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45 lines
2.5 KiB
ReStructuredText
45 lines
2.5 KiB
ReStructuredText
:orphan:
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BearSSL Secure Server Class
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---------------------------
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Implements a TLS encrypted server with optional client certificate validation. See `Server Class <server-class.rst>`__ for general information and `BearSSL Secure Client Class <bearssl-client-secure-class.rst>`__ for basic server and BearSSL concepts.
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setBufferSizes(int recv, int xmit)
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Similar to the `BearSSL::WiFiClientSecure` method, sets the receive and transmit buffer sizes. Note that servers cannot request a buffer size from the client, so if these are shrunk and the client tries to send a chunk larger than the receive buffer, it will always fail. This must be called before the server is
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Setting Server Certificates
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~~~~~~~~~~~~~~~~~~~~~~~~~~~
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TLS servers require a certificate identifying itself and containing its public key, and a private key they will use to encrypt information with. The application author is responsible for generating this certificate and key, either using a self-signed generator or using a commercial certification authority. **Do not re-use the certificates included in the examples provided.**
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This example command will generate a RSA 2048-bit key and certificate:
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.. code:: bash
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openssl req -x509 -nodes -newkey rsa:2048 -keyout key.pem -out cert.pem -days 4096
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Again, it is up to the application author to generate this certificate and key and keep the private key safe and **private.**
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setRSACert(const BearSSL::X509List \*chain, const BearSSL::PrivateKey \*sk)
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Sets a RSA certificate and key to be used by the server when connections are received. Needs to be called before `begin()`
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setECCert(const BearSSL::X509List \*chain, unsigned cert_issuer_key_type, const BearSSL::PrivateKey \*sk)
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Sets an elliptic curve certificate and key for the server. Needs to be called before `begin()`.
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Requiring Client Certificates
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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TLS servers can request the client to identify itself by transmitting a certificate during handshake. If the client cannot transmit the certificate, the connection will be dropped by the server.
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setClientTrustAnchor(const BearSSL::X509List \*client_CA_ta)
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Sets the trust anchor (normally a self-signing CA) that all received certificates will be verified against. Needs to be called before `begin()`.
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