Remove nettle library from OAI, support OpenSSL 3.0 and 1.1

Add byte_array_t structure under common/

common/utils/ds/byte_array.c

@@ -0,0 +1,58 @@
+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this file
+ * except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+#include "byte_array.h"
+
+#include "common/utils/assertions.h"
+#include <string.h>
+
+byte_array_t copy_byte_array(byte_array_t src)
+{
+  byte_array_t dst = {0};
+  dst.buf = malloc(src.len);
+  DevAssert(dst.buf != NULL && "Memory exhausted");
+  memcpy(dst.buf, src.buf, src.len);
+  dst.len = src.len;
+  return dst;
+}
+
+void free_byte_array(byte_array_t ba)
+{
+  free(ba.buf);
+}
+
+bool eq_byte_array(const byte_array_t* m0, const byte_array_t* m1)
+{
+  if (m0 == m1)
+    return true;
+
+  if (m0 == NULL || m1 == NULL)
+    return false;
+
+  if (m0->len != m1->len)
+    return false;
+
+  const int rc = memcmp(m0->buf, m1->buf, m0->len);
+  if (rc != 0)
+    return false;
+
+  return true;
+}