WELCOME TO
INTRODUCTION OF ELECTRONIC
BUSINESS
5.1
5.2
5.3
5.4
SSLSET
SSLSET
5.1
5.1.1
5.1.2
5.1.3
5.1.4
5.1.5
5.1.1
()
VAN()
Web
5.1.2
5.1.3
5.1.4
5.1.5
1
2
1
2 3
3—
RSA
3
5.2
5.2.1
5.2.2 SSLSET
5.2.3 CA
5.2.1
1.
2.
3.
4.
5.2.2 SSLSET
1.(SSL)
2.(SET)
1SSLSecure Sockets Layer
1SSL
2WebSSL
2 SETSecure Electronic
Transaction
1SET
2SET3-51
3SET
SET
3
1S-HTTP
2InternetS/MIME
5.2.3 CA
1,CA
2,CA
3,CA
1,CA
(Certificate AuthorityCA)
(third party)
(RS)(RA)(CA)
2,CA
(1)
(2)
(3)
(4)
(5)
3,CA
CA
CAVeriSignGTE Cyber TrustThawte
CA
lwww.ca365.comCACA
l www.bjca.org.cn
5.4
5.4.1
5.4.2
5.4.1
1.
2.
1.
()
H as h
I n t e rn e t
H as h
H a s h
I n t e r n e t
H a s h
H as h
1
I n t e rn e t
D T S
D T S
H as h
1
1
+
2.
5.4.2
1,
2.
1,
2.
(Personal Digital ID)
()(Server ID)
()(Developer ID)
3-30~3-32
1
2
3
1
2
3
CA
1
2
1
2
1Outlook Express 5,1Outlook Express
52
2Outlook Express 51 2
Outlook Express1
Outlook Express2
Outlook Express3
5.4
5.4.1
5.4.2
5.4.3
5.4.4
5.4.5
5.4.1
IntranetInternet
1
2
5.4.2
1.
WWWHTTPFTP
2.Internet
3.
4.
5.4.3
5.4.4
1.
2.
3.
4.
5.4.5
1
2CA
3
4
SSLSET
THANK YOU VERY
MUCH