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 {
   kNtlmV1 = 0x01,
   kNtlmV2 = 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 {
   kNegotiate = 0x01,
   kChallenge = 0x02,
   kAuthenticate = 0x03,
 };
 
 // Defined in [MS-NLMP] Section 2.2.2.5
 // Only the used subset is defined.
 enum class NegotiateFlags : uint32_t {
   kNone = 0,
@@ skipping 19 matching lines @@
 
   return static_cast<NegotiateFlags>(static_cast<TFlagsInt>(lhs) &
                                      static_cast<TFlagsInt>(rhs));
 }
 
 static constexpr uint8_t kSignature[] = "NTLMSSP";
 static constexpr size_t kSignatureLen = arraysize(kSignature);
 static constexpr size_t kSecurityBufferLen =
     (2 * sizeof(uint16_t)) + sizeof(uint32_t);
 static constexpr size_t kNegotiateMessageLen = 32;
+static constexpr size_t kMinChallengeHeaderLen = 32;
 static constexpr size_t kChallengeHeaderLen = 32;
 static constexpr size_t kResponseLenV1 = 24;
 static constexpr size_t kChallengeLen = 8;
 static constexpr size_t kNtlmHashLen = 16;
+static constexpr size_t kAuthenticateHeaderLenV1 = 64;
 
 static constexpr NegotiateFlags kNegotiateMessageFlags =
     NegotiateFlags::kUnicode | NegotiateFlags::kOem |
     NegotiateFlags::kRequestTarget | NegotiateFlags::kNtlm |
     NegotiateFlags::kAlwaysSign | NegotiateFlags::kExtendedSessionSecurity;
 
 }  // namespace ntlm
 }  // namespace net
 
 #endif  // NET_BASE_NTLM_CONSTANTS_H_