1 files changed, 80 insertions, 0 deletions
diff --git a/chromium/net/quic/crypto/chacha20_poly1305_decrypter_nss.cc b/chromium/net/quic/crypto/chacha20_poly1305_decrypter_nss.cc
new file mode 100644
index 00000000000..e8100af49f6
--- /dev/null
+++ b/chromium/net/quic/crypto/chacha20_poly1305_decrypter_nss.cc
@@ -0,0 +1,80 @@
+// Copyright 2014 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/chacha20_poly1305_decrypter.h"
+
+#include <pk11pub.h>
+
+#include "base/logging.h"
+
+using base::StringPiece;
+
+namespace net {
+
+namespace {
+
+const size_t kKeySize = 32;
+const size_t kNoncePrefixSize = 0;
+
+}  // namespace
+
+#if defined(USE_NSS)
+
+// System NSS doesn't support ChaCha20+Poly1305 yet.
+
+ChaCha20Poly1305Decrypter::ChaCha20Poly1305Decrypter()
+    : AeadBaseDecrypter(CKM_INVALID_MECHANISM, NULL, kKeySize,
+                        kAuthTagSize, kNoncePrefixSize) {
+  NOTIMPLEMENTED();
+}
+
+ChaCha20Poly1305Decrypter::~ChaCha20Poly1305Decrypter() {}
+
+// static
+bool ChaCha20Poly1305Decrypter::IsSupported() {
+  return false;
+}
+
+void ChaCha20Poly1305Decrypter::FillAeadParams(StringPiece nonce,
+                                               StringPiece associated_data,
+                                               size_t auth_tag_size,
+                                               AeadParams* aead_params) const {
+  NOTIMPLEMENTED();
+}
+
+#else  // defined(USE_NSS)
+
+ChaCha20Poly1305Decrypter::ChaCha20Poly1305Decrypter()
+    : AeadBaseDecrypter(CKM_NSS_CHACHA20_POLY1305, PK11_Decrypt, kKeySize,
+                        kAuthTagSize, kNoncePrefixSize) {
+  COMPILE_ASSERT(kKeySize <= kMaxKeySize, key_size_too_big);
+  COMPILE_ASSERT(kNoncePrefixSize <= kMaxNoncePrefixSize,
+                 nonce_prefix_size_too_big);
+}
+
+ChaCha20Poly1305Decrypter::~ChaCha20Poly1305Decrypter() {}
+
+// static
+bool ChaCha20Poly1305Decrypter::IsSupported() {
+  return true;
+}
+
+void ChaCha20Poly1305Decrypter::FillAeadParams(StringPiece nonce,
+                                               StringPiece associated_data,
+                                               size_t auth_tag_size,
+                                               AeadParams* aead_params) const {
+  aead_params->len = sizeof(aead_params->data.nss_aead_params);
+  CK_NSS_AEAD_PARAMS* nss_aead_params = &aead_params->data.nss_aead_params;
+  nss_aead_params->pIv =
+      reinterpret_cast<CK_BYTE*>(const_cast<char*>(nonce.data()));
+  nss_aead_params->ulIvLen = nonce.size();
+  nss_aead_params->pAAD =
+      reinterpret_cast<CK_BYTE*>(const_cast<char*>(associated_data.data()));
+  nss_aead_params->ulAADLen = associated_data.size();
+  nss_aead_params->ulTagLen = auth_tag_size;
+}
+
+#endif  // defined(USE_NSS)
+
+}  // namespace net