On Thu, Jul 07, 2016, Chris Bare wrote:
> Ok, that makes sense with what I'm seeing. I just tried changing this:
> const EVP_MD* md = EVP_get_digestbyobj(sig_alg_oid);
> to this:
> const EVP_MD* md = EVP_get_digestbyname("SHA256");
>
> and it all worked correctly.
> so given that I have an OID for ecdsa-with-SHA256, is there a function that
> will return just the digest algorithm?
> I'm trying to be as flexible as possible, so I don't want to hard code this
> or have my own limited lookup table.
>
OBJ_find_sigid_algs() you pass it the NID of the signature algorithm and it
reurns the public key NID and the digest NID.
Steve.
--
Dr Stephen N. Henson. OpenSSL project core developer.
Commercial tech support now available see: http://www.openssl.org
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