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Digital certificates
Digital certificates
Definition
Digital certificates are electronic files that act like on-line passports. There are two
types of certificates.
■
Self-signed certificates.
Self-signed certificates are certificates that web servers create.
■
Certificates signed by a certificate authority.
Trusted third parties - Certificate authorities (CA) - issue the certificates. After
the CA receives a request, the CA checks the identity of the holder of the
certificate and signs the certificate. Then the certificate is sent back.
Secure connections
A digital certificate, given to a web server, helps to secure the connections on the
Internet in two ways.
■
The web server can prove uniquely the identity of the server to client machines.
■
The data that is exchanged on-line is encrypted and protected from theft or
tampering.
How digital certificates work
Before a client machine sends confidential information to a web server, the client
machine accesses the digital certificate of the server. The digital certificate includes
the public encryption key of the web server. The client machine uses the certificate
to start the following procedures that are described in the Secure Socket Layer (SSL)
protocol.
■
Analyse the certificate and authenticate the identity of the web server.
■
Encrypt the information that is sent to the web server.
Validity check of the certificates
Your browser approves the validity of a certificate when the certificate meets the
following requirements.
■
The CA that signed the certificate is on the list of trusted CAs that is installed on
your browser. If the certificate is self-signed, the certificate must be on the list of
trusted certificates that is installed on your browser.
■
The validity period has not been expired.
■
The common name of the certificate matches the URL of the web server.
If the certificate does not meet one or more of the three requirements above, the
browser displays a security alert. The browser asks you if you trust the certificate.
Refer to the on-line help of your browser for information about the handling of the
security alerts displayed for digital certificates.
Содержание VarioPrint 2100
Страница 1: ...Oc VarioPrint 2100 2110 Oc User manual User manual...
Страница 12: ...12 Contents...
Страница 13: ...13 Chapter 1 Introduction...
Страница 21: ...21 Chapter 2 Power...
Страница 26: ...26 Chapter 2 Power Restart the system...
Страница 27: ...27 Chapter 3 Get to know the Oc VarioPrint 2100 2110...
Страница 37: ...37 The main screen The sections of the main screen 14 14 The sections of the main screen...
Страница 95: ...95 Chapter 4 Adapt the system...
Страница 103: ...103 Chapter 5 The print function...
Страница 109: ...109 Interactive printing Illustration 42 42 Interactive print job...
Страница 142: ...142 Chapter 5 The print function Print a folded A5 booklet with the booklet maker on the Oc VarioPrint 2100 2110...
Страница 143: ...143 Chapter 6 The copy function...
Страница 179: ...179 Chapter 7 The scan function optional...
Страница 215: ...215 Chapter 8 The accounting function...
Страница 238: ...238 Chapter 8 The accounting function Make a copy or print with the copy card...
Страница 246: ...246 Chapter 9 Security Solve the issue with the Oc security certificate 81 81 The Certificate Error remains visible...
Страница 256: ...256 Chapter 9 Security Job name suppression...
Страница 257: ...257 Chapter 10 Add the supplies...
Страница 280: ...280 Chapter 10 Add the supplies Replace the stapler cartridge 6 optional stacker stapler...
Страница 281: ...281 Chapter 11 Error handling...
Страница 289: ...289 Appendix A Overview and tables...
Страница 297: ...297 Appendix B Miscellaneous...