OpenSSL "genpkey -genparam" - Generate DH Parameters

Q

How to generate a new DH parameter file using OpenSSL "genpkey -genparam" command?

✍: FYIcenter.com

A

If you need a new DH parameter file in order to create new DH keys, you can use the OpenSSL "genpkey -genparam" command as shown below:

C:\Users\fyicenter>\local\openssl\openssl.exe

OpenSSL> genpkey -genparam -algorithm dh -out my_dh.prm
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OpenSSL> exit

C:\Users\fyicenter>type my_dh.prm
-----BEGIN DH PARAMETERS-----
MIGHAoGBALzizRYfhhdc1miJMXG88tKCCdLOSIG7G2Fsh27ec41AP+pExiT781P/
JjnLmy85Niy9OhTZDkiSnAqNiWO+DC/3elIKjHfxQgBMMd+57MCduH9MEOVEQKb/
drJkPFeCBShJlM+KyoNCpLfV0Tu/icb/KTQAUdiQA0cehBtTNmwzAgEC
-----END DH PARAMETERS-----

Options used in this command are:

"-genparam" - Generate key generation required parameters
"-algorighm dh" - Use DH algorithm
"-out my_dh.prm" - Save output (the new DH key generation parameters) in a file.

⇒ OpenSSL "pkeyparam -text" - Print DH Parameters in Text

⇐ OpenSSL "genpkey" Command for DH Keys

⇑ OpenSSL "genpkey" Command for DH Keys

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