Certificates and Authentication
Appendix
J
Introduction to Public-Key Cryptography
787
In Figure J-7, the Engineering CA certificate contains the DN of the CA (that is,
USA CA), that issued that certificate. USA CA’s DN is also the subject name of
the next certificate in the chain.
•
Each certificate is signed with the private key of its issuer. The signature can be
verified with the public key in the issuer’s certificate, which is the next
certificate in the chain.
In Figure J-7, the public key in the certificate for the USA CA can be used to
verify the USA CA’s digital signature on the certificate for the Engineering CA.
Verifying a Certificate Chain
Certificate chain verification is the process of making sure a given certificate chain
is well-formed, valid, properly signed, and trustworthy. Netscape software uses
the following procedure for forming and verifying a certificate chain, starting with
the certificate being presented for authentication:
1.
The certificate validity period is checked against the current time provided by
the verifier’s system clock.
2.
The issuer's certificate is located. The source can be either the verifier’s local
certificate database (on that client or server) or the certificate chain provided by
the subject (for example, over an SSL connection).
3.
The certificate signature is verified using the public key in the issuer's
certificate.
4.
If the issuer's certificate is trusted by the verifier in the verifier's certificate
database, verification stops successfully here. Otherwise, the issuer's certificate
is checked to make sure it contains the appropriate subordinate CA indication
in the Netscape certificate type extension, and chain verification returns to step
1 to start again, but with this new certificate. Figure J-8 presents an example of
this process.
Содержание Certificate Management System 6.1
Страница 1: ...Administrator s Guide Netscape Certificate Management System Version6 1 February 2003...
Страница 28: ...Documentation 28 Netscape Certificate Management System Administrator s Guide February 2003...
Страница 68: ...Support for Open Standards 68 Netscape Certificate Management System Administrator s Guide February 2003...
Страница 82: ...Uninstalling CMS 82 Netscape Certificate Management System Administrator s Guide February 2003...
Страница 166: ...How a Registration Manager Works 166 Netscape Certificate Management System Administrator s Guide February 2003...
Страница 382: ...ACL Reference 382 Netscape Certificate Management System Administrator s Guide February 2003...
Страница 566: ...Managing Policy Plug in Modules 566 Netscape Certificate Management System Administrator s Guide February 2003...
Страница 710: ...1 3 Organization Security Policies 710 Netscape Certificate Management System Administrator s Guide February 2003...
Страница 716: ...Object Identifiers 716 Netscape Certificate Management System Administrator s Guide February 2003...
Страница 762: ...DNs in Certificate Management System 762 Netscape Certificate Management System Administrator s Guide February 2003...
Страница 794: ...Managing Certificates 794 Managing Servers with Netscape Console December 2001...
Страница 810: ...The SSL Handshake 810 Managing Servers with Netscape Console December 2001...
Страница 828: ...828 Netscape Certificate Management System Administrator s Guide February 2003...