Patent ID: 8694771
Filing Date: 2014-04-08
Classification: H04L

Abstract:
1. A method of sending an encrypted message by a sender having a sender identity string (Id sender ) to a recipient over a network using identity-based encryption, the method comprising: identifying a trusted center (TC) by a TC identity string (Id determining if the sender has a sender private key (Prv verifying the public parameters (PK) of the trusted center (TC) by the sender using the TC identity string (Id identifying the recipient by a recipient identity string (Id generating the identity-based public encryption key of the recipient (g encrypting the plaintext message (M) as ciphertext (C) using the public parameters (PK), a random symmetric key (o) and the identity-based public encryption key of the recipient (g transmitting the ciphertext (C) to the recipient over the network.