×

Secure file transfer system and method

  • US 5,297,208 A
  • Filed: 08/05/1992
  • Issued: 03/22/1994
  • Est. Priority Date: 08/05/1992
  • Status: Expired due to Fees
First Claim
Patent Images

1. A file transfer system consisting ofa plurality of computers connected by a communications channel,means for generating or retrieving random numbers in each of said computers,means for digital handshaking between said computers to establish communications,means for sending frames and data blocks through said channel, reliably and efficiently,means for transmitting an encryption initialization vector frame in order to synchronize cipher feedback,means for deriving a secure session key in each of said computers, based on said random numbers and on exchanged derived numbers,means for encrypting data blocks using said cipher feedback,means for detecting transmission errors,means for resending variants of said encryption initialization vector frame and said frames and data blocks in case of said transmission errors,means for sending an encrypted copy of a file or files based on said session key,means for receiving said encrypted copy of said file or files, andmeans for decrypting said received copy of said file or files.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×