add ec

code need some updates

crypto/sm2/sm2_kmeth.c

@@ -0,0 +1,191 @@
+/*
+ * Copyright (c) 2016 The GmSSL 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 GmSSL Project.
+ *    (http://gmssl.org/)"
+ *
+ * 4. The name "GmSSL Project" must not be used to endorse or promote
+ *    products derived from this software without prior written
+ *    permission. For written permission, please contact
+ *    guanzhi1980@gmail.com.
+ *
+ * 5. Products derived from this software may not be called "GmSSL"
+ *    nor may "GmSSL" appear in their names without prior written
+ *    permission of the GmSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the GmSSL Project
+ *    (http://gmssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE GmSSL 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 GmSSL 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.
+ */
+
+#include <string.h>
+#include <openssl/ec.h>
+#include <openssl/engine.h>
+#include <openssl/err.h>
+#include <openssl/sm2.h>
+#include <openssl/ecies.h>
+#include "../ec/ec_lcl.h"
+
+#define SM2_KMETH_FLAGS		0
+
+int SM2_ENC_PARAMS_set_type(SM2_ENC_PARAMS *params, int type)
+{
+	// FIXME:
+	ECerr(EC_F_SM2_ENC_PARAMS_SET_TYPE, ERR_R_EVP_LIB);
+	return 0;
+}
+
+SM2_CIPHERTEXT_VALUE *SM2_CIPHERTEXT_VALUE_new_from_ECIES_CIPHERTEXT_VALUE(
+	const ECIES_CIPHERTEXT_VALUE *in)
+{
+	ECerr(EC_F_SM2_CIPHERTEXT_VALUE_NEW_FROM_ECIES_CIPHERTEXT_VALUE,
+		ERR_R_EC_LIB);
+	return NULL;
+}
+
+int SM2_CIPHERTEXT_VALUE_set_ECIES_CIPHERTEXT_VALUE(SM2_CIPHERTEXT_VALUE *sm2,
+	const ECIES_CIPHERTEXT_VALUE *in)
+{
+	ECerr(EC_F_SM2_CIPHERTEXT_VALUE_SET_ECIES_CIPHERTEXT_VALUE,
+		ERR_R_EC_LIB);
+	return 0;
+}
+
+int SM2_CIPHERTEXT_VALUE_get_ECIES_CIPHERTEXT_VALUE(
+	const SM2_CIPHERTEXT_VALUE *sm2, ECIES_CIPHERTEXT_VALUE *out)
+{
+	ECerr(EC_F_SM2_CIPHERTEXT_VALUE_GET_ECIES_CIPHERTEXT_VALUE,
+		ERR_R_EC_LIB);
+	return 0;
+}
+
+static int sm2_compute_key(unsigned char **Pout, size_t *poutlen,
+	const EC_POINT *pub_key, const EC_KEY *ec_key)
+{
+	return 0;
+}
+
+static int sm2_encrypt(int type, const unsigned char *in, size_t inlen,
+	unsigned char *out, size_t *outlen, EC_KEY *ec_key)
+{
+	SM2_ENC_PARAMS param;
+	if (!SM2_ENC_PARAMS_set_type(&param, type)) {
+		return 0;
+	}
+	return SM2_encrypt(&param, in, inlen, out, outlen, ec_key);
+}
+
+ECIES_CIPHERTEXT_VALUE *sm2_do_encrypt(int type, const unsigned char *in,
+	size_t inlen, EC_KEY *ec_key)
+{
+	ECIES_CIPHERTEXT_VALUE *ret = NULL;
+	ECIES_CIPHERTEXT_VALUE *ecies = NULL;
+	SM2_CIPHERTEXT_VALUE *sm2 = NULL;
+	SM2_ENC_PARAMS param;
+
+	if (!(ecies = ECIES_CIPHERTEXT_VALUE_new())) {
+		goto end;
+	}
+	if (!SM2_ENC_PARAMS_set_type(&param, type)) {
+		goto end;
+	}
+	if (!(sm2 = SM2_do_encrypt(&param, in, inlen, ec_key))) {
+		goto end;
+	}
+	if (!SM2_CIPHERTEXT_VALUE_get_ECIES_CIPHERTEXT_VALUE(sm2, ecies)) {
+		goto end;
+	}
+
+	ret = ecies;
+	ecies = NULL;
+
+end:
+	ECIES_CIPHERTEXT_VALUE_free(ecies);
+	SM2_CIPHERTEXT_VALUE_free(sm2);
+	return ret;
+}
+
+int sm2_decrypt(int type, const unsigned char *in, size_t inlen,
+	unsigned char *out, size_t *outlen, EC_KEY *ec_key)
+{
+	SM2_ENC_PARAMS param;
+	if (!SM2_ENC_PARAMS_set_type(&param, type)) {
+		return 0;
+	}
+	return SM2_decrypt(&param, in, inlen, out, outlen, ec_key);
+}
+
+int sm2_do_decrypt(int type, const ECIES_CIPHERTEXT_VALUE *in,
+	unsigned char *out, size_t *outlen, EC_KEY *ec_key)
+{
+	int ret = 0;
+	SM2_CIPHERTEXT_VALUE *sm2 = NULL;
+	SM2_ENC_PARAMS param;
+
+	if (!SM2_ENC_PARAMS_set_type(&param, type)) {
+		goto end;
+	}
+	// we might require type/param
+	if (!(sm2 = SM2_CIPHERTEXT_VALUE_new_from_ECIES_CIPHERTEXT_VALUE(in))) {
+		goto end;
+	}
+	if (!SM2_do_decrypt(&param, sm2, out, outlen, ec_key)) {
+		goto end;
+	}
+
+	ret = 1;
+end:
+	SM2_CIPHERTEXT_VALUE_free(sm2);
+	return ret;
+}
+
+static const EC_KEY_METHOD gmssl_ec_key_method = {
+	"GmSSL EC_KEY method",
+	0,
+	0,0,0,0,0,0,
+	ossl_ec_key_gen,
+	sm2_compute_key,
+	SM2_sign,
+	SM2_sign_setup,
+	SM2_do_sign,
+	SM2_verify,
+	SM2_do_verify,
+	sm2_encrypt,
+	sm2_do_encrypt,
+	sm2_decrypt,
+	sm2_do_decrypt,
+};
+
+const EC_KEY_METHOD *EC_KEY_GmSSL(void)
+{
+    return &gmssl_ec_key_method;
+}
+