Authenticated radio frequency identification using aggregate digital signature and key distribution system therefor

摘要

A method is disclosed for generating an aggregate digital signature. The method comprises receiving first and second signature components (cl and sl). A third signature (c2) component is generated by encrypting said first signature component using a first encryption key (X2). A first intermediate signature component (h2) is generated from said third signature component and a second portion of data (V). A fourth signature component (s2) is generated from said first intermediate signature component and a first private key (w2). The second signature component (s1), third (c2) and fourth (s2) signature components are output as said digital signature.