Update to libnitrokey v3.6

This patch updates libnitrokey from version 3.5 to version 3.6, causing
these changes:

- New constants:
  - `NK_device_model_NK_LIBREM` (`NK_device_model` enum)
- New structures:
  - `NK_config`
- New functions:
  - `NK_device_serial_number_as_u32`
  - `NK_write_config_struct`
  - `NK_free_config`
  - `NK_read_config_struct`
  - `NK_free_password_safe_slot_status`
- Deprecated functions:
  - `NK_set_unencrypted_read_only`
  - `NK_set_unencrypted_read_write`

1 files changed, 123 insertions, 0 deletions

diff --git a/libnitrokey-v3.6/misc.cc b/libnitrokey-v3.6/misc.cc
new file mode 100644
index 0000000..59185f3
--- /dev/null
+++ b/libnitrokey-v3.6/misc.cc
@@ -0,0 +1,123 @@
+/*
+ * Copyright (c) 2015-2018 Nitrokey UG
+ *
+ * This file is part of libnitrokey.
+ *
+ * libnitrokey is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * libnitrokey is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libnitrokey. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: LGPL-3.0
+ */
+
+#include <sstream>
+#include <string>
+#include "misc.h"
+#include "inttypes.h"
+#include <cstdlib>
+#include <cstring>
+#include "LibraryException.h"
+#include <vector>
+
+namespace nitrokey {
+namespace misc {
+
+
+
+::std::vector<uint8_t> hex_string_to_byte(const char* hexString){
+    const size_t big_string_size = 257; //arbitrary 'big' number
+    const size_t s_size = strnlen(hexString, big_string_size);
+    const size_t d_size = s_size/2;
+    if (s_size%2!=0 || s_size>=big_string_size){
+        throw InvalidHexString(0);
+    }
+    auto data = ::std::vector<uint8_t>();
+    data.reserve(d_size);
+
+    char buf[3];
+    buf[2] = '\0';
+    for(size_t i=0; i<s_size; i++){
+
+        char c = hexString[i];
+        bool char_from_range = (('0' <= c && c <='9') || ('A' <= c && c <= 'F') || ('a' <= c && c<= 'f'));
+        if (!char_from_range){
+            throw InvalidHexString(c);
+        }
+        buf[i%2] = c;
+        if (i%2==1){
+            data.push_back( strtoul(buf, NULL, 16) & 0xFF );
+        }
+    }
+    return data;
+};
+
+#include <cctype>
+::std::string hexdump(const uint8_t *p, size_t size, bool print_header,
+        bool print_ascii, bool print_empty) {
+  ::std::stringstream out;
+  char formatbuf[128];
+  const uint8_t *pstart = p;
+
+  for (const uint8_t *pend = p + size; p < pend;) {
+      if (print_header){
+          snprintf(formatbuf, 128, "%04x\t", static_cast<int> (p - pstart));
+          out << formatbuf;
+      }
+
+    const uint8_t* pp = p;
+    for (const uint8_t *le = p + 16; p < le; p++) {
+      if (p < pend){
+        snprintf(formatbuf, 128, "%02x ", uint8_t(*p));
+        out << formatbuf;
+      } else {
+          if(print_empty)
+            out << "-- ";
+      }
+
+    }
+      if(print_ascii){
+        out << "  ";
+        for (const uint8_t *le = pp + 16; pp < le && pp < pend; pp++) {
+          if (std::isgraph(*pp))
+            out << uint8_t(*pp);
+          else
+            out << '.';
+        }
+      }
+    out << ::std::endl;
+  }
+  return out.str();
+}
+
+static uint32_t _crc32(uint32_t crc, uint32_t data) {
+  int i;
+  crc = crc ^ data;
+
+  for (i = 0; i < 32; i++) {
+    if (crc & 0x80000000)
+      crc = (crc << 1) ^ 0x04C11DB7;  // polynomial used in STM32
+    else
+      crc = (crc << 1);
+  }
+
+  return crc;
+}
+
+uint32_t stm_crc32(const uint8_t *data, size_t size) {
+  uint32_t crc = 0xffffffff;
+  const uint32_t *pend = (const uint32_t *)(data + size);
+  for (const uint32_t *p = (const uint32_t *)(data); p < pend; p++)
+    crc = _crc32(crc, *p);
+  return crc;
+}
+}
+}