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PiperOrigin-RevId: 237361882
Change-Id: I109a68f44db867b20f8c6a7732b0ce657133e52a
diff --git a/quic/core/crypto/quic_decrypter.cc b/quic/core/crypto/quic_decrypter.cc
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+++ b/quic/core/crypto/quic_decrypter.cc
@@ -0,0 +1,68 @@
+// Copyright (c) 2012 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/quic_decrypter.h"
+
+#include "third_party/boringssl/src/include/openssl/tls1.h"
+#include "net/third_party/quiche/src/quic/core/crypto/aes_128_gcm_12_decrypter.h"
+#include "net/third_party/quiche/src/quic/core/crypto/aes_128_gcm_decrypter.h"
+#include "net/third_party/quiche/src/quic/core/crypto/aes_256_gcm_decrypter.h"
+#include "net/third_party/quiche/src/quic/core/crypto/chacha20_poly1305_decrypter.h"
+#include "net/third_party/quiche/src/quic/core/crypto/chacha20_poly1305_tls_decrypter.h"
+#include "net/third_party/quiche/src/quic/core/crypto/crypto_protocol.h"
+#include "net/third_party/quiche/src/quic/core/crypto/null_decrypter.h"
+#include "net/third_party/quiche/src/quic/core/crypto/quic_hkdf.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_bug_tracker.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_logging.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_ptr_util.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_string.h"
+
+namespace quic {
+
+// static
+std::unique_ptr<QuicDecrypter> QuicDecrypter::Create(QuicTag algorithm) {
+ switch (algorithm) {
+ case kAESG:
+ return QuicMakeUnique<Aes128Gcm12Decrypter>();
+ case kCC20:
+ return QuicMakeUnique<ChaCha20Poly1305Decrypter>();
+ default:
+ QUIC_LOG(FATAL) << "Unsupported algorithm: " << algorithm;
+ return nullptr;
+ }
+}
+
+// static
+std::unique_ptr<QuicDecrypter> QuicDecrypter::CreateFromCipherSuite(
+ uint32_t cipher_suite) {
+ switch (cipher_suite) {
+ case TLS1_CK_AES_128_GCM_SHA256:
+ return QuicMakeUnique<Aes128GcmDecrypter>();
+ case TLS1_CK_AES_256_GCM_SHA384:
+ return QuicMakeUnique<Aes256GcmDecrypter>();
+ case TLS1_CK_CHACHA20_POLY1305_SHA256:
+ return QuicMakeUnique<ChaCha20Poly1305TlsDecrypter>();
+ default:
+ QUIC_BUG << "TLS cipher suite is unknown to QUIC";
+ return nullptr;
+ }
+}
+
+// static
+void QuicDecrypter::DiversifyPreliminaryKey(QuicStringPiece preliminary_key,
+ QuicStringPiece nonce_prefix,
+ const DiversificationNonce& nonce,
+ size_t key_size,
+ size_t nonce_prefix_size,
+ QuicString* out_key,
+ QuicString* out_nonce_prefix) {
+ QuicHKDF hkdf((QuicString(preliminary_key)) + (QuicString(nonce_prefix)),
+ QuicStringPiece(nonce.data(), nonce.size()),
+ "QUIC key diversification", 0, key_size, 0, nonce_prefix_size,
+ 0);
+ *out_key = QuicString(hkdf.server_write_key());
+ *out_nonce_prefix = QuicString(hkdf.server_write_iv());
+}
+
+} // namespace quic
