AusCERT - Change SSL certificate formats

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Change SSL certificate formats

Date: 02 October 2011

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SSL converter

The SSL Converter provides guidance on a range of certificate formats and includes tools and OpenSSL commandline instructions for changing certificate formats after a certificate has been generated.

Changing formats from PEM to DER

CSRs generated in OpenSSL will use the PEM format by default. However, if the format does not suit your requirements the certificate format can be changed, after the certificate has been issued. See the Apache SSL FAQ.