Removing NSS files and USE_OPENSSL flag

net/quic/crypto/p256_key_exchange_nss.cc

Index: net/quic/crypto/p256_key_exchange_nss.cc
diff --git a/net/quic/crypto/p256_key_exchange_nss.cc b/net/quic/crypto/p256_key_exchange_nss.cc
deleted file mode 100644
index c5529ab582162973ac61d278512e5d710902f86f..0000000000000000000000000000000000000000
--- a/net/quic/crypto/p256_key_exchange_nss.cc
+++ /dev/null
@@ -1,224 +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.
-
-#include "net/quic/crypto/p256_key_exchange.h"
-
-#include "base/logging.h"
-#include "base/numerics/safe_conversions.h"
-#include "base/sys_byteorder.h"
-
-using base::StringPiece;
-using std::string;
-using std::vector;
-
-namespace net {
-
-namespace {
-
-// Password used by |NewPrivateKey| to encrypt exported EC private keys.
-// This is not used to provide any security, but to workaround NSS being
-// unwilling to export unencrypted EC keys. Note that SPDY and ChannelID
-// use the same approach.
-const char kExportPassword[] = "";
-
-// Convert StringPiece to vector of uint8_t.
-static vector<uint8_t> StringPieceToVector(StringPiece piece) {
-  return vector<uint8_t>(piece.data(), piece.data() + piece.length());
-}
-
-}  // namespace
-
-P256KeyExchange::P256KeyExchange(crypto::ECPrivateKey* key_pair,
-                                 const uint8_t* public_key)
-    : key_pair_(key_pair) {
-  memcpy(public_key_, public_key, sizeof(public_key_));
-}
-
-P256KeyExchange::~P256KeyExchange() {}
-
-// static
-P256KeyExchange* P256KeyExchange::New(StringPiece key) {
-  if (key.size() < 2) {
-    DVLOG(1) << "Key pair is too small.";
-    return nullptr;
-  }
-
-  const uint8_t* data = reinterpret_cast<const uint8_t*>(key.data());
-  size_t size =
-      static_cast<size_t>(data[0]) | (static_cast<size_t>(data[1]) << 8);
-  key.remove_prefix(2);
-  if (key.size() < size) {
-    DVLOG(1) << "Key pair does not contain key material.";
-    return nullptr;
-  }
-
-  StringPiece private_piece(key.data(), size);
-  key.remove_prefix(size);
-  if (key.empty()) {
-    DVLOG(1) << "Key pair does not contain public key.";
-    return nullptr;
-  }
-
-  StringPiece public_piece(key);
-
-  scoped_ptr<crypto::ECPrivateKey> key_pair(
-      crypto::ECPrivateKey::CreateFromEncryptedPrivateKeyInfo(
-          kExportPassword,
-          // TODO(thaidn): fix this interface to avoid copying secrets.
-          StringPieceToVector(private_piece),
-          StringPieceToVector(public_piece)));
-
-  if (!key_pair.get()) {
-    DVLOG(1) << "Can't decrypt private key.";
-    return nullptr;
-  }
-
-  // Perform some sanity checks on the public key.
-  SECKEYPublicKey* public_key = key_pair->public_key();
-  if (public_key->keyType != ecKey ||
-      public_key->u.ec.publicValue.len != kUncompressedP256PointBytes ||
-      !public_key->u.ec.publicValue.data ||
-      public_key->u.ec.publicValue.data[0] != kUncompressedECPointForm) {
-    DVLOG(1) << "Key is invalid.";
-    return nullptr;
-  }
-
-  // Ensure that the key is using the correct curve, i.e., NIST P-256.
-  const SECOidData* oid_data = SECOID_FindOIDByTag(SEC_OID_SECG_EC_SECP256R1);
-  if (!oid_data) {
-    DVLOG(1) << "Can't get P-256's OID.";
-    return nullptr;
-  }
-
-  if (public_key->u.ec.DEREncodedParams.len != oid_data->oid.len + 2 ||
-      !public_key->u.ec.DEREncodedParams.data ||
-      public_key->u.ec.DEREncodedParams.data[0] != SEC_ASN1_OBJECT_ID ||
-      public_key->u.ec.DEREncodedParams.data[1] != oid_data->oid.len ||
-      memcmp(public_key->u.ec.DEREncodedParams.data + 2, oid_data->oid.data,
-             oid_data->oid.len) != 0) {
-    DVLOG(1) << "Key is invalid.";
-  }
-
-  return new P256KeyExchange(key_pair.release(),
-                             public_key->u.ec.publicValue.data);
-}
-
-// static
-string P256KeyExchange::NewPrivateKey() {
-  scoped_ptr<crypto::ECPrivateKey> key_pair(crypto::ECPrivateKey::Create());
-
-  if (!key_pair.get()) {
-    DVLOG(1) << "Can't generate new key pair.";
-    return string();
-  }
-
-  vector<uint8_t> private_key;
-  if (!key_pair->ExportEncryptedPrivateKey(kExportPassword, 1 /* iteration */,
-                                           &private_key)) {
-    DVLOG(1) << "Can't export private key.";
-    return string();
-  }
-
-  // NSS lacks the ability to import an ECC private key without
-  // also importing the public key, so it is necessary to also
-  // store the public key.
-  vector<uint8_t> public_key;
-  if (!key_pair->ExportPublicKey(&public_key)) {
-    DVLOG(1) << "Can't export public key.";
-    return string();
-  }
-
-  // TODO(thaidn): determine how large encrypted private key can be
-  uint16_t private_key_size = base::checked_cast<uint16_t>(private_key.size());
-  const size_t result_size =
-      sizeof(private_key_size) + private_key_size + public_key.size();
-  vector<char> result(result_size);
-  char* resultp = &result[0];
-  // Export the key string.
-  // The first two bytes are the private key's size in little endian.
-  private_key_size = base::ByteSwapToLE16(private_key_size);
-  memcpy(resultp, &private_key_size, sizeof(private_key_size));
-  resultp += sizeof(private_key_size);
-  memcpy(resultp, &private_key[0], private_key.size());
-  resultp += private_key.size();
-  memcpy(resultp, &public_key[0], public_key.size());
-
-  return string(&result[0], result_size);
-}
-
-KeyExchange* P256KeyExchange::NewKeyPair(QuicRandom* /*rand*/) const {
-  // TODO(agl): avoid the serialisation/deserialisation in this function.
-  const string private_value = NewPrivateKey();
-  return P256KeyExchange::New(private_value);
-}
-
-bool P256KeyExchange::CalculateSharedKey(StringPiece peer_public_value,
-                                         string* out_result) const {
-  if (peer_public_value.size() != kUncompressedP256PointBytes ||
-      peer_public_value[0] != kUncompressedECPointForm) {
-    DVLOG(1) << "Peer public value is invalid.";
-    return false;
-  }
-
-  DCHECK(key_pair_.get());
-  DCHECK(key_pair_->public_key());
-
-  SECKEYPublicKey peer_public_key;
-  memset(&peer_public_key, 0, sizeof(peer_public_key));
-
-  peer_public_key.keyType = ecKey;
-  // Both sides of a ECDH key exchange need to use the same EC params.
-  peer_public_key.u.ec.DEREncodedParams.len =
-      key_pair_->public_key()->u.ec.DEREncodedParams.len;
-  peer_public_key.u.ec.DEREncodedParams.data =
-      key_pair_->public_key()->u.ec.DEREncodedParams.data;
-
-  peer_public_key.u.ec.publicValue.type = siBuffer;
-  peer_public_key.u.ec.publicValue.data =
-      reinterpret_cast<uint8_t*>(const_cast<char*>(peer_public_value.data()));
-  peer_public_key.u.ec.publicValue.len = peer_public_value.size();
-
-  // The NSS function performing ECDH key exchange is PK11_PubDeriveWithKDF.
-  // As this function is used for SSL/TLS's ECDH key exchanges it has many
-  // arguments, most of which are not required in QUIC.
-  // Key derivation function CKD_NULL is used because the return value of
-  // |CalculateSharedKey| is the actual ECDH shared key, not any derived keys
-  // from it.
-  crypto::ScopedPK11SymKey premaster_secret(
-      PK11_PubDeriveWithKDF(key_pair_->key(), &peer_public_key, PR_FALSE,
-                            nullptr, nullptr, CKM_ECDH1_DERIVE, /* mechanism */
-                            CKM_GENERIC_SECRET_KEY_GEN,         /* target */
-                            CKA_DERIVE, 0, CKD_NULL,            /* kdf */
-                            nullptr, nullptr));
-
-  if (!premaster_secret.get()) {
-    DVLOG(1) << "Can't derive ECDH shared key.";
-    return false;
-  }
-
-  if (PK11_ExtractKeyValue(premaster_secret.get()) != SECSuccess) {
-    DVLOG(1) << "Can't extract raw ECDH shared key.";
-    return false;
-  }
-
-  SECItem* key_data = PK11_GetKeyData(premaster_secret.get());
-  if (!key_data || !key_data->data || key_data->len != kP256FieldBytes) {
-    DVLOG(1) << "ECDH shared key is invalid.";
-    return false;
-  }
-
-  out_result->assign(reinterpret_cast<char*>(key_data->data), key_data->len);
-  return true;
-}
-
-StringPiece P256KeyExchange::public_value() const {
-  return StringPiece(reinterpret_cast<const char*>(public_key_),
-                     sizeof(public_key_));
-}
-
-QuicTag P256KeyExchange::tag() const {
-  return kP256;
-}
-
-}  // namespace net