Meta-comment: The documentation is very thin on when objects should or should not be freed. The application developer is forced to chose between [don't free, leak memory] and [free, access freed memory]. ~~ 1 - The documentation here says this API is available, but I don't see it in either the source or the installed header. https://www.openssl.org/docs/manmaster/crypto/X509_get_pubkey.html 2 - The doc also says that X509_get_pubkey() can be used but "the returned key must be freed up after use". It would be nice if it said how to free it. I assume that EVP_PKEY_free() is correct. 3 - I use this sequence: x509 = PEM_read_bio_X509 EVP_PKEY = X509_get_pubkey RSA = EVP_PKEY_get1_RSA What should be freed? All three structures or just a subset?
