公开(公告)号：JPH08328471A

公开(公告)日：1996-12-13

申请号：JP12384496

申请日：1996-05-17

Applicant: KOREA TELECOMMUNICATION

Inventor： AN GUMU HIYOKU ,  I EN HO ,  BAKU IRU HOAN ,  JIYAN CHIYON YON

IPC: H04L9/30 ,  G06F9/06 ,  G09C1/00 ,  H04L9/32

Abstract: PROBLEM TO BE SOLVED: To provide a reliable information service and an efficient authentication in restorative electronic signature method, additive electronic signature method, and authentication exchange method. SOLUTION: A signer A calculates excesses x, y1 , y2 to generate an electronic signature (x, y1 , y2 ). A verifier B inputs (x) and an identification number ID to a hash function to generate h(x, IDA). A massage is restored by calculation according to a prescribed equation, and these contents are confirmed to verify the justice of the electronic signature (x, y1 , y2 ) of the signer A.

公开(公告)号：JPH08328472A

公开(公告)日：1996-12-13

申请号：JP15496396

申请日：1996-05-27

Applicant: KOREA TELECOMMUNICATION

Inventor： BAKU IRU HOAN ,  JIYAN CHIYON YON

IPC: H04L9/08 ,  G06F9/06 ,  G09C1/00 ,  H04L9/32

Abstract: PROBLEM TO BE SOLVED: To prevent a perjury in restorative, additive, restorative public, addi tive public, and blind electronic signature methods, authentication exchange method, and key exchange method. SOLUTION: An attestant A selects an optional number (r) to generate authentication information I, then calculates x≡Ig mod p and transmits the result to a verifier B. The verifier B selects and transmits an optional number (e). The attestant A inputs the received optional number (e) and (x) to a hash function to generate h(x,e), and then calculates and transmits y≡r+ah(x,e) mod q. The verifier B inputs the optional numbers (e) and (x) to the hash function to generate h(x, e), then calculates I≡xg v , mod p to restore the I, and confirms its content to authenticate the attestant A.