Remove //net (except for Android test stuff) and sdch

net/quic/crypto/aes_128_gcm_12_decrypter_nss.cc

Index: net/quic/crypto/aes_128_gcm_12_decrypter_nss.cc
diff --git a/net/quic/crypto/aes_128_gcm_12_decrypter_nss.cc b/net/quic/crypto/aes_128_gcm_12_decrypter_nss.cc
deleted file mode 100644
index 2378d3a8aee54adc4bab3d5feda725a0173297ba..0000000000000000000000000000000000000000
--- a/net/quic/crypto/aes_128_gcm_12_decrypter_nss.cc
+++ /dev/null
@@ -1,236 +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/aes_128_gcm_12_decrypter.h"
-
-#include <pk11pub.h>
-#include <secerr.h>
-
-#include "base/lazy_instance.h"
-#include "crypto/ghash.h"
-#include "crypto/scoped_nss_types.h"
-
-#if defined(USE_NSS)
-#include <dlfcn.h>
-#endif
-
-using base::StringPiece;
-
-namespace net {
-
-namespace {
-
-const size_t kKeySize = 16;
-const size_t kNoncePrefixSize = 4;
-
-// On Linux, dynamically link against the system version of libnss3.so. In
-// order to continue working on systems without up-to-date versions of NSS,
-// lookup PK11_Decrypt with dlsym.
-
-// GcmSupportChecker is a singleton which caches the results of runtime symbol
-// resolution of PK11_Decrypt.
-class GcmSupportChecker {
- public:
-  static PK11_DecryptFunction pk11_decrypt_func() {
-    return pk11_decrypt_func_;
-  }
-
- private:
-  friend struct base::DefaultLazyInstanceTraits<GcmSupportChecker>;
-
-  GcmSupportChecker() {
-#if !defined(USE_NSS)
-    // Using a bundled version of NSS that is guaranteed to have this symbol.
-    pk11_decrypt_func_ = PK11_Decrypt;
-#else
-    // Using system NSS libraries and PCKS #11 modules, which may not have the
-    // necessary function (PK11_Decrypt) or mechanism support (CKM_AES_GCM).
-
-    // If PK11_Decrypt() was successfully resolved, then NSS will support
-    // AES-GCM directly. This was introduced in NSS 3.15.
-    pk11_decrypt_func_ = (PK11_DecryptFunction)dlsym(RTLD_DEFAULT,
-                                                     "PK11_Decrypt");
-#endif
-  }
-
-  // |pk11_decrypt_func_| stores the runtime symbol resolution of PK11_Decrypt.
-  static PK11_DecryptFunction pk11_decrypt_func_;
-};
-
-// static
-PK11_DecryptFunction GcmSupportChecker::pk11_decrypt_func_ = nullptr;
-
-base::LazyInstance<GcmSupportChecker>::Leaky g_gcm_support_checker =
-    LAZY_INSTANCE_INITIALIZER;
-
-// Calls PK11_Decrypt if it's available.  Otherwise, emulates CKM_AES_GCM using
-// CKM_AES_CTR and the GaloisHash class.
-SECStatus My_Decrypt(PK11SymKey* key,
-                     CK_MECHANISM_TYPE mechanism,
-                     SECItem* param,
-                     unsigned char* out,
-                     unsigned int* out_len,
-                     unsigned int max_len,
-                     const unsigned char* enc,
-                     unsigned int enc_len) {
-  // If PK11_Decrypt() was successfully resolved or if bundled version of NSS is
-  // being used, then NSS will support AES-GCM directly.
-  PK11_DecryptFunction pk11_decrypt_func =
-      GcmSupportChecker::pk11_decrypt_func();
-  if (pk11_decrypt_func != nullptr) {
-    return pk11_decrypt_func(key, mechanism, param, out, out_len, max_len, enc,
-                             enc_len);
-  }
-
-  // Otherwise, the user has an older version of NSS. Regrettably, NSS 3.14.x
-  // has a bug in the AES GCM code
-  // (https://bugzilla.mozilla.org/show_bug.cgi?id=853285), as well as missing
-  // the PK11_Decrypt function
-  // (https://bugzilla.mozilla.org/show_bug.cgi?id=854063), both of which are
-  // resolved in NSS 3.15.
-
-  DCHECK_EQ(mechanism, static_cast<CK_MECHANISM_TYPE>(CKM_AES_GCM));
-  DCHECK_EQ(param->len, sizeof(CK_GCM_PARAMS));
-
-  const CK_GCM_PARAMS* gcm_params =
-      reinterpret_cast<CK_GCM_PARAMS*>(param->data);
-
-  DCHECK_EQ(gcm_params->ulTagBits,
-            static_cast<CK_ULONG>(Aes128Gcm12Decrypter::kAuthTagSize * 8));
-  if (gcm_params->ulIvLen != 12u) {
-    DVLOG(1) << "ulIvLen is not equal to 12";
-    PORT_SetError(SEC_ERROR_INPUT_LEN);
-    return SECFailure;
-  }
-
-  SECItem my_param = { siBuffer, nullptr, 0 };
-
-  // Step 2. Let H = CIPH_K(128 '0' bits).
-  unsigned char ghash_key[16] = {0};
-  crypto::ScopedPK11Context ctx(PK11_CreateContextBySymKey(
-      CKM_AES_ECB, CKA_ENCRYPT, key, &my_param));
-  if (!ctx) {
-    DVLOG(1) << "PK11_CreateContextBySymKey failed";
-    return SECFailure;
-  }
-  int output_len;
-  if (PK11_CipherOp(ctx.get(), ghash_key, &output_len, sizeof(ghash_key),
-                    ghash_key, sizeof(ghash_key)) != SECSuccess) {
-    DVLOG(1) << "PK11_CipherOp failed";
-    return SECFailure;
-  }
-
-  PK11_Finalize(ctx.get());
-
-  if (output_len != sizeof(ghash_key)) {
-    DVLOG(1) << "Wrong output length";
-    PORT_SetError(SEC_ERROR_LIBRARY_FAILURE);
-    return SECFailure;
-  }
-
-  // Step 3. If len(IV)=96, then let J0 = IV || 31 '0' bits || 1.
-  CK_AES_CTR_PARAMS ctr_params = {0};
-  ctr_params.ulCounterBits = 32;
-  memcpy(ctr_params.cb, gcm_params->pIv, gcm_params->ulIvLen);
-  ctr_params.cb[12] = 0;
-  ctr_params.cb[13] = 0;
-  ctr_params.cb[14] = 0;
-  ctr_params.cb[15] = 1;
-
-  my_param.type = siBuffer;
-  my_param.data = reinterpret_cast<unsigned char*>(&ctr_params);
-  my_param.len = sizeof(ctr_params);
-
-  ctx.reset(PK11_CreateContextBySymKey(CKM_AES_CTR, CKA_ENCRYPT, key,
-                                       &my_param));
-  if (!ctx) {
-    DVLOG(1) << "PK11_CreateContextBySymKey failed";
-    return SECFailure;
-  }
-
-  // Step 6. Calculate the encryption mask of GCTR_K(J0, ...).
-  unsigned char tag_mask[16] = {0};
-  if (PK11_CipherOp(ctx.get(), tag_mask, &output_len, sizeof(tag_mask),
-                    tag_mask, sizeof(tag_mask)) != SECSuccess) {
-    DVLOG(1) << "PK11_CipherOp failed";
-    return SECFailure;
-  }
-  if (output_len != sizeof(tag_mask)) {
-    DVLOG(1) << "Wrong output length";
-    PORT_SetError(SEC_ERROR_LIBRARY_FAILURE);
-    return SECFailure;
-  }
-
-  if (enc_len < Aes128Gcm12Decrypter::kAuthTagSize) {
-    PORT_SetError(SEC_ERROR_INPUT_LEN);
-    return SECFailure;
-  }
-
-  // The const_cast for |enc| can be removed if system NSS libraries are
-  // NSS 3.14.1 or later (NSS bug
-  // https://bugzilla.mozilla.org/show_bug.cgi?id=808218).
-  if (PK11_CipherOp(ctx.get(), out, &output_len, max_len,
-          const_cast<unsigned char*>(enc),
-          enc_len - Aes128Gcm12Decrypter::kAuthTagSize) != SECSuccess) {
-    DVLOG(1) << "PK11_CipherOp failed";
-    return SECFailure;
-  }
-
-  PK11_Finalize(ctx.get());
-
-  if (static_cast<unsigned int>(output_len) !=
-      enc_len - Aes128Gcm12Decrypter::kAuthTagSize) {
-    DVLOG(1) << "Wrong output length";
-    PORT_SetError(SEC_ERROR_LIBRARY_FAILURE);
-    return SECFailure;
-  }
-
-  crypto::GaloisHash ghash(ghash_key);
-  ghash.UpdateAdditional(gcm_params->pAAD, gcm_params->ulAADLen);
-  ghash.UpdateCiphertext(enc, output_len);
-  unsigned char auth_tag[Aes128Gcm12Decrypter::kAuthTagSize];
-  ghash.Finish(auth_tag, Aes128Gcm12Decrypter::kAuthTagSize);
-  for (unsigned int i = 0; i < Aes128Gcm12Decrypter::kAuthTagSize; i++) {
-    auth_tag[i] ^= tag_mask[i];
-  }
-
-  if (NSS_SecureMemcmp(auth_tag, enc + output_len,
-                       Aes128Gcm12Decrypter::kAuthTagSize) != 0) {
-    PORT_SetError(SEC_ERROR_BAD_DATA);
-    return SECFailure;
-  }
-
-  *out_len = output_len;
-  return SECSuccess;
-}
-
-}  // namespace
-
-Aes128Gcm12Decrypter::Aes128Gcm12Decrypter()
-    : AeadBaseDecrypter(CKM_AES_GCM, My_Decrypt, kKeySize, kAuthTagSize,
-                        kNoncePrefixSize) {
-  static_assert(kKeySize <= kMaxKeySize, "key size too big");
-  static_assert(kNoncePrefixSize <= kMaxNoncePrefixSize,
-                "nonce prefix size too big");
-  ignore_result(g_gcm_support_checker.Get());
-}
-
-Aes128Gcm12Decrypter::~Aes128Gcm12Decrypter() {}
-
-void Aes128Gcm12Decrypter::FillAeadParams(StringPiece nonce,
-                                          const StringPiece& associated_data,
-                                          size_t auth_tag_size,
-                                          AeadParams* aead_params) const {
-  aead_params->len = sizeof(aead_params->data.gcm_params);
-  CK_GCM_PARAMS* gcm_params = &aead_params->data.gcm_params;
-  gcm_params->pIv =
-      reinterpret_cast<CK_BYTE*>(const_cast<char*>(nonce.data()));
-  gcm_params->ulIvLen = nonce.size();
-  gcm_params->pAAD =
-      reinterpret_cast<CK_BYTE*>(const_cast<char*>(associated_data.data()));
-  gcm_params->ulAADLen = associated_data.size();
-  gcm_params->ulTagBits = auth_tag_size * 8;
-}
-
-}  // namespace net