PROV: Add DERlib support for ECDSA and EC keys

[thirdparty/openssl.git] / providers / common / der / der_ec.c.in

diff --git a/providers/common/der/der_ec.c.in b/providers/common/der/der_ec.c.in
new file mode 100644 (file)
index 0000000..a617651
--- /dev/null
+++ b/providers/common/der/der_ec.c.in
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <openssl/bn.h>
+#include <openssl/obj_mac.h>
+#include "prov/der_ec.h"
+
+/* Well known OIDs precompiled */
+{-
+    $OUT = oids_to_c::process_leaves('providers/common/der/EC.asn1',
+                                     { dir => $config{sourcedir},
+                                       filter => \&oids_to_c::filter_to_C });
+-}
+
+int DER_w_algorithmIdentifier_EC(WPACKET *pkt, int cont, EC_KEY *ec)
+{
+    return DER_w_begin_sequence(pkt, cont)
+        /* No parameters (yet?) */
+        && DER_w_precompiled(pkt, -1, der_oid_id_ecPublicKey,
+                             sizeof(der_oid_id_ecPublicKey))
+        && DER_w_end_sequence(pkt, cont);
+}
+
+/* Aliases so we can have a uniform MD_CASE */
+#define der_oid_id_ecdsa_with_sha1   der_oid_ecdsa_with_SHA1
+#define der_oid_id_ecdsa_with_sha224 der_oid_ecdsa_with_SHA224
+#define der_oid_id_ecdsa_with_sha256 der_oid_ecdsa_with_SHA256
+#define der_oid_id_ecdsa_with_sha384 der_oid_ecdsa_with_SHA384
+#define der_oid_id_ecdsa_with_sha512 der_oid_ecdsa_with_SHA512
+
+#define MD_CASE(name)                                                   \
+    case NID_##name:                                                    \
+        precompiled = der_oid_id_ecdsa_with_##name;                     \
+        precompiled_sz = sizeof(der_oid_id_ecdsa_with_##name);          \
+        break;
+
+int DER_w_algorithmIdentifier_ECDSA_with(WPACKET *pkt, int cont,
+                                         EC_KEY *ec, int mdnid)
+{
+    const unsigned char *precompiled = NULL;
+    size_t precompiled_sz = 0;
+
+    switch (mdnid) {
+        MD_CASE(sha1);
+        MD_CASE(sha224);
+        MD_CASE(sha256);
+        MD_CASE(sha384);
+        MD_CASE(sha512);
+        MD_CASE(sha3_224);
+        MD_CASE(sha3_256);
+        MD_CASE(sha3_384);
+        MD_CASE(sha3_512);
+    default:
+        return 0;
+    }
+
+    return DER_w_begin_sequence(pkt, cont)
+        /* No parameters (yet?) */
+        && DER_w_precompiled(pkt, -1, precompiled, precompiled_sz)
+        && DER_w_end_sequence(pkt, cont);
+}