[openssl-users] EVP_DigestVerifyFinal with ECDSA signature
kgoldman at us.ibm.com
Tue Jan 3 18:41:34 UTC 2017
I'm trying to use the EVP interface for signature verification.
However, EVP_DigestVerifyFinal() takes a signature and length as
parameters. While I understand this for RSA, ECDSA signatures have R
and S elements.
Is there a convertor function?
If I must convert by hand, how is it done? In certificates, I see a
0x04 followed by R and S arrays.
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