net/quic/crypto/chacha20_poly1305_encrypter_openssl.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "net/quic/crypto/chacha20_poly1305_encrypter.h"
   6
   7 #include <openssl/evp.h>
   8
   9 namespace net {
  10
  11 namespace {
  12
  13 const size_t kKeySize = 32;
  14 const size_t kNoncePrefixSize = 0;
  15
  16 }  // namespace
  17
  18 ChaCha20Poly1305Encrypter::ChaCha20Poly1305Encrypter()
  19     : AeadBaseEncrypter(EVP_aead_chacha20_poly1305(), kKeySize, kAuthTagSize,
  20                         kNoncePrefixSize) {
  21   COMPILE_ASSERT(kKeySize <= kMaxKeySize, key_size_too_big);
  22   COMPILE_ASSERT(kNoncePrefixSize <= kMaxNoncePrefixSize,
  23                  nonce_prefix_size_too_big);
  24 }
  25
  26 ChaCha20Poly1305Encrypter::~ChaCha20Poly1305Encrypter() {}
  27
  28 // static
  29 bool ChaCha20Poly1305Encrypter::IsSupported() { return true; }
  30
  31 }  // namespace net