+ EVP_PKEY_free(pkey);
+ return 0;
+}
+
+EVP_PKEY *X509_PUBKEY_get0(X509_PUBKEY *key)
+{
+ EVP_PKEY *ret = NULL;
+
+ if (key == NULL || key->public_key == NULL)
+ return NULL;
+
+ if (key->pkey != NULL)
+ return key->pkey;
+
+ /*
+ * When the key ASN.1 is initially parsed an attempt is made to
+ * decode the public key and cache the EVP_PKEY structure. If this
+ * operation fails the cached value will be NULL. Parsing continues
+ * to allow parsing of unknown key types or unsupported forms.
+ * We repeat the decode operation so the appropriate errors are left
+ * in the queue.
+ */
+ x509_pubkey_decode(&ret, key);
+ /* If decode doesn't fail something bad happened */
+ if (ret != NULL) {
+ X509err(X509_F_X509_PUBKEY_GET0, ERR_R_INTERNAL_ERROR);
+ EVP_PKEY_free(ret);
+ }
+
+ return NULL;