Move shared files in net/quic/ into net/quic/core/

net/quic/crypto/crypto_utils.h

Index: net/quic/crypto/crypto_utils.h
diff --git a/net/quic/crypto/crypto_utils.h b/net/quic/crypto/crypto_utils.h
deleted file mode 100644
index ddbff57ea5739661d3b66ed7b3831060240467f6..0000000000000000000000000000000000000000
--- a/net/quic/crypto/crypto_utils.h
+++ /dev/null
@@ -1,170 +0,0 @@
-// Copyright (c) 2013 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.
-//
-// Some helpers for quic crypto
-
-#ifndef NET_QUIC_CRYPTO_CRYPTO_UTILS_H_
-#define NET_QUIC_CRYPTO_CRYPTO_UTILS_H_
-
-#include <stddef.h>
-#include <stdint.h>
-
-#include <string>
-
-#include "base/macros.h"
-#include "base/strings/string_piece.h"
-#include "net/base/net_export.h"
-#include "net/quic/crypto/crypto_handshake.h"
-#include "net/quic/crypto/crypto_handshake_message.h"
-#include "net/quic/crypto/crypto_protocol.h"
-#include "net/quic/quic_protocol.h"
-#include "net/quic/quic_time.h"
-
-namespace net {
-
-class QuicTime;
-class QuicRandom;
-struct QuicCryptoNegotiatedParameters;
-
-class NET_EXPORT_PRIVATE CryptoUtils {
- public:
-  // Diversification is a utility class that's used to act like a union type.
-  // Values can be created by calling the functions like |NoDiversification|,
-  // below.
-  class Diversification {
-   public:
-    enum Mode {
-      NEVER,  // Key diversification will never be used. Forward secure
-              // crypters will always use this mode.
-
-      PENDING,  // Key diversification will happen when a nonce is later
-                // received. This should only be used by clients initial
-                // decrypters which are waiting on the divesification nonce
-                // from the server.
-
-      NOW,  // Key diversification will happen immediate based on the nonce.
-            // This should only be used by servers initial encrypters.
-    };
-
-    Diversification(const Diversification& diversification) = default;
-
-    static Diversification Never() { return Diversification(NEVER, nullptr); }
-    static Diversification Pending() {
-      return Diversification(PENDING, nullptr);
-    }
-    static Diversification Now(DiversificationNonce* nonce) {
-      return Diversification(NOW, nonce);
-    }
-
-    Mode mode() const { return mode_; }
-    DiversificationNonce* nonce() const {
-      DCHECK_EQ(mode_, NOW);
-      return nonce_;
-    }
-
-   private:
-    Diversification(Mode mode, DiversificationNonce* nonce)
-        : mode_(mode), nonce_(nonce) {}
-
-    Mode mode_;
-    DiversificationNonce* nonce_;
-  };
-
-  // Generates the connection nonce. The nonce is formed as:
-  //   <4 bytes> current time
-  //   <8 bytes> |orbit| (or random if |orbit| is empty)
-  //   <20 bytes> random
-  static void GenerateNonce(QuicWallTime now,
-                            QuicRandom* random_generator,
-                            base::StringPiece orbit,
-                            std::string* nonce);
-
-  // Returns true if the sni is valid, false otherwise.
-  //  (1) disallow IP addresses;
-  //  (2) check that the hostname contains valid characters only; and
-  //  (3) contains at least one dot.
-  static bool IsValidSNI(base::StringPiece sni);
-
-  // Convert hostname to lowercase and remove the trailing '.'.
-  // Returns |hostname|. NormalizeHostname() doesn't support IP address
-  // literals. IsValidSNI() should be called before calling NormalizeHostname().
-  static std::string NormalizeHostname(const char* hostname);
-
-  // DeriveKeys populates |crypters->encrypter|, |crypters->decrypter|, and
-  // |subkey_secret| (optional -- may be null) given the contents of
-  // |premaster_secret|, |client_nonce|, |server_nonce| and |hkdf_input|. |aead|
-  // determines which cipher will be used. |perspective| controls whether the
-  // server's keys are assigned to |encrypter| or |decrypter|. |server_nonce| is
-  // optional and, if non-empty, is mixed into the key derivation.
-  // |subkey_secret| will have the same length as |premaster_secret|.
-  //
-  // If the mode of |diversification| is NEVER, the the crypters will be
-  // configured to never perform key diversification. If the mode is
-  // NOW (which is only for servers, then the encrypter will be keyed via a
-  // two-step process that uses the nonce from |diversification|.
-  // If the mode is PENDING (which is only for servres), then the
-  // decrypter will only be keyed to a preliminary state: a call to
-  // |SetDiversificationNonce| with a diversification nonce will be needed to
-  // complete keying.
-  static bool DeriveKeys(base::StringPiece premaster_secret,
-                         QuicTag aead,
-                         base::StringPiece client_nonce,
-                         base::StringPiece server_nonce,
-                         const std::string& hkdf_input,
-                         Perspective perspective,
-                         Diversification diversification,
-                         CrypterPair* crypters,
-                         std::string* subkey_secret);
-
-  // Performs key extraction to derive a new secret of |result_len| bytes
-  // dependent on |subkey_secret|, |label|, and |context|. Returns false if the
-  // parameters are invalid (e.g. |label| contains null bytes); returns true on
-  // success.
-  static bool ExportKeyingMaterial(base::StringPiece subkey_secret,
-                                   base::StringPiece label,
-                                   base::StringPiece context,
-                                   size_t result_len,
-                                   std::string* result);
-
-  // Computes the FNV-1a hash of the provided DER-encoded cert for use in the
-  // XLCT tag.
-  static uint64_t ComputeLeafCertHash(const std::string& cert);
-
-  // Validates that |server_hello| is actually an SHLO message and that it is
-  // not part of a downgrade attack.
-  //
-  // Returns QUIC_NO_ERROR if this is the case or returns the appropriate error
-  // code and sets |error_details|.
-  static QuicErrorCode ValidateServerHello(
-      const CryptoHandshakeMessage& server_hello,
-      const QuicVersionVector& negotiated_versions,
-      std::string* error_details);
-
-  // Validates that |client_hello| is actually a CHLO and that this is not part
-  // of a downgrade attack.
-  // This includes verifiying versions and detecting downgrade attacks.
-  //
-  // Returns QUIC_NO_ERROR if this is the case or returns the appropriate error
-  // code and sets |error_details|.
-  static QuicErrorCode ValidateClientHello(
-      const CryptoHandshakeMessage& client_hello,
-      QuicVersion version,
-      const QuicVersionVector& supported_versions,
-      std::string* error_details);
-
-  // Returns the name of the HandshakeFailureReason as a char*
-  static const char* HandshakeFailureReasonToString(
-      HandshakeFailureReason reason);
-
-  // Writes a hash of the serialized |message| into |output|.
-  static void HashHandshakeMessage(const CryptoHandshakeMessage& message,
-                                   std::string* output);
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(CryptoUtils);
-};
-
-}  // namespace net
-
-#endif  // NET_QUIC_CRYPTO_CRYPTO_UTILS_H_