html_viewer: Move webcrypto to a place where html_viewer can use it.

content/child/webcrypto/openssl/aes_cbc_openssl.cc

Index: content/child/webcrypto/openssl/aes_cbc_openssl.cc
diff --git a/content/child/webcrypto/openssl/aes_cbc_openssl.cc b/content/child/webcrypto/openssl/aes_cbc_openssl.cc
deleted file mode 100644
index 56459356ee431d854d8700e4a75cdd13760e5245..0000000000000000000000000000000000000000
--- a/content/child/webcrypto/openssl/aes_cbc_openssl.cc
+++ /dev/null
@@ -1,133 +0,0 @@
-// 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 <openssl/aes.h>
-#include <openssl/evp.h>
-
-#include "base/logging.h"
-#include "base/numerics/safe_math.h"
-#include "base/stl_util.h"
-#include "content/child/webcrypto/crypto_data.h"
-#include "content/child/webcrypto/openssl/aes_algorithm_openssl.h"
-#include "content/child/webcrypto/openssl/key_openssl.h"
-#include "content/child/webcrypto/openssl/util_openssl.h"
-#include "content/child/webcrypto/status.h"
-#include "content/child/webcrypto/webcrypto_util.h"
-#include "crypto/openssl_util.h"
-#include "crypto/scoped_openssl_types.h"
-#include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h"
-
-namespace content {
-
-namespace webcrypto {
-
-namespace {
-
-const EVP_CIPHER* GetAESCipherByKeyLength(unsigned int key_length_bytes) {
-  // BoringSSL does not support 192-bit AES keys.
-  switch (key_length_bytes) {
-    case 16:
-      return EVP_aes_128_cbc();
-    case 32:
-      return EVP_aes_256_cbc();
-    default:
-      return NULL;
-  }
-}
-
-Status AesCbcEncryptDecrypt(EncryptOrDecrypt cipher_operation,
-                            const blink::WebCryptoAlgorithm& algorithm,
-                            const blink::WebCryptoKey& key,
-                            const CryptoData& data,
-                            std::vector<uint8_t>* buffer) {
-  crypto::OpenSSLErrStackTracer err_tracer(FROM_HERE);
-
-  const blink::WebCryptoAesCbcParams* params = algorithm.aesCbcParams();
-  const std::vector<uint8_t>& raw_key =
-      SymKeyOpenSsl::Cast(key)->raw_key_data();
-
-  if (params->iv().size() != 16)
-    return Status::ErrorIncorrectSizeAesCbcIv();
-
-  // According to the openssl docs, the amount of data written may be as large
-  // as (data_size + cipher_block_size - 1), constrained to a multiple of
-  // cipher_block_size.
-  base::CheckedNumeric<int> output_max_len = data.byte_length();
-  output_max_len += AES_BLOCK_SIZE - 1;
-  if (!output_max_len.IsValid())
-    return Status::ErrorDataTooLarge();
-
-  const unsigned remainder = output_max_len.ValueOrDie() % AES_BLOCK_SIZE;
-  if (remainder != 0)
-    output_max_len += AES_BLOCK_SIZE - remainder;
-  if (!output_max_len.IsValid())
-    return Status::ErrorDataTooLarge();
-
-  // Note: PKCS padding is enabled by default
-  crypto::ScopedOpenSSL<EVP_CIPHER_CTX, EVP_CIPHER_CTX_free> context(
-      EVP_CIPHER_CTX_new());
-
-  if (!context.get())
-    return Status::OperationError();
-
-  const EVP_CIPHER* const cipher = GetAESCipherByKeyLength(raw_key.size());
-  DCHECK(cipher);
-
-  if (!EVP_CipherInit_ex(context.get(), cipher, NULL, &raw_key[0],
-                         params->iv().data(), cipher_operation)) {
-    return Status::OperationError();
-  }
-
-  buffer->resize(output_max_len.ValueOrDie());
-
-  unsigned char* const buffer_data = vector_as_array(buffer);
-
-  int output_len = 0;
-  if (!EVP_CipherUpdate(context.get(), buffer_data, &output_len, data.bytes(),
-                        data.byte_length())) {
-    return Status::OperationError();
-  }
-  int final_output_chunk_len = 0;
-  if (!EVP_CipherFinal_ex(context.get(), buffer_data + output_len,
-                          &final_output_chunk_len)) {
-    return Status::OperationError();
-  }
-
-  const unsigned int final_output_len =
-      static_cast<unsigned int>(output_len) +
-      static_cast<unsigned int>(final_output_chunk_len);
-
-  buffer->resize(final_output_len);
-
-  return Status::Success();
-}
-
-class AesCbcImplementation : public AesAlgorithm {
- public:
-  AesCbcImplementation() : AesAlgorithm("CBC") {}
-
-  Status Encrypt(const blink::WebCryptoAlgorithm& algorithm,
-                 const blink::WebCryptoKey& key,
-                 const CryptoData& data,
-                 std::vector<uint8_t>* buffer) const override {
-    return AesCbcEncryptDecrypt(ENCRYPT, algorithm, key, data, buffer);
-  }
-
-  Status Decrypt(const blink::WebCryptoAlgorithm& algorithm,
-                 const blink::WebCryptoKey& key,
-                 const CryptoData& data,
-                 std::vector<uint8_t>* buffer) const override {
-    return AesCbcEncryptDecrypt(DECRYPT, algorithm, key, data, buffer);
-  }
-};
-
-}  // namespace
-
-AlgorithmImplementation* CreatePlatformAesCbcImplementation() {
-  return new AesCbcImplementation;
-}
-
-}  // namespace webcrypto
-
-}  // namespace content