encryption and data transfer method between sender and recipient using a network, server operating method for encrypting and transferring data between a sender and recipient using a network and computer media for encryption and data transfer method between a sender and a recipient using a network

摘要

Encryption and Data Transfer Method Between a Sender and a Recipient Using a Network, Method of Operating a Server to Encrypt and Transfer Data Between a Sender and a Data Recipient Using a Network and a Recipient BETWEEN A SENDER AND A RECIPIENT USING A NETWORK The present invention relates to a method of encrypting and transferring data between a sender and a recipient using a network, thereby transferring data securely. The method comprises the steps of receiving by a server a recipient identifier (S4A, S4B) from the sender; establishing a transfer-specific transfer-specific encryption key (S7B); data encryption using transfer-specific encryption key (S8B); server access to recipient specific information in accordance with the identifier received from the recipient and encryption, with recipient specific information, of said transfer specific encryption key (S11B); transfer of encrypted data and network-specific transfer encryption key to be received by the recipient (SllB); receipt by the server of the specified encrypted transfer key from the recipient; server access to recipient-specific information to decrypt the encrypted transfer-specific encryption key; and decrypting the encrypted data using the decrypted transfer-specific encryption key.