--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/curl/lib/vauth/ntlm.c	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,871 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+
+#include "curl_setup.h"
+
+#if defined(USE_NTLM) && !defined(USE_WINDOWS_SSPI)
+
+/*
+ * NTLM details:
+ *
+ * https://davenport.sourceforge.io/ntlm.html
+ * https://www.innovation.ch/java/ntlm.html
+ */
+
+#define DEBUG_ME 0
+
+#include "urldata.h"
+#include "non-ascii.h"
+#include "sendf.h"
+#include "curl_base64.h"
+#include "curl_ntlm_core.h"
+#include "curl_gethostname.h"
+#include "curl_multibyte.h"
+#include "warnless.h"
+#include "rand.h"
+#include "vtls/vtls.h"
+
+/* SSL backend-specific #if branches in this file must be kept in the order
+   documented in curl_ntlm_core. */
+#if defined(NTLM_NEEDS_NSS_INIT)
+#include "vtls/nssg.h" /* for Curl_nss_force_init() */
+#endif
+
+#define BUILDING_CURL_NTLM_MSGS_C
+#include "vauth/vauth.h"
+#include "vauth/ntlm.h"
+#include "curl_endian.h"
+#include "curl_printf.h"
+
+/* The last #include files should be: */
+#include "curl_memory.h"
+#include "memdebug.h"
+
+/* "NTLMSSP" signature is always in ASCII regardless of the platform */
+#define NTLMSSP_SIGNATURE "\x4e\x54\x4c\x4d\x53\x53\x50"
+
+#define SHORTPAIR(x) ((int)((x) & 0xff)), ((int)(((x) >> 8) & 0xff))
+#define LONGQUARTET(x) ((int)((x) & 0xff)), ((int)(((x) >> 8) & 0xff)), \
+  ((int)(((x) >> 16) & 0xff)), ((int)(((x) >> 24) & 0xff))
+
+#if DEBUG_ME
+# define DEBUG_OUT(x) x
+static void ntlm_print_flags(FILE *handle, unsigned long flags)
+{
+  if(flags & NTLMFLAG_NEGOTIATE_UNICODE)
+    fprintf(handle, "NTLMFLAG_NEGOTIATE_UNICODE ");
+  if(flags & NTLMFLAG_NEGOTIATE_OEM)
+    fprintf(handle, "NTLMFLAG_NEGOTIATE_OEM ");
+  if(flags & NTLMFLAG_REQUEST_TARGET)
+    fprintf(handle, "NTLMFLAG_REQUEST_TARGET ");
+  if(flags & (1<<3))
+    fprintf(handle, "NTLMFLAG_UNKNOWN_3 ");
+  if(flags & NTLMFLAG_NEGOTIATE_SIGN)
+    fprintf(handle, "NTLMFLAG_NEGOTIATE_SIGN ");
+  if(flags & NTLMFLAG_NEGOTIATE_SEAL)
+    fprintf(handle, "NTLMFLAG_NEGOTIATE_SEAL ");
+  if(flags & NTLMFLAG_NEGOTIATE_DATAGRAM_STYLE)
+    fprintf(handle, "NTLMFLAG_NEGOTIATE_DATAGRAM_STYLE ");
+  if(flags & NTLMFLAG_NEGOTIATE_LM_KEY)
+    fprintf(handle, "NTLMFLAG_NEGOTIATE_LM_KEY ");
+  if(flags & NTLMFLAG_NEGOTIATE_NETWARE)
+    fprintf(handle, "NTLMFLAG_NEGOTIATE_NETWARE ");
+  if(flags & NTLMFLAG_NEGOTIATE_NTLM_KEY)
+    fprintf(handle, "NTLMFLAG_NEGOTIATE_NTLM_KEY ");
+  if(flags & (1<<10))
+    fprintf(handle, "NTLMFLAG_UNKNOWN_10 ");
+  if(flags & NTLMFLAG_NEGOTIATE_ANONYMOUS)
+    fprintf(handle, "NTLMFLAG_NEGOTIATE_ANONYMOUS ");
+  if(flags & NTLMFLAG_NEGOTIATE_DOMAIN_SUPPLIED)
+    fprintf(handle, "NTLMFLAG_NEGOTIATE_DOMAIN_SUPPLIED ");
+  if(flags & NTLMFLAG_NEGOTIATE_WORKSTATION_SUPPLIED)
+    fprintf(handle, "NTLMFLAG_NEGOTIATE_WORKSTATION_SUPPLIED ");
+  if(flags & NTLMFLAG_NEGOTIATE_LOCAL_CALL)
+    fprintf(handle, "NTLMFLAG_NEGOTIATE_LOCAL_CALL ");
+  if(flags & NTLMFLAG_NEGOTIATE_ALWAYS_SIGN)
+    fprintf(handle, "NTLMFLAG_NEGOTIATE_ALWAYS_SIGN ");
+  if(flags & NTLMFLAG_TARGET_TYPE_DOMAIN)
+    fprintf(handle, "NTLMFLAG_TARGET_TYPE_DOMAIN ");
+  if(flags & NTLMFLAG_TARGET_TYPE_SERVER)
+    fprintf(handle, "NTLMFLAG_TARGET_TYPE_SERVER ");
+  if(flags & NTLMFLAG_TARGET_TYPE_SHARE)
+    fprintf(handle, "NTLMFLAG_TARGET_TYPE_SHARE ");
+  if(flags & NTLMFLAG_NEGOTIATE_NTLM2_KEY)
+    fprintf(handle, "NTLMFLAG_NEGOTIATE_NTLM2_KEY ");
+  if(flags & NTLMFLAG_REQUEST_INIT_RESPONSE)
+    fprintf(handle, "NTLMFLAG_REQUEST_INIT_RESPONSE ");
+  if(flags & NTLMFLAG_REQUEST_ACCEPT_RESPONSE)
+    fprintf(handle, "NTLMFLAG_REQUEST_ACCEPT_RESPONSE ");
+  if(flags & NTLMFLAG_REQUEST_NONNT_SESSION_KEY)
+    fprintf(handle, "NTLMFLAG_REQUEST_NONNT_SESSION_KEY ");
+  if(flags & NTLMFLAG_NEGOTIATE_TARGET_INFO)
+    fprintf(handle, "NTLMFLAG_NEGOTIATE_TARGET_INFO ");
+  if(flags & (1<<24))
+    fprintf(handle, "NTLMFLAG_UNKNOWN_24 ");
+  if(flags & (1<<25))
+    fprintf(handle, "NTLMFLAG_UNKNOWN_25 ");
+  if(flags & (1<<26))
+    fprintf(handle, "NTLMFLAG_UNKNOWN_26 ");
+  if(flags & (1<<27))
+    fprintf(handle, "NTLMFLAG_UNKNOWN_27 ");
+  if(flags & (1<<28))
+    fprintf(handle, "NTLMFLAG_UNKNOWN_28 ");
+  if(flags & NTLMFLAG_NEGOTIATE_128)
+    fprintf(handle, "NTLMFLAG_NEGOTIATE_128 ");
+  if(flags & NTLMFLAG_NEGOTIATE_KEY_EXCHANGE)
+    fprintf(handle, "NTLMFLAG_NEGOTIATE_KEY_EXCHANGE ");
+  if(flags & NTLMFLAG_NEGOTIATE_56)
+    fprintf(handle, "NTLMFLAG_NEGOTIATE_56 ");
+}
+
+static void ntlm_print_hex(FILE *handle, const char *buf, size_t len)
+{
+  const char *p = buf;
+
+  (void) handle;
+
+  fprintf(stderr, "0x");
+  while(len-- > 0)
+    fprintf(stderr, "%02.2x", (unsigned int)*p++);
+}
+#else
+# define DEBUG_OUT(x) Curl_nop_stmt
+#endif
+
+/*
+ * ntlm_decode_type2_target()
+ *
+ * This is used to decode the "target info" in the NTLM type-2 message
+ * received.
+ *
+ * Parameters:
+ *
+ * data      [in]     - The session handle.
+ * buffer    [in]     - The decoded type-2 message.
+ * size      [in]     - The input buffer size, at least 32 bytes.
+ * ntlm      [in/out] - The NTLM data struct being used and modified.
+ *
+ * Returns CURLE_OK on success.
+ */
+static CURLcode ntlm_decode_type2_target(struct Curl_easy *data,
+                                         unsigned char *buffer,
+                                         size_t size,
+                                         struct ntlmdata *ntlm)
+{
+  unsigned short target_info_len = 0;
+  unsigned int target_info_offset = 0;
+
+#if defined(CURL_DISABLE_VERBOSE_STRINGS)
+  (void) data;
+#endif
+
+  if(size >= 48) {
+    target_info_len = Curl_read16_le(&buffer[40]);
+    target_info_offset = Curl_read32_le(&buffer[44]);
+    if(target_info_len > 0) {
+      if((target_info_offset >= size) ||
+         ((target_info_offset + target_info_len) > size) ||
+         (target_info_offset < 48)) {
+        infof(data, "NTLM handshake failure (bad type-2 message). "
+              "Target Info Offset Len is set incorrect by the peer\n");
+        return CURLE_BAD_CONTENT_ENCODING;
+      }
+
+      ntlm->target_info = malloc(target_info_len);
+      if(!ntlm->target_info)
+        return CURLE_OUT_OF_MEMORY;
+
+      memcpy(ntlm->target_info, &buffer[target_info_offset], target_info_len);
+    }
+  }
+
+  ntlm->target_info_len = target_info_len;
+
+  return CURLE_OK;
+}
+
+/*
+  NTLM message structure notes:
+
+  A 'short' is a 'network short', a little-endian 16-bit unsigned value.
+
+  A 'long' is a 'network long', a little-endian, 32-bit unsigned value.
+
+  A 'security buffer' represents a triplet used to point to a buffer,
+  consisting of two shorts and one long:
+
+    1. A 'short' containing the length of the buffer content in bytes.
+    2. A 'short' containing the allocated space for the buffer in bytes.
+    3. A 'long' containing the offset to the start of the buffer in bytes,
+       from the beginning of the NTLM message.
+*/
+
+/*
+ * Curl_auth_is_ntlm_supported()
+ *
+ * This is used to evaluate if NTLM is supported.
+ *
+ * Parameters: None
+ *
+ * Returns TRUE as NTLM as handled by libcurl.
+ */
+bool Curl_auth_is_ntlm_supported(void)
+{
+  return TRUE;
+}
+
+/*
+ * Curl_auth_decode_ntlm_type2_message()
+ *
+ * This is used to decode an already encoded NTLM type-2 message. The message
+ * is first decoded from a base64 string into a raw NTLM message and checked
+ * for validity before the appropriate data for creating a type-3 message is
+ * written to the given NTLM data structure.
+ *
+ * Parameters:
+ *
+ * data     [in]     - The session handle.
+ * type2msg [in]     - The base64 encoded type-2 message.
+ * ntlm     [in/out] - The NTLM data struct being used and modified.
+ *
+ * Returns CURLE_OK on success.
+ */
+CURLcode Curl_auth_decode_ntlm_type2_message(struct Curl_easy *data,
+                                             const char *type2msg,
+                                             struct ntlmdata *ntlm)
+{
+  static const char type2_marker[] = { 0x02, 0x00, 0x00, 0x00 };
+
+  /* NTLM type-2 message structure:
+
+          Index  Description            Content
+            0    NTLMSSP Signature      Null-terminated ASCII "NTLMSSP"
+                                        (0x4e544c4d53535000)
+            8    NTLM Message Type      long (0x02000000)
+           12    Target Name            security buffer
+           20    Flags                  long
+           24    Challenge              8 bytes
+          (32)   Context                8 bytes (two consecutive longs) (*)
+          (40)   Target Information     security buffer (*)
+          (48)   OS Version Structure   8 bytes (*)
+  32 (48) (56)   Start of data block    (*)
+                                        (*) -> Optional
+  */
+
+  CURLcode result = CURLE_OK;
+  unsigned char *type2 = NULL;
+  size_t type2_len = 0;
+
+#if defined(NTLM_NEEDS_NSS_INIT)
+  /* Make sure the crypto backend is initialized */
+  result = Curl_nss_force_init(data);
+  if(result)
+    return result;
+#elif defined(CURL_DISABLE_VERBOSE_STRINGS)
+  (void)data;
+#endif
+
+  /* Decode the base-64 encoded type-2 message */
+  if(strlen(type2msg) && *type2msg != '=') {
+    result = Curl_base64_decode(type2msg, &type2, &type2_len);
+    if(result)
+      return result;
+  }
+
+  /* Ensure we have a valid type-2 message */
+  if(!type2) {
+    infof(data, "NTLM handshake failure (empty type-2 message)\n");
+    return CURLE_BAD_CONTENT_ENCODING;
+  }
+
+  ntlm->flags = 0;
+
+  if((type2_len < 32) ||
+     (memcmp(type2, NTLMSSP_SIGNATURE, 8) != 0) ||
+     (memcmp(type2 + 8, type2_marker, sizeof(type2_marker)) != 0)) {
+    /* This was not a good enough type-2 message */
+    free(type2);
+    infof(data, "NTLM handshake failure (bad type-2 message)\n");
+    return CURLE_BAD_CONTENT_ENCODING;
+  }
+
+  ntlm->flags = Curl_read32_le(&type2[20]);
+  memcpy(ntlm->nonce, &type2[24], 8);
+
+  if(ntlm->flags & NTLMFLAG_NEGOTIATE_TARGET_INFO) {
+    result = ntlm_decode_type2_target(data, type2, type2_len, ntlm);
+    if(result) {
+      free(type2);
+      infof(data, "NTLM handshake failure (bad type-2 message)\n");
+      return result;
+    }
+  }
+
+  DEBUG_OUT({
+    fprintf(stderr, "**** TYPE2 header flags=0x%08.8lx ", ntlm->flags);
+    ntlm_print_flags(stderr, ntlm->flags);
+    fprintf(stderr, "\n                  nonce=");
+    ntlm_print_hex(stderr, (char *)ntlm->nonce, 8);
+    fprintf(stderr, "\n****\n");
+    fprintf(stderr, "**** Header %s\n ", header);
+  });
+
+  free(type2);
+
+  return result;
+}
+
+/* copy the source to the destination and fill in zeroes in every
+   other destination byte! */
+static void unicodecpy(unsigned char *dest, const char *src, size_t length)
+{
+  size_t i;
+  for(i = 0; i < length; i++) {
+    dest[2 * i] = (unsigned char)src[i];
+    dest[2 * i + 1] = '\0';
+  }
+}
+
+/*
+ * Curl_auth_create_ntlm_type1_message()
+ *
+ * This is used to generate an already encoded NTLM type-1 message ready for
+ * sending to the recipient using the appropriate compile time crypto API.
+ *
+ * Parameters:
+ *
+ * data    [in]     - The session handle.
+ * userp   [in]     - The user name in the format User or Domain\User.
+ * passwdp [in]     - The user's password.
+ * service [in]     - The service type such as http, smtp, pop or imap.
+ * host    [in]     - The host name.
+ * ntlm    [in/out] - The NTLM data struct being used and modified.
+ * outptr  [in/out] - The address where a pointer to newly allocated memory
+ *                    holding the result will be stored upon completion.
+ * outlen  [out]    - The length of the output message.
+ *
+ * Returns CURLE_OK on success.
+ */
+CURLcode Curl_auth_create_ntlm_type1_message(struct Curl_easy *data,
+                                             const char *userp,
+                                             const char *passwdp,
+                                             const char *service,
+                                             const char *hostname,
+                                             struct ntlmdata *ntlm,
+                                             char **outptr, size_t *outlen)
+{
+  /* NTLM type-1 message structure:
+
+       Index  Description            Content
+         0    NTLMSSP Signature      Null-terminated ASCII "NTLMSSP"
+                                     (0x4e544c4d53535000)
+         8    NTLM Message Type      long (0x01000000)
+        12    Flags                  long
+       (16)   Supplied Domain        security buffer (*)
+       (24)   Supplied Workstation   security buffer (*)
+       (32)   OS Version Structure   8 bytes (*)
+  (32) (40)   Start of data block    (*)
+                                     (*) -> Optional
+  */
+
+  size_t size;
+
+  unsigned char ntlmbuf[NTLM_BUFSIZE];
+  const char *host = "";              /* empty */
+  const char *domain = "";            /* empty */
+  size_t hostlen = 0;
+  size_t domlen = 0;
+  size_t hostoff = 0;
+  size_t domoff = hostoff + hostlen;  /* This is 0: remember that host and
+                                         domain are empty */
+  (void)userp;
+  (void)passwdp;
+  (void)service,
+  (void)hostname,
+
+  /* Clean up any former leftovers and initialise to defaults */
+  Curl_auth_cleanup_ntlm(ntlm);
+
+#if defined(USE_NTRESPONSES) && defined(USE_NTLM2SESSION)
+#define NTLM2FLAG NTLMFLAG_NEGOTIATE_NTLM2_KEY
+#else
+#define NTLM2FLAG 0
+#endif
+  msnprintf((char *)ntlmbuf, NTLM_BUFSIZE,
+            NTLMSSP_SIGNATURE "%c"
+            "\x01%c%c%c" /* 32-bit type = 1 */
+            "%c%c%c%c"   /* 32-bit NTLM flag field */
+            "%c%c"       /* domain length */
+            "%c%c"       /* domain allocated space */
+            "%c%c"       /* domain name offset */
+            "%c%c"       /* 2 zeroes */
+            "%c%c"       /* host length */
+            "%c%c"       /* host allocated space */
+            "%c%c"       /* host name offset */
+            "%c%c"       /* 2 zeroes */
+            "%s"         /* host name */
+            "%s",        /* domain string */
+            0,           /* trailing zero */
+            0, 0, 0,     /* part of type-1 long */
+
+            LONGQUARTET(NTLMFLAG_NEGOTIATE_OEM |
+                        NTLMFLAG_REQUEST_TARGET |
+                        NTLMFLAG_NEGOTIATE_NTLM_KEY |
+                        NTLM2FLAG |
+                        NTLMFLAG_NEGOTIATE_ALWAYS_SIGN),
+            SHORTPAIR(domlen),
+            SHORTPAIR(domlen),
+            SHORTPAIR(domoff),
+            0, 0,
+            SHORTPAIR(hostlen),
+            SHORTPAIR(hostlen),
+            SHORTPAIR(hostoff),
+            0, 0,
+            host,  /* this is empty */
+            domain /* this is empty */);
+
+  /* Initial packet length */
+  size = 32 + hostlen + domlen;
+
+  DEBUG_OUT({
+    fprintf(stderr, "* TYPE1 header flags=0x%02.2x%02.2x%02.2x%02.2x "
+            "0x%08.8x ",
+            LONGQUARTET(NTLMFLAG_NEGOTIATE_OEM |
+                        NTLMFLAG_REQUEST_TARGET |
+                        NTLMFLAG_NEGOTIATE_NTLM_KEY |
+                        NTLM2FLAG |
+                        NTLMFLAG_NEGOTIATE_ALWAYS_SIGN),
+            NTLMFLAG_NEGOTIATE_OEM |
+            NTLMFLAG_REQUEST_TARGET |
+            NTLMFLAG_NEGOTIATE_NTLM_KEY |
+            NTLM2FLAG |
+            NTLMFLAG_NEGOTIATE_ALWAYS_SIGN);
+    ntlm_print_flags(stderr,
+                     NTLMFLAG_NEGOTIATE_OEM |
+                     NTLMFLAG_REQUEST_TARGET |
+                     NTLMFLAG_NEGOTIATE_NTLM_KEY |
+                     NTLM2FLAG |
+                     NTLMFLAG_NEGOTIATE_ALWAYS_SIGN);
+    fprintf(stderr, "\n****\n");
+  });
+
+  /* Return with binary blob encoded into base64 */
+  return Curl_base64_encode(data, (char *)ntlmbuf, size, outptr, outlen);
+}
+
+/*
+ * Curl_auth_create_ntlm_type3_message()
+ *
+ * This is used to generate an already encoded NTLM type-3 message ready for
+ * sending to the recipient using the appropriate compile time crypto API.
+ *
+ * Parameters:
+ *
+ * data    [in]     - The session handle.
+ * userp   [in]     - The user name in the format User or Domain\User.
+ * passwdp [in]     - The user's password.
+ * ntlm    [in/out] - The NTLM data struct being used and modified.
+ * outptr  [in/out] - The address where a pointer to newly allocated memory
+ *                    holding the result will be stored upon completion.
+ * outlen  [out]    - The length of the output message.
+ *
+ * Returns CURLE_OK on success.
+ */
+CURLcode Curl_auth_create_ntlm_type3_message(struct Curl_easy *data,
+                                             const char *userp,
+                                             const char *passwdp,
+                                             struct ntlmdata *ntlm,
+                                             char **outptr, size_t *outlen)
+
+{
+  /* NTLM type-3 message structure:
+
+          Index  Description            Content
+            0    NTLMSSP Signature      Null-terminated ASCII "NTLMSSP"
+                                        (0x4e544c4d53535000)
+            8    NTLM Message Type      long (0x03000000)
+           12    LM/LMv2 Response       security buffer
+           20    NTLM/NTLMv2 Response   security buffer
+           28    Target Name            security buffer
+           36    User Name              security buffer
+           44    Workstation Name       security buffer
+          (52)   Session Key            security buffer (*)
+          (60)   Flags                  long (*)
+          (64)   OS Version Structure   8 bytes (*)
+  52 (64) (72)   Start of data block
+                                          (*) -> Optional
+  */
+
+  CURLcode result = CURLE_OK;
+  size_t size;
+  unsigned char ntlmbuf[NTLM_BUFSIZE];
+  int lmrespoff;
+  unsigned char lmresp[24]; /* fixed-size */
+#ifdef USE_NTRESPONSES
+  int ntrespoff;
+  unsigned int ntresplen = 24;
+  unsigned char ntresp[24]; /* fixed-size */
+  unsigned char *ptr_ntresp = &ntresp[0];
+  unsigned char *ntlmv2resp = NULL;
+#endif
+  bool unicode = (ntlm->flags & NTLMFLAG_NEGOTIATE_UNICODE) ? TRUE : FALSE;
+  char host[HOSTNAME_MAX + 1] = "";
+  const char *user;
+  const char *domain = "";
+  size_t hostoff = 0;
+  size_t useroff = 0;
+  size_t domoff = 0;
+  size_t hostlen = 0;
+  size_t userlen = 0;
+  size_t domlen = 0;
+
+  user = strchr(userp, '\\');
+  if(!user)
+    user = strchr(userp, '/');
+
+  if(user) {
+    domain = userp;
+    domlen = (user - domain);
+    user++;
+  }
+  else
+    user = userp;
+
+  userlen = strlen(user);
+
+  /* Get the machine's un-qualified host name as NTLM doesn't like the fully
+     qualified domain name */
+  if(Curl_gethostname(host, sizeof(host))) {
+    infof(data, "gethostname() failed, continuing without!\n");
+    hostlen = 0;
+  }
+  else {
+    hostlen = strlen(host);
+  }
+
+#if defined(USE_NTRESPONSES) && defined(USE_NTLM_V2)
+  if(ntlm->flags & NTLMFLAG_NEGOTIATE_NTLM2_KEY) {
+    unsigned char ntbuffer[0x18];
+    unsigned char entropy[8];
+    unsigned char ntlmv2hash[0x18];
+
+    result = Curl_rand(data, entropy, 8);
+    if(result)
+      return result;
+
+    result = Curl_ntlm_core_mk_nt_hash(data, passwdp, ntbuffer);
+    if(result)
+      return result;
+
+    result = Curl_ntlm_core_mk_ntlmv2_hash(user, userlen, domain, domlen,
+                                           ntbuffer, ntlmv2hash);
+    if(result)
+      return result;
+
+    /* LMv2 response */
+    result = Curl_ntlm_core_mk_lmv2_resp(ntlmv2hash, entropy,
+                                         &ntlm->nonce[0], lmresp);
+    if(result)
+      return result;
+
+    /* NTLMv2 response */
+    result = Curl_ntlm_core_mk_ntlmv2_resp(ntlmv2hash, entropy,
+                                           ntlm, &ntlmv2resp, &ntresplen);
+    if(result)
+      return result;
+
+    ptr_ntresp = ntlmv2resp;
+  }
+  else
+#endif
+
+#if defined(USE_NTRESPONSES) && defined(USE_NTLM2SESSION)
+  /* We don't support NTLM2 if we don't have USE_NTRESPONSES */
+  if(ntlm->flags & NTLMFLAG_NEGOTIATE_NTLM_KEY) {
+    unsigned char ntbuffer[0x18];
+    unsigned char tmp[0x18];
+    unsigned char md5sum[MD5_DIGEST_LENGTH];
+    unsigned char entropy[8];
+
+    /* Need to create 8 bytes random data */
+    result = Curl_rand(data, entropy, 8);
+    if(result)
+      return result;
+
+    /* 8 bytes random data as challenge in lmresp */
+    memcpy(lmresp, entropy, 8);
+
+    /* Pad with zeros */
+    memset(lmresp + 8, 0, 0x10);
+
+    /* Fill tmp with challenge(nonce?) + entropy */
+    memcpy(tmp, &ntlm->nonce[0], 8);
+    memcpy(tmp + 8, entropy, 8);
+
+    result = Curl_ssl_md5sum(tmp, 16, md5sum, MD5_DIGEST_LENGTH);
+    if(!result)
+      /* We shall only use the first 8 bytes of md5sum, but the des code in
+         Curl_ntlm_core_lm_resp only encrypt the first 8 bytes */
+      result = Curl_ntlm_core_mk_nt_hash(data, passwdp, ntbuffer);
+    if(result)
+      return result;
+
+    Curl_ntlm_core_lm_resp(ntbuffer, md5sum, ntresp);
+
+    /* End of NTLM2 Session code */
+    /* NTLM v2 session security is a misnomer because it is not NTLM v2.
+       It is NTLM v1 using the extended session security that is also
+       in NTLM v2 */
+  }
+  else
+#endif
+  {
+
+#ifdef USE_NTRESPONSES
+    unsigned char ntbuffer[0x18];
+#endif
+    unsigned char lmbuffer[0x18];
+
+#ifdef USE_NTRESPONSES
+    result = Curl_ntlm_core_mk_nt_hash(data, passwdp, ntbuffer);
+    if(result)
+      return result;
+
+    Curl_ntlm_core_lm_resp(ntbuffer, &ntlm->nonce[0], ntresp);
+#endif
+
+    result = Curl_ntlm_core_mk_lm_hash(data, passwdp, lmbuffer);
+    if(result)
+      return result;
+
+    Curl_ntlm_core_lm_resp(lmbuffer, &ntlm->nonce[0], lmresp);
+
+    /* A safer but less compatible alternative is:
+     *   Curl_ntlm_core_lm_resp(ntbuffer, &ntlm->nonce[0], lmresp);
+     * See https://davenport.sourceforge.io/ntlm.html#ntlmVersion2 */
+  }
+
+  if(unicode) {
+    domlen = domlen * 2;
+    userlen = userlen * 2;
+    hostlen = hostlen * 2;
+  }
+
+  lmrespoff = 64; /* size of the message header */
+#ifdef USE_NTRESPONSES
+  ntrespoff = lmrespoff + 0x18;
+  domoff = ntrespoff + ntresplen;
+#else
+  domoff = lmrespoff + 0x18;
+#endif
+  useroff = domoff + domlen;
+  hostoff = useroff + userlen;
+
+  /* Create the big type-3 message binary blob */
+  size = msnprintf((char *)ntlmbuf, NTLM_BUFSIZE,
+                   NTLMSSP_SIGNATURE "%c"
+                   "\x03%c%c%c"  /* 32-bit type = 3 */
+
+                   "%c%c"  /* LanManager length */
+                   "%c%c"  /* LanManager allocated space */
+                   "%c%c"  /* LanManager offset */
+                   "%c%c"  /* 2 zeroes */
+
+                   "%c%c"  /* NT-response length */
+                   "%c%c"  /* NT-response allocated space */
+                   "%c%c"  /* NT-response offset */
+                   "%c%c"  /* 2 zeroes */
+
+                   "%c%c"  /* domain length */
+                   "%c%c"  /* domain allocated space */
+                   "%c%c"  /* domain name offset */
+                   "%c%c"  /* 2 zeroes */
+
+                   "%c%c"  /* user length */
+                   "%c%c"  /* user allocated space */
+                   "%c%c"  /* user offset */
+                   "%c%c"  /* 2 zeroes */
+
+                   "%c%c"  /* host length */
+                   "%c%c"  /* host allocated space */
+                   "%c%c"  /* host offset */
+                   "%c%c"  /* 2 zeroes */
+
+                   "%c%c"  /* session key length (unknown purpose) */
+                   "%c%c"  /* session key allocated space (unknown purpose) */
+                   "%c%c"  /* session key offset (unknown purpose) */
+                   "%c%c"  /* 2 zeroes */
+
+                   "%c%c%c%c",  /* flags */
+
+                   /* domain string */
+                   /* user string */
+                   /* host string */
+                   /* LanManager response */
+                   /* NT response */
+
+                   0,                /* zero termination */
+                   0, 0, 0,          /* type-3 long, the 24 upper bits */
+
+                   SHORTPAIR(0x18),  /* LanManager response length, twice */
+                   SHORTPAIR(0x18),
+                   SHORTPAIR(lmrespoff),
+                   0x0, 0x0,
+
+#ifdef USE_NTRESPONSES
+                   SHORTPAIR(ntresplen),  /* NT-response length, twice */
+                   SHORTPAIR(ntresplen),
+                   SHORTPAIR(ntrespoff),
+                   0x0, 0x0,
+#else
+                   0x0, 0x0,
+                   0x0, 0x0,
+                   0x0, 0x0,
+                   0x0, 0x0,
+#endif
+                   SHORTPAIR(domlen),
+                   SHORTPAIR(domlen),
+                   SHORTPAIR(domoff),
+                   0x0, 0x0,
+
+                   SHORTPAIR(userlen),
+                   SHORTPAIR(userlen),
+                   SHORTPAIR(useroff),
+                   0x0, 0x0,
+
+                   SHORTPAIR(hostlen),
+                   SHORTPAIR(hostlen),
+                   SHORTPAIR(hostoff),
+                   0x0, 0x0,
+
+                   0x0, 0x0,
+                   0x0, 0x0,
+                   0x0, 0x0,
+                   0x0, 0x0,
+
+                   LONGQUARTET(ntlm->flags));
+
+  DEBUGASSERT(size == 64);
+  DEBUGASSERT(size == (size_t)lmrespoff);
+
+  /* We append the binary hashes */
+  if(size < (NTLM_BUFSIZE - 0x18)) {
+    memcpy(&ntlmbuf[size], lmresp, 0x18);
+    size += 0x18;
+  }
+
+  DEBUG_OUT({
+    fprintf(stderr, "**** TYPE3 header lmresp=");
+    ntlm_print_hex(stderr, (char *)&ntlmbuf[lmrespoff], 0x18);
+  });
+
+#ifdef USE_NTRESPONSES
+  /* ntresplen + size should not be risking an integer overflow here */
+  if(ntresplen + size > sizeof(ntlmbuf)) {
+    failf(data, "incoming NTLM message too big");
+    return CURLE_OUT_OF_MEMORY;
+  }
+  DEBUGASSERT(size == (size_t)ntrespoff);
+  memcpy(&ntlmbuf[size], ptr_ntresp, ntresplen);
+  size += ntresplen;
+
+  DEBUG_OUT({
+    fprintf(stderr, "\n   ntresp=");
+    ntlm_print_hex(stderr, (char *)&ntlmbuf[ntrespoff], ntresplen);
+  });
+
+  free(ntlmv2resp);/* Free the dynamic buffer allocated for NTLMv2 */
+
+#endif
+
+  DEBUG_OUT({
+    fprintf(stderr, "\n   flags=0x%02.2x%02.2x%02.2x%02.2x 0x%08.8x ",
+            LONGQUARTET(ntlm->flags), ntlm->flags);
+    ntlm_print_flags(stderr, ntlm->flags);
+    fprintf(stderr, "\n****\n");
+  });
+
+  /* Make sure that the domain, user and host strings fit in the
+     buffer before we copy them there. */
+  if(size + userlen + domlen + hostlen >= NTLM_BUFSIZE) {
+    failf(data, "user + domain + host name too big");
+    return CURLE_OUT_OF_MEMORY;
+  }
+
+  DEBUGASSERT(size == domoff);
+  if(unicode)
+    unicodecpy(&ntlmbuf[size], domain, domlen / 2);
+  else
+    memcpy(&ntlmbuf[size], domain, domlen);
+
+  size += domlen;
+
+  DEBUGASSERT(size == useroff);
+  if(unicode)
+    unicodecpy(&ntlmbuf[size], user, userlen / 2);
+  else
+    memcpy(&ntlmbuf[size], user, userlen);
+
+  size += userlen;
+
+  DEBUGASSERT(size == hostoff);
+  if(unicode)
+    unicodecpy(&ntlmbuf[size], host, hostlen / 2);
+  else
+    memcpy(&ntlmbuf[size], host, hostlen);
+
+  size += hostlen;
+
+  /* Convert domain, user, and host to ASCII but leave the rest as-is */
+  result = Curl_convert_to_network(data, (char *)&ntlmbuf[domoff],
+                                   size - domoff);
+  if(result)
+    return CURLE_CONV_FAILED;
+
+  /* Return with binary blob encoded into base64 */
+  result = Curl_base64_encode(data, (char *)ntlmbuf, size, outptr, outlen);
+
+  Curl_auth_cleanup_ntlm(ntlm);
+
+  return result;
+}
+
+/*
+ * Curl_auth_cleanup_ntlm()
+ *
+ * This is used to clean up the NTLM specific data.
+ *
+ * Parameters:
+ *
+ * ntlm    [in/out] - The NTLM data struct being cleaned up.
+ *
+ */
+void Curl_auth_cleanup_ntlm(struct ntlmdata *ntlm)
+{
+  /* Free the target info */
+  Curl_safefree(ntlm->target_info);
+
+  /* Reset any variables */
+  ntlm->target_info_len = 0;
+}
+
+#endif /* USE_NTLM && !USE_WINDOWS_SSPI */