Add a new QUIC platform API for text utilities.

net/quic/core/crypto/chacha20_poly1305_encrypter_test.cc

 // 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/core/crypto/chacha20_poly1305_encrypter.h"
 
 #include <memory>
 
 #include "net/quic/core/crypto/chacha20_poly1305_decrypter.h"
 #include "net/quic/core/quic_utils.h"
+#include "net/quic/platform/api/quic_text_utils.h"
 #include "net/quic/test_tools/quic_test_utils.h"
 
 using base::StringPiece;
 using std::string;
 
 namespace {
 
 // The test vectors come from RFC 7539 Section 2.8.2.
 
 // Each test vector consists of five strings of lowercase hexadecimal digits.
@@ skipping 59 matching lines @@
     return nullptr;
   }
 
   return new QuicData(ciphertext.release(), ciphertext_size, true);
 }
 
 TEST(ChaCha20Poly1305EncrypterTest, EncryptThenDecrypt) {
   ChaCha20Poly1305Encrypter encrypter;
   ChaCha20Poly1305Decrypter decrypter;
 
-  string key = QuicUtils::HexDecode(test_vectors[0].key);
+  string key = QuicTextUtils::HexDecode(test_vectors[0].key);
   ASSERT_TRUE(encrypter.SetKey(key));
   ASSERT_TRUE(decrypter.SetKey(key));
   ASSERT_TRUE(encrypter.SetNoncePrefix("abcd"));
   ASSERT_TRUE(decrypter.SetNoncePrefix("abcd"));
 
   QuicPathId path_id = 0x42;
   QuicPacketNumber packet_number = UINT64_C(0x123456789ABC);
   string associated_data = "associated_data";
   string plaintext = "plaintext";
   char encrypted[1024];
   size_t len;
   ASSERT_TRUE(encrypter.EncryptPacket(QuicVersionMax(), path_id, packet_number,
                                       associated_data, plaintext, encrypted,
                                       &len, arraysize(encrypted)));
   StringPiece ciphertext(encrypted, len);
   char decrypted[1024];
   ASSERT_TRUE(decrypter.DecryptPacket(QuicVersionMax(), path_id, packet_number,
                                       associated_data, ciphertext, decrypted,
                                       &len, arraysize(decrypted)));
 }
 
 TEST(ChaCha20Poly1305EncrypterTest, Encrypt) {
   for (size_t i = 0; test_vectors[i].key != nullptr; i++) {
     // Decode the test vector.
-    string key = QuicUtils::HexDecode(test_vectors[i].key);
-    string pt = QuicUtils::HexDecode(test_vectors[i].pt);
-    string iv = QuicUtils::HexDecode(test_vectors[i].iv);
-    string fixed = QuicUtils::HexDecode(test_vectors[i].fixed);
-    string aad = QuicUtils::HexDecode(test_vectors[i].aad);
-    string ct = QuicUtils::HexDecode(test_vectors[i].ct);
+    string key = QuicTextUtils::HexDecode(test_vectors[i].key);
+    string pt = QuicTextUtils::HexDecode(test_vectors[i].pt);
+    string iv = QuicTextUtils::HexDecode(test_vectors[i].iv);
+    string fixed = QuicTextUtils::HexDecode(test_vectors[i].fixed);
+    string aad = QuicTextUtils::HexDecode(test_vectors[i].aad);
+    string ct = QuicTextUtils::HexDecode(test_vectors[i].ct);
 
     ChaCha20Poly1305Encrypter encrypter;
     ASSERT_TRUE(encrypter.SetKey(key));
     std::unique_ptr<QuicData> encrypted(EncryptWithNonce(
         &encrypter, fixed + iv,
         // This deliberately tests that the encrypter can handle an AAD that
         // is set to nullptr, as opposed to a zero-length, non-nullptr pointer.
         StringPiece(aad.length() ? aad.data() : nullptr, aad.length()), pt));
     ASSERT_TRUE(encrypted.get());
     EXPECT_EQ(12u, ct.size() - pt.size());
@@ skipping 14 matching lines @@
 
 TEST(ChaCha20Poly1305EncrypterTest, GetCiphertextSize) {
   ChaCha20Poly1305Encrypter encrypter;
   EXPECT_EQ(1012u, encrypter.GetCiphertextSize(1000));
   EXPECT_EQ(112u, encrypter.GetCiphertextSize(100));
   EXPECT_EQ(22u, encrypter.GetCiphertextSize(10));
 }
 
 }  // namespace test
 }  // namespace net