Generating RSA PrivateKey and PublicKey programmaticallly

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Is there any other way to store private key and public key rather than in
PEM format in file ?

I mean API to store public and private key separately in memory.

Thanks & Regards,
Nayna Jain



From:	Matt Caswell <matt@xxxxxxxxxxx>
To:	openssl-users at openssl.org
Date:	04/28/2015 08:29 PM
Subject:	Re: [openssl-users] Generating RSA PrivateKey and PublicKey
            programmaticallly
Sent by:	"openssl-users" <openssl-users-bounces at openssl.org>





On 28/04/15 15:39, Nayna Jain wrote:
> Hi all,
>
> I want to generate public and private key pair programmatically.
>
> However, I have some basic questions.
>
> The key generated using RSA_generate_key_ex  is actually a key pair ,
> having both private and public key.
> NOw, if I want to extract the public and private keys separately from
> this and want to store it in different privatekey.pem and publickey.pem
> file, how can I do that programmatically.
>
> Also, when openssl genrsa commandline generates the privatekey.pem, does
> it has only private key or also publickey

Take a look at the various PEM_write*PUBKEY() and PEM_write*PrivateKey()
functions here:

https://www.openssl.org/docs/crypto/pem.html

Matt

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