The forwarder node random linearly codes the encrypted data and directly processes the cryptotext tags based on the homomorphism feature.
Given the homomorphism of the homomorphic encryption function, the forwarder node random linearly codes the encrypted data and directly processes the cryptotext coefficients, without knowing the decryption keys or performing expensive decryption operations.
There are many good, low-cost public key encryption programs available, such as Cryptotext
and PGP (Pretty Good Privacy).
In the transmission process, the message can be secured though the encrypted message is transformed into a length of illegible cryptotext
and may attract unwanted attention.