CTLOG_get0_public_key
EVP_PKEY *CTLOG_get0_public_key(const CTLOG *log);
LCRYPTO_ALIAS(CTLOG_get0_public_key);
if (X509_PUBKEY_set(&log_pkey, CTLOG_get0_public_key(log)) != 1)
LCRYPTO_USED(CTLOG_get0_public_key);