feat: add gmssl headers

include/gmssl/ec.h

@@ -0,0 +1,64 @@
+/*
+ *  Copyright 2014-2022 The GmSSL Project. All Rights Reserved.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the License); you may
+ *  not use this file except in compliance with the License.
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ */
+
+
+#ifndef GMSSL_EC_H
+#define GMSSL_EC_H
+
+
+#include <time.h>
+#include <string.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <gmssl/sm2.h>
+#include <gmssl/oid.h>
+#include <gmssl/asn1.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+NamedCurve:
+	OID_sm2
+	OID_prime192v1
+	OID_prime256v1
+	OID_secp256k1
+	OID_secp384r1
+	OID_secp521r1
+*/
+const char *ec_named_curve_name(int curve);
+int ec_named_curve_from_name(const char *name);
+int ec_named_curve_to_der(int curve, uint8_t **out, size_t *outlen);
+int ec_named_curve_from_der(int *curve, const uint8_t **in, size_t *inlen);
+
+/*
+ECPoint ::= OCTET STRING -- uncompressed point
+*/
+int ec_point_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *d, size_t dlen);
+
+/*
+ECPrivateKey ::= SEQUENCE {
+	version		INTEGER,	-- value MUST be (1)
+	privateKey	OCTET STRING,	-- big endian encoding of integer
+	parameters	[0] EXPLICIT OBJECT IDENTIFIER OPTIONAL, -- namedCurve
+	publicKey	[1] EXPLICIT BIT STRING OPTIONAL -- ECPoint
+}
+*/
+
+enum {
+	EC_private_key_version = 1,
+};
+
+int ec_private_key_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *d, size_t dlen);
+
+#ifdef __cplusplus
+}
+#endif
+#endif