zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/lib/libssl/openssl-1.1.1o/crypto/ec/ec_check.c b/ap/lib/libssl/openssl-1.1.1o/crypto/ec/ec_check.c
new file mode 100644
index 0000000..d0706d2
--- /dev/null
+++ b/ap/lib/libssl/openssl-1.1.1o/crypto/ec/ec_check.c
@@ -0,0 +1,72 @@
+/*
+ * Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (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 "ec_local.h"
+#include <openssl/err.h>
+
+int EC_GROUP_check(const EC_GROUP *group, BN_CTX *ctx)
+{
+ int ret = 0;
+ const BIGNUM *order;
+ BN_CTX *new_ctx = NULL;
+ EC_POINT *point = NULL;
+
+ /* Custom curves assumed to be correct */
+ if ((group->meth->flags & EC_FLAGS_CUSTOM_CURVE) != 0)
+ return 1;
+
+ if (ctx == NULL) {
+ ctx = new_ctx = BN_CTX_new();
+ if (ctx == NULL) {
+ ECerr(EC_F_EC_GROUP_CHECK, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ }
+
+ /* check the discriminant */
+ if (!EC_GROUP_check_discriminant(group, ctx)) {
+ ECerr(EC_F_EC_GROUP_CHECK, EC_R_DISCRIMINANT_IS_ZERO);
+ goto err;
+ }
+
+ /* check the generator */
+ if (group->generator == NULL) {
+ ECerr(EC_F_EC_GROUP_CHECK, EC_R_UNDEFINED_GENERATOR);
+ goto err;
+ }
+ if (EC_POINT_is_on_curve(group, group->generator, ctx) <= 0) {
+ ECerr(EC_F_EC_GROUP_CHECK, EC_R_POINT_IS_NOT_ON_CURVE);
+ goto err;
+ }
+
+ /* check the order of the generator */
+ if ((point = EC_POINT_new(group)) == NULL)
+ goto err;
+ order = EC_GROUP_get0_order(group);
+ if (order == NULL)
+ goto err;
+ if (BN_is_zero(order)) {
+ ECerr(EC_F_EC_GROUP_CHECK, EC_R_UNDEFINED_ORDER);
+ goto err;
+ }
+
+ if (!EC_POINT_mul(group, point, order, NULL, NULL, ctx))
+ goto err;
+ if (!EC_POINT_is_at_infinity(group, point)) {
+ ECerr(EC_F_EC_GROUP_CHECK, EC_R_INVALID_GROUP_ORDER);
+ goto err;
+ }
+
+ ret = 1;
+
+ err:
+ BN_CTX_free(new_ctx);
+ EC_POINT_free(point);
+ return ret;
+}