Removing NSS files and USE_OPENSSL flag

net/quic/crypto/aead_base_decrypter_nss.cc

-// 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.
-
-#include <pk11pub.h>
-
-#include <memory>
-
-#include "crypto/scoped_nss_types.h"
-#include "net/quic/crypto/aead_base_decrypter.h"
-#include "net/quic/quic_flags.h"
-#include "net/quic/quic_utils.h"
-
-using base::StringPiece;
-
-namespace net {
-
-AeadBaseDecrypter::AeadBaseDecrypter(CK_MECHANISM_TYPE aead_mechanism,
-                                     size_t key_size,
-                                     size_t auth_tag_size,
-                                     size_t nonce_prefix_size)
-    : aead_mechanism_(aead_mechanism),
-      key_size_(key_size),
-      auth_tag_size_(auth_tag_size),
-      nonce_prefix_size_(nonce_prefix_size) {
-  DCHECK_LE(key_size_, sizeof(key_));
-  DCHECK_LE(nonce_prefix_size_, sizeof(nonce_prefix_));
-}
-
-AeadBaseDecrypter::~AeadBaseDecrypter() {}
-
-bool AeadBaseDecrypter::SetKey(StringPiece key) {
-  DCHECK_EQ(key.size(), key_size_);
-  if (key.size() != key_size_) {
-    return false;
-  }
-  memcpy(key_, key.data(), key.size());
-  return true;
-}
-
-bool AeadBaseDecrypter::SetNoncePrefix(StringPiece nonce_prefix) {
-  DCHECK_EQ(nonce_prefix.size(), nonce_prefix_size_);
-  if (nonce_prefix.size() != nonce_prefix_size_) {
-    return false;
-  }
-  memcpy(nonce_prefix_, nonce_prefix.data(), nonce_prefix.size());
-  return true;
-}
-
-bool AeadBaseDecrypter::DecryptPacket(QuicPathId path_id,
-                                      QuicPacketNumber packet_number,
-                                      StringPiece associated_data,
-                                      StringPiece ciphertext,
-                                      char* output,
-                                      size_t* output_length,
-                                      size_t max_output_length) {
-  if (ciphertext.length() < auth_tag_size_) {
-    return false;
-  }
-
-  uint8_t nonce[sizeof(nonce_prefix_) + sizeof(packet_number)];
-  const size_t nonce_size = nonce_prefix_size_ + sizeof(packet_number);
-  DCHECK_LE(nonce_size, sizeof(nonce));
-  memcpy(nonce, nonce_prefix_, nonce_prefix_size_);
-  uint64_t path_id_packet_number =
-      QuicUtils::PackPathIdAndPacketNumber(path_id, packet_number);
-  memcpy(nonce + nonce_prefix_size_, &path_id_packet_number,
-         sizeof(path_id_packet_number));
-
-  // NSS 3.14.x incorrectly requires an output buffer at least as long as
-  // the ciphertext (NSS bug
-  // https://bugzilla.mozilla.org/show_bug.cgi?id= 853674). Fortunately
-  // QuicDecrypter::Decrypt() specifies that |output| must be as long as
-  // |ciphertext| on entry.
-  size_t plaintext_size = ciphertext.length() - auth_tag_size_;
-
-  // Import key_ into NSS.
-  SECItem key_item;
-  key_item.type = siBuffer;
-  key_item.data = key_;
-  key_item.len = key_size_;
-  PK11SlotInfo* slot = PK11_GetInternalSlot();
-
-  // The exact value of the |origin| argument doesn't matter to NSS as long as
-  // it's not PK11_OriginFortezzaHack, so pass PK11_OriginUnwrap as a
-  // placeholder.
-  crypto::ScopedPK11SymKey aead_key(
-      PK11_ImportSymKey(slot, aead_mechanism_, PK11_OriginUnwrap, CKA_DECRYPT,
-                        &key_item, nullptr));
-  PK11_FreeSlot(slot);
-  slot = nullptr;
-  if (!aead_key) {
-    DVLOG(1) << "PK11_ImportSymKey failed";
-    return false;
-  }
-
-  AeadParams aead_params = {0};
-  FillAeadParams(StringPiece(reinterpret_cast<char*>(nonce), nonce_size),
-                 associated_data, auth_tag_size_, &aead_params);
-
-  SECItem param;
-  param.type = siBuffer;
-  param.data = reinterpret_cast<unsigned char*>(&aead_params.data);
-  param.len = aead_params.len;
-
-  unsigned int output_len;
-  if (PK11_Decrypt(aead_key.get(), aead_mechanism_, &param,
-                   reinterpret_cast<uint8_t*>(output), &output_len,
-                   max_output_length,
-                   reinterpret_cast<const unsigned char*>(ciphertext.data()),
-                   ciphertext.length()) != SECSuccess) {
-    return false;
-  }
-
-  if (output_len != plaintext_size) {
-    DVLOG(1) << "Wrong output length";
-    return false;
-  }
-  *output_length = output_len;
-  return true;
-}
-
-StringPiece AeadBaseDecrypter::GetKey() const {
-  return StringPiece(reinterpret_cast<const char*>(key_), key_size_);
-}
-
-StringPiece AeadBaseDecrypter::GetNoncePrefix() const {
-  if (nonce_prefix_size_ == 0) {
-    return StringPiece();
-  }
-  return StringPiece(reinterpret_cast<const char*>(nonce_prefix_),
-                     nonce_prefix_size_);
-}
-
-}  // namespace net