[openssl-users] openssl-users Digest, Vol 28, Issue 21

Richard Levitte levitte at openssl.org
Wed Mar 22 19:08:37 UTC 2017

In message <787239451.2530096.1490206287248 at mail.yahoo.com> on Wed, 22 Mar 2017 18:11:27 +0000 (UTC), Christian Adja <christian_adja at yahoo.it> said:

christian_adja> Thanks for the response, but haven't the evp_pkey struct of the public
christian_adja> key. I' ve only the an bytes string that i retrieved from IEEE cert
christian_adja> with "PEM_bytes_read_bio()". Now in want to form the ec_key struct and
christian_adja> then the evp_pkey struct.

I'm not sure how IEEE certs differ from X.509 certs...  if they don't,
you're better off reading the cert with PEM_read_bio_X509() and
extracting the public key with X509_get0_pubkey() or X509_get0_pubkey().

If IEEE certs differ in format, you must first know the exact byte
content, where the public key is in there, make sure it's encoded in
DER, and use d2i_EC_PUBKEY() to make a EC_KEY from those bytes.


Richard Levitte         levitte at openssl.org
OpenSSL Project         http://www.openssl.org/~levitte/

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