OpenSSL has the higher-level EVP_PKEY_* functions which work abstracts the
public key cryptography algorithms. However, sometimes a EVP_PKEY* only has a
public key. How could I check if a given EVP_PKEY* contains a private key? I
could use EVP_PKEY_decrypt_init and see if it returns an error, but that seems
to be quite heavy-handed for what seems to be a simple check. The other option
is to go through the EVP_PKEY_get0_* functions and investigate the underlying
mechanism directly (e.g. EVP_PKEY_get0_RSA and checking the RSA*'s private
exponent is NULL), but that is also clumsy as I'll have to write code for every
possible algorithm.
Thanks
Stephen
_______________________________________________
openssl-users mailing list
To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-users
