Patent ID: 6856976
Filing Date: 2005-02-15
Classification: G06F,G06Q

Abstract:
1. A computerized method for employing a transaction agency to electronically transfer a two-part file from a seller to a buyer, wherein said two-part file includes an overhead and a content and said method comprises the steps of: encrypting said file, wherein at least a portion of the content is encrypted by the seller using a private key, and wherein the overhead includes the private key and is encryprd using a public key provided by the transaction agency; transferring said encrypted file on the internet from the seller to the buyer; seperating said two part file into the encrypted content and the encrypted overhead at the buyer; sending said overhead from the buyer to the transaction agency; decrypting the overhead by the transaction agency, using the public key to reveal the private key; providing the revealed private key to the buyer; and using the private key by the buyer to decrypt the content.