Patent ID: 7698558
Filing Date: 2010-04-13
Classification: H04L

Abstract:
1. A method of authenticating to a recipient a message provided by a sender and transmitted via registered mail by a server to the recipient where the recipient also receives from the server an attachment to the message and a string defined by an encrypted hash of (a) the identity of the sender, (b) the message stripped of the attachment, (c) a hash of the attachments and (d) a hash of (a), (b) and (c) and also receives an identification of a website at the server where the message is to be authenticated, and where the message also provides a user with a menu that includes service options of: “Send Register Unmarked” “Send for Official use Only” “Use a Reply Registered Feature” “Use a DIGITAL SEAL Feature” “Send encrypted (with OUTLOOK Security integration)”, and “Send digitally signed (with OUTLOOK security integration)”, the steps of: receiving at the website server the message, the attachments and the string defined by the encrypted hash of the message, the attachments and the encrypted hash of the message, the identify of the sender and the hash of the attachments, detaching, decrypting and dehashing the encrypted hashed string to provide (a) the identify of the sender, (b) hashes of the attachments (c) the original message stripped of the attachments and (d) the hash of (a), (b) and (c), providing a hash of (a), (b) and (c), comparing the hash received at the server website of (a), (b) and (c) and the hash generated at the server website of (a), (b) and (c) detaching the attachments from the message received at website server and hashing the attachments, comparing the hashed attachments received at the website server in the string and the hashed attachments separated from the string at the website server, and authenticating the message received in the string at the website server when the hashed attachments being compared at the website server are the same and when the hashes received and generated at the website server are the same.