's private key and a hash result of message M, and DS is then appended to M. The signed message is then transmitted over the digital network. The recipient then uses the sender's public key to generate fresh hash results and authenticates sender's signature. When authenticated the message is shown.