Replace NTLMv1 implementation with a functionally equivalent one.

net/ntlm/ntlm_constants.h

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_BASE_NTLM_CONSTANTS_H_
 #define NET_BASE_NTLM_CONSTANTS_H_
 
 #include <stddef.h>
 #include <stdint.h>
 #include <type_traits>
@@ skipping 17 matching lines @@
   uint32_t offset;
   uint16_t length;
 };
 
 enum class NtlmVersion {
   NTLM_V1 = 0x01,
   NTLM_V2 = 0x02,
 };
 
 // There are 3 types of messages in NTLM. The message type is a field in
-// every NTLM message header.
+// every NTLM message header. See [MS-NLMP] Section 2.2.
 enum class MessageType : uint32_t {
   NEGOTIATE = 0x01,
   CHALLENGE = 0x02,
   AUTHENTICATE = 0x03,
 };
 
 // Defined in [MS-NLMP] Section 2.2.2.5
 // Only the used subset is defined.
 enum class NegotiateFlags : uint32_t {
   NONE = 0,
@@ skipping 19 matching lines @@
 
   return static_cast<NegotiateFlags>(static_cast<TFlagsInt>(lhs) &
                                      static_cast<TFlagsInt>(rhs));
 }
 
 static constexpr uint8_t SIGNATURE[] = "NTLMSSP";
 static constexpr size_t SIGNATURE_LEN = arraysize(SIGNATURE);
 static constexpr size_t SECURITY_BUFFER_LEN =
     (2 * sizeof(uint16_t)) + sizeof(uint32_t);
 static constexpr size_t NEGOTIATE_MESSAGE_LEN = 32;
+static constexpr size_t MIN_CHALLENGE_HEADER_LEN = 32;
 static constexpr size_t CHALLENGE_HEADER_LEN = 32;
 static constexpr size_t RESPONSE_V1_LEN = 24;
 static constexpr size_t CHALLENGE_LEN = 8;
 static constexpr size_t NTLM_HASH_LEN = 16;
+static constexpr size_t AUTHENTICATE_HEADER_V1_LEN = 64;
 
 static constexpr NegotiateFlags NEGOTIATE_MESSAGE_FLAGS =
     NegotiateFlags::UNICODE | NegotiateFlags::OEM |
     NegotiateFlags::REQUEST_TARGET | NegotiateFlags::NTLM |
     NegotiateFlags::ALWAYS_SIGN | NegotiateFlags::EXTENDED_SESSIONSECURITY;
 
 }  // namespace ntlm
 }  // namespace net
 
 #endif  // NET_BASE_NTLM_CONSTANTS_H_