Partial port of EC_KEY_METHOD from OpenSSL 1.1.

This commit adds init/free, support for signing, setting and
getting the method, engine support as well as extra data.

from markus

1 files changed, 123 insertions, 0 deletions

diff --git a/src/lib/libcrypto/engine/tb_eckey.c b/src/lib/libcrypto/engine/tb_eckey.c
new file mode 100644
index 0000000000..dd30815788
--- /dev/null
+++ b/src/lib/libcrypto/engine/tb_eckey.c
@@ -0,0 +1,123 @@
+/* ====================================================================
+ * Copyright (c) 2000 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include "eng_int.h"
+
+static ENGINE_TABLE *ec_table = NULL;
+static const int dummy_nid = 1;
+
+void
+ENGINE_unregister_EC(ENGINE *e)
+{
+        engine_table_unregister(&ec_table, e);
+}
+
+static void
+engine_unregister_all_EC(void)
+{
+        engine_table_cleanup(&ec_table);
+}
+
+int
+ENGINE_register_EC(ENGINE *e)
+{
+        if (e->ec_meth)
+                return engine_table_register(&ec_table,
+                    engine_unregister_all_EC, e, &dummy_nid, 1, 0);
+        return 1;
+}
+
+void
+ENGINE_register_all_EC(void)
+{
+        ENGINE *e;
+
+        for (e = ENGINE_get_first(); e != NULL; e = ENGINE_get_next(e))
+                ENGINE_register_EC(e);
+}
+
+int
+ENGINE_set_default_EC(ENGINE *e)
+{
+        if (e->ec_meth != NULL)
+                return engine_table_register(&ec_table,
+                    engine_unregister_all_EC, e, &dummy_nid, 1, 1);
+        return 1;
+}
+
+/*
+ * Exposed API function to get a functional reference from the implementation
+ * table (ie. try to get a functional reference from the tabled structural
+ * references).
+ */
+ENGINE *
+ENGINE_get_default_EC(void)
+{
+        return engine_table_select(&ec_table, dummy_nid);
+}
+
+/* Obtains an EC_KEY implementation from an ENGINE functional reference */
+const EC_KEY_METHOD *
+ENGINE_get_EC(const ENGINE *e)
+{
+        return e->ec_meth;
+}
+
+/* Sets an EC_KEY implementation in an ENGINE structure */
+int
+ENGINE_set_EC(ENGINE *e, const EC_KEY_METHOD *ec_meth)
+{
+        e->ec_meth = ec_meth;
+        return 1;
+}