Re: OpenSSL command line to display EC key data

On Wednesday, 16 August 2017 20:41:58 CEST Roger Dunn wrote:
> I have an EC key I am trying to extract the private+public key info
> 
> I use the command line:
> 
> openssl ec -in mykey.key.pem -noout -text
> 
> Output is as follows:
> 
> read EC key
> Private-Key: (256 bit)
> priv: 1 (0x1)
> pub:
>     xxxxxxxxxxxxxxxxxxxxxxxxx
>     xxxxxxxxxxxxxxxxxxxxxxxxx
>     xxxxxxxxxxxxxxxxxxxxxxxxx
> ASN1 OID: prime256v1

Is that pub value similar to:

  04
  6b17d1f2e12c4247f8bce6e563a440f277037d812deb33a0f4a13945d898c296
  4fe342e2fe1a7f9b8ee7eb4a7c0f9e162bce33576b315ececbb6406837bf51f5

then 1 *is* your private key value (I don't think I have to explain how bad 
that is...)


-- 
Regards,
Hubert Kario
Senior Quality Engineer, QE BaseOS Security team
Web: www.cz.redhat.com
Red Hat Czech s.r.o., Purkyňova 115, 612 00  Brno, Czech Republic

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