| 摘要 |
A method and system for securely transmitting data from a sender to a receiver wherein a private lock is created by a receiver. The private lock is freely distributable while the key remains with the receiver. To receive encrypted data, the lock is sent to the sender who uses the lock to encrypt data. The sender sends the encrypted data to the receiver. When the receiver receives the encrypted data, he can decipher the message using his own key. In cases where there are multiple intended recipients, each recipient sends their lock to the sender and the sender encrypts the same data with each of the locks. The sender then sends the encrypted data to each of the recipients. Each recipient uses their own key to access the data. In some instances, the locks will be recognizable and each receiver will be able to identify his own lock while in other instances the locks will not be recognizable and the user will not know how many locks are on the data or the types of locks that are being used. In those cases, the receiver can still apply his own key to all locks to see if any of the locks open. By using the method and system of the present invention, the transmissions of data is more secure because of the reduced risk of keys being shared, lost or stolen, the role of certificate authority is eliminated, and the role of registration authority becomes optional.
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