Patent ID: 7653814
Filing Date: 2010-01-26
Classification: G06F,H04L

Abstract:
1. A method for creating an authenticated hyperlink to access a file by means of a hyperlink address and to authenticate said hyperlink address and said file when said authenticated hyperlink is activated, said method comprising the steps of: providing a digital image; encoding the address of a file in a first portion of said digital image, said address of the file being a Uniform Resource Locator (URL) that includes a network address of the file; computing a message authentication code based on the address of the file and the file; encoding the computed message authentication code in a second portion of said digital image, wherein the message authentication code is computed using a hash function having as inputs the address of the file, the file, and a secret key K, and after said encoding the address of a file in the first portion of said digital image and after said encoding the computed message authentication code in the second portion of said digital image, a computer workstation storing the digital image in a storage device comprised by the computer workstation.