Zilog EZ80F91AZA Instrukcja Użytkownika Pobierz pdf (Strona 11)

UM020107-1211 Introduction

ZTP Network Security SSL Plug-In

User Manual

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SSL3_ClientInit

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SSL3_ServerInit

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TLS1_ClientInit

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TLs1_ServerInit

Client mode support is enabled by calling the corresponding xxx_ClientInit API.

Server mode support is enabled by calling the corresponding

xxx_ServerInit API. Cli-

ent-Server mode is enabled by calling

xxx_ClientInit and xxx_ServerInit API. An

optional HTTPS server can also be created by calling the

https_init API.

The code fragment that follows shows an example of each of these initialization steps.

* Initialize the SSL Layer

Initialize_SSL();

* Initialize each handshake protocol for client

* and server support. Each protocol is configured

* to use the same certificate chain. Ephemeral

* Diffie-Hellman parameters are used for SSLv3

* and TLSv1.

SSL2_ClientInit();

SSL2_ServerInit( &CertChain, NULLPTR );

SSL3_ClientInit();

SSL3_ServerInit( &CertChain, &DheParams );

TLS1_ClientInit();

TLS1_ServerInit( &CertChain, &DheParams );

* Launch the HTTPS server over SSL

https_init(http_defmethods,httpdefheaders,website,443);

After the initialization steps are complete, the application programs set up SSL sessions

and securely transfer data using an API that is almost identical to that of the TCP API run-

ning on the underlying ZTP system.

TCP-based applications in ZTP use the

open, bind, send, and receive API sockets to

establish TCP connections and transfer data. To use SSL, ZTP applications still use the

same API. The only difference is the use of the

SOCK_SSL socket type instead of the

SOCK_STREAM socket type.

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