公开(公告)号：EP0963638A1

公开(公告)日：1999-12-15

申请号：EP98959943.0

申请日：1998-12-10

申请人： ETAT FRANCAIS Représenté par le Délégué Général pour l'Armement

发明人： JOUX, Antoine

IPC分类号： H04L9

CPC分类号： H04L9/3066 ,  H04L9/3247

摘要： The invention concerns in particular a method for generating a digital signature (c, d) of a message M and a method for authenticating such a signature, in particular it concerns a method for generating a digital signature (c, d) of a message M which consists in: defining a modulo N and a base g, a public key Y and a private key x, said parameters N, g, Y and y being linked by the relationship: Y = gx (mod N); defining a hashing function H whereof the result size comprises S bits; selecting a number r of T bits with T >= 2S; in computing u according to the following relationship: u=gr * Yz where Z=2S; hashing by the function H the concatenation of m and u, the resulting number being the value c of the signature; computing the value d of the signature by the relationship: d=r+c*x.

公开(公告)号：EP0963638B1

公开(公告)日：2005-10-05

申请号：EP98959943.6

申请日：1998-12-10

申请人： ETAT FRANCAIS Représenté par le Délégué Général pour l'Armement

发明人： JOUX, Antoine

IPC分类号： H04L9/32

CPC分类号： H04L9/3066 ,  H04L9/3247