But, I cannot figure out how to get a successful connection.ĭigging through the Internet I found reference to the jsse.jar and having the correct certs installed (although nothing specific as to how to do it or why). But the second installation of Tomcat (9.0.33) has an app that requires a JDBC 4.0 or above driver and the JTDS driver is only a 3.0 driver so I have to use the MS driver. I tried switching that driver to the MS driver and it then experienced the same errors. I have a Tomcat 8.0.32 instance that connects to the SQL Server 2012 instance using the JTDS driver that has no problem at all in connecting.

This Linux server (CentOS 8) has two tomcat installations that use JDBC connections. So, I am not sure WHY the MS driver continues to complain about the SSL connection. I talked to our DB guy and he says there is no security on the connection that he knows of. The JDBC connection is to a SQL Server 2012 that does NOT have connection encryption enabled or any security that I know of. RSA 1024bit key used with certificate: CN=SSL_Self_Signed_Fallback. : Certificates do not conform to algorithm constraintsĬaused by: : Certificates do not conform to algorithm constraintsĬaused by: : Algorithm constraints check failed on keysize limits.

Error: ': Certificates do not conform to algorithm constraints'. I can provide the entire stack trace but the pruned version has this series of errors:Ĭom.: The driver could not establish a secure connection to SQL Server by using Secure Sockets Layer (SSL) encryption. SQL Server JDBC Error on Java 8: The driver could not establish a secure connection to SQL Server by using Secure Sockets Layer (SSL) encryption I found one article that was close to the issue I am experiencing.

Microsoft sql server jdbc driver 3.0