Project import generated by Copybara.
PiperOrigin-RevId: 237361882
Change-Id: I109a68f44db867b20f8c6a7732b0ce657133e52a
diff --git a/quic/core/crypto/chacha20_poly1305_decrypter.cc b/quic/core/crypto/chacha20_poly1305_decrypter.cc
new file mode 100644
index 0000000..83fd15e
--- /dev/null
+++ b/quic/core/crypto/chacha20_poly1305_decrypter.cc
@@ -0,0 +1,35 @@
+// 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/third_party/quiche/src/quic/core/crypto/chacha20_poly1305_decrypter.h"
+
+#include "third_party/boringssl/src/include/openssl/aead.h"
+#include "third_party/boringssl/src/include/openssl/tls1.h"
+
+namespace quic {
+
+namespace {
+
+const size_t kKeySize = 32;
+const size_t kNonceSize = 12;
+
+} // namespace
+
+ChaCha20Poly1305Decrypter::ChaCha20Poly1305Decrypter()
+ : AeadBaseDecrypter(EVP_aead_chacha20_poly1305,
+ kKeySize,
+ kAuthTagSize,
+ kNonceSize,
+ /* use_ietf_nonce_construction */ false) {
+ static_assert(kKeySize <= kMaxKeySize, "key size too big");
+ static_assert(kNonceSize <= kMaxNonceSize, "nonce size too big");
+}
+
+ChaCha20Poly1305Decrypter::~ChaCha20Poly1305Decrypter() {}
+
+uint32_t ChaCha20Poly1305Decrypter::cipher_id() const {
+ return TLS1_CK_CHACHA20_POLY1305_SHA256;
+}
+
+} // namespace quic
