[openssl-users] Converting a p12 or PEM formatted private key to a PKCS#1 format

Viktor Dukhovni openssl-users at dukhovni.org
Thu Sep 3 16:06:06 UTC 2015

On Thu, Sep 03, 2015 at 08:21:25AM -0700, tmcclure0501 wrote:

> We have an embedded MQTT framework that we want to configure for mutual
> authentication.  The framework is complaining that it needs a key format of
> PKCS#1.  We have p12 and pem formats of the key.  Does openssl support
> converting keys to the PKCS#1, if so what is the command? 

I've never heard of a PKCS#1 key format, I'm only aware of

    PKCS#8	- Private key
    PKCS#12	- Private key and related certificates

Consult the documentation for the product, this is not an OpenSSL
question until at least the desired key format is known.


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