원문정보
초록
영어
In the information exchange through network, the security risks always exist, that is
eavesdropping, defacing, and spoofing by the attacker. PKI (Public Key Infrastructure) will
prevent such attacks. But key management is very serious problem in PKI. The public key
certificate is issued and distributed by certificate authority, but we think that the updating of
expired certificate etc. are very costly for users. And secret key management is more serious
problem. In order to solve above problems, we propose the scheme that stores protected
secret key which is made by combination of biometrics and secret key in the smartcard in IDbased cryptography system. The user can restore the secret key from protected secret key by
presenting his fingerprint to smartcard that has protected secret key and helper data. In our
scheme, the template is not need for authentication. So, the problem of the template leakage
won't arise. Lastly, we proposed the concrete operation scheme in which our scheme is used
and how to make signature or authentication by applying our scheme. We show that the cost
of the public key and secret key management will be reduced by using this operation scheme.
목차
1. Introduction
2. Verification of public key validity
2.1. Public key management using ID-based cryptography
3. Biometrics
3.1. Fingerprint authentication token system
3.2. Anonymous biometrics
4. Registration of protected secret key and extraction of secret key usinganonymous biometrics
4.1. Prerequisite
4.2. Protected secret key registration
4.3. Secret key extraction
4.4. Security discussion
4.5. Comparison between fingerprint authentication systems with proposed method
5. Proposal of concrete operation method
6. Digital signature generation and authentication
6.1. Second-order headings
6.2. Authentication
7. Summary and future work
8. References