公开(公告)号：FR2738437B1

公开(公告)日：2001-10-12

申请号：FR9613643

申请日：1996-11-08

Applicant: KOREA TELECOMM AUTHORITY

Inventor： PARK ILL HWAN ,  JANG CHUNG RYONG

IPC: H04L9/08 ,  G06F9/06 ,  G09C1/00 ,  H04L9/32 ,  H04L12/22

Abstract: An identification scheme which allows a prover to identify his own identity to a verifier more certainly and prevents already used authentication information from being re-used, a key exchange which uses a common secret key between two users in order not to allow an unauthorized to find it out, a digital signature scheme giving message recovery and digital signature scheme with appendix for producing a digital signature of a message recovery type or appendix type according to the size of a message to be signed, a multi-digital signature scheme for allowing multiple signers to generate digital signatures with respect to the same message and producing them in a message recovery type or appendix type according to the length of the message to be signed, and a blind digital signature scheme for producing a digital signature when a message to be signed should not be opened to the public as well as the signer and therefore a signer does not know the contents thereof.

公开(公告)号：FR2735308B1

公开(公告)日：2004-01-30

申请号：FR9606154

申请日：1996-05-17

Applicant: KOREA TELECOMM AUTHORITY

Inventor： AHN KEUM HYUG ,  LEE YUN HO ,  PARK ILL HWAN ,  JANG CHUNG RYONG

IPC: H04L9/30 ,  G06F9/06 ,  G09C1/00 ,  H04L9/32 ,  H04L12/22

Abstract: An identification scheme, a digital signature scheme giving message recovery, and a digital signature scheme with appendix are disclosed. In processing and transmitting information, a transmitting counterpart of a transmission message is confirmed. The unauthorized modification of the message is confirmed and transmitting behavior is detected, thereby providing the reliable information service.

公开(公告)号：FR2738438B1

公开(公告)日：2001-10-12

申请号：FR9613644

申请日：1996-11-08

Applicant: KOREA TELECOMM AUTHORITY

Inventor： PARK ILL HWAN ,  JANG CHUNG RYONG

IPC: H04L9/08 ,  G06F9/06 ,  G09C1/00 ,  H04L9/32 ,  H04L12/22

Abstract: An identification scheme which allows a prover to identify his own identity to a verifier more certainly and prevents already used authentication information from being re-used, a key exchange which uses a common secret key between two users in order not to allow an unauthorized to find it out, a digital signature scheme giving message recovery and digital signature scheme with appendix for producing a digital signature of a message recovery type or appendix type according to the size of a message to be signed, a multi-digital signature scheme for allowing multiple signers to generate digital signatures with respect to the same message and producing them in a message recovery type or appendix type according to the length of the message to be signed, and a blind digital signature scheme for producing a digital signature when a message to be signed should not be opened to the public as well as the signer and therefore a signer does not know the contents thereof.

公开(公告)号：FR2735307B1

公开(公告)日：2001-10-12

申请号：FR9606473

申请日：1996-05-24

Applicant: KOREA TELECOMM AUTHORITY

Inventor： PARK ILL HWAN ,  JANG CHUNG RYONG

IPC: H04L9/08 ,  G06F9/06 ,  G09C1/00 ,  H04L9/32 ,  H04L12/22

Abstract: An identification scheme which allows a prover to identify his own identity to a verifier more certainly and prevents already used authentication information from being re-used, a key exchange which uses a common secret key between two users in order not to allow an unauthorized to find it out, a digital signature scheme giving message recovery and digital signature scheme with appendix for producing a digital signature of a message recovery type or appendix type according to the size of a message to be signed, a multi-digital signature scheme for allowing multiple signers to generate digital signatures with respect to the same message and producing them in a message recovery type or appendix type according to the length of the message to be signed, and a blind digital signature scheme for producing a digital signature when a message to be signed should not be opened to the public as well as the signer and therefore a signer does not know the contents thereof.