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How to generate CSR

Tomcat

Create a local Certificate Signing Request (CSR)

In order to obtain a Certificate from the Certificate Authority of your choice you have to create a so called Certificate Signing Request (CSR). That CSR will be used by the Certificate Authority to create a Certificate that will identify your website as "secure". To create a CSR follow these steps:

  • Create a local Certificate (as described in the previous section):
    keytool -genkey -alias tomcat -keyalg RSA \
        -keystore <your_keystore_filename>
    Note: In some cases you will have to enter the domain of your website (i.e. www.myside.org) in the field "first- and lastname" in order to create a working Certificate.
  • The CSR is then created with:
    keytool -certreq -keyalg RSA -alias tomcat -file certreq.csr \
        -keystore <your_keystore_filename>

Now you have a file called certreq.csr that you can submit to the Certificate Authority (look at the documentation of the Certificate Authority website on how to do this). In return you get a Certificate.