Accept all SSL certificates (not only certs that the machine trusts) using CData ADO.NET Provider for SharePoint
Connection string
This CData ADO.NET Provider for SharePoint connection string can be used for connections to SharePoint.
URL=https://sharepointServerName/;User=myUsername;Password=myPassword;SSL Cert=*;
This property can also be used to specify a single SSL certificate to be accepted. Use the value of a full PEM certificate, the path to a file containing the certificate, the public key, the MD5 thumbprint, or the SHA1 thumbprint.