This technology relates to a security device and program that includes an antenna for receiving communication signals, an encryption unit for encrypting data with an encryption key, and a control unit for transmitting encrypted data to an external device.
Existing encryption methods required senders and receivers to share identical keys, leading to a vulnerability where security could be compromised if a key was leaked.
To address this, this technology enhances security by deriving encryption and decryption keys from different source keys and by not transmitting the encryption key's source key externally, thereby reducing the risk of key leakage.
* This invention is the result of the project 'Development of High-Quality Cryptographic Key Generation and Core Security Technologies Based on Electrical Signals for Secure 4th Industrial Services,' conducted with the support of the Ministry of Science and ICT.
US2022-0360438A1
