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-rw-r--r--providers/common/der/der_ec_sig.c51
1 files changed, 51 insertions, 0 deletions
diff --git a/providers/common/der/der_ec_sig.c b/providers/common/der/der_ec_sig.c
new file mode 100644
index 0000000000..687ec49c1f
--- /dev/null
+++ b/providers/common/der/der_ec_sig.c
@@ -0,0 +1,51 @@
+/*
+ * 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/obj_mac.h>
+#include "internal/packet.h"
+#include "prov/der_ec.h"
+
+/* 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_MD(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);
+}