6 hours ago I am developing a C++ client/server application that uses OpenSSL. The server uses a whitelist in order to accept only certain clients. On the server, I generate a self-signed root certificate (rootCA.pem), which is also used as the server certificate. (I will use a separate server certificate in the future, this is describing my application now).
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5 hours ago To ensure openssl s_client (or openssl s_server) uses your root, use the following options: -CAfile option to specify the root -cert option for the certificate to use -key …
Just Now Client certificate-based authentication is about client identification and authentication on a server, not TLS transport security. TLS security alone is accomplished …
3 hours ago A serverinfo file containing the Certificate Transparency information can be configured within OpenSSL and it will then be sent back to the client as appropriate. In …
9 hours ago Yes, it's entirely possible for clients to authenticate with your web server using self-signed client certificates. See https://cweiske.de/tagebuch/ssl-client-certificates.htm for …
9 hours ago OpenSSL 1.0.1e advertises TLSv1.2 as the highest protocol level in its ClientHello . Callback OpenSSL provides the ability for an application to interact with the chain validation by way of a callback. Normally, most application don't …
1 hours ago 2. Well, to simply connect to PC using openssl you have to use openssl s_server on one side and openssl s_client on another side: PCA> openssl s_server -cert …
Just Now By default TLS only validates the authenticity of the server and not of the client (application) which is sending the request. We can use mutual TLS where both clients request certificates from the server to ensure the server is who it …
2 hours ago The client certificate to use, if one is requested by the server. The default is not to use a certificate. The chain for the client certificate may be specified using -cert_chain. -certform …
8 hours ago To create a certificate, use the intermediate CA to sign the CSR. If the certificate is going to be used on a server, use the server_cert extension. If the certificate is going to …
2 hours ago The first thing we do is create an SSL_CTX or SSL context. This is created using the TLS_server_method which creates a server that will negotiate the highest version of …
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To ensure openssl s_client (or openssl s_server) uses your root, use the following options: See the docs on s_client (1) and s_server (1) for details. To do the same programmatically on the client, you would use: SSL_CTX_use_PrivateKey to load the private key for the client certificate To do the same programmatically on the server, you would use:
OpenSSL provides built-in support for the client side of Certificate Transparency but there is no built-in server side support. However this can easily be achieved using “serverinfo” files.
OpenSSL's s_client implements nearly every client side feature available from the library. The code below does not perform hostname verification. OpenSSL prior to 1.1.0 does not perform the check, and you must perform the check yourself.
Using this method will negotiate the highest protocol version supported by both the server and the client. SSL/TLS versions currently supported by OpenSSL 1.0.2 are SSLv2, SSLv3, TLS1.0, TLS1.1 and TLS1.2. The actual SSL and TLS protocols are further tuned through options.