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Quick and dirty way to generate a self signed cert that lasts 10 years

November 17, 2015 Leave a comment

While I love IIS’s and most program’s ability to generate a self signed cert, my gripe with those is that they last only a year. While a year is generally sufficient for development purposes, sometimes you want one that lasts a whole lot longer.

 

In order to get one that lasts longer, you will need to turn to openssl.

 

Here are the steps

openssl req -x509 -newkey rsa:2048 -keyout key.pem -out cert.pem -days 3650 -nodes -config ..\share\openssl.cnf

openssl pkcs12 -export -out localhost.pfx -inkey key.pem -in cert.pem

 

Parameters

– newkey: Generate a RSA 2048 bit encryption key

– keyout: the file containing the private key

– out: the file containing the certificate details

– days: how many days is this certificate valid for

– nodes: needed for pfx

– config: for windows, to specific the configuration file location

 

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Categories: Development, General, IIS, SSL