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

content/child/webcrypto/openssl/hmac_openssl.cc

Index: content/child/webcrypto/openssl/hmac_openssl.cc
diff --git a/content/child/webcrypto/openssl/hmac_openssl.cc b/content/child/webcrypto/openssl/hmac_openssl.cc
deleted file mode 100644
index 69b55bf0464979200a41f8bdb37be6aae8950e0a..0000000000000000000000000000000000000000
--- a/content/child/webcrypto/openssl/hmac_openssl.cc
+++ /dev/null
@@ -1,229 +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/hmac.h>
-
-#include "base/logging.h"
-#include "base/stl_util.h"
-#include "content/child/webcrypto/algorithm_implementation.h"
-#include "content/child/webcrypto/crypto_data.h"
-#include "content/child/webcrypto/jwk.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/secure_util.h"
-#include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h"
-#include "third_party/WebKit/public/platform/WebCryptoKeyAlgorithm.h"
-
-namespace content {
-
-namespace webcrypto {
-
-namespace {
-
-const blink::WebCryptoKeyUsageMask kAllKeyUsages =
-    blink::WebCryptoKeyUsageSign | blink::WebCryptoKeyUsageVerify;
-
-Status SignHmac(const std::vector<uint8_t>& raw_key,
-                const blink::WebCryptoAlgorithm& hash,
-                const CryptoData& data,
-                std::vector<uint8_t>* buffer) {
-  crypto::OpenSSLErrStackTracer err_tracer(FROM_HERE);
-
-  const EVP_MD* digest_algorithm = GetDigest(hash.id());
-  if (!digest_algorithm)
-    return Status::ErrorUnsupported();
-  unsigned int hmac_expected_length = EVP_MD_size(digest_algorithm);
-
-  buffer->resize(hmac_expected_length);
-  crypto::ScopedOpenSSLSafeSizeBuffer<EVP_MAX_MD_SIZE> hmac_result(
-      vector_as_array(buffer), hmac_expected_length);
-
-  unsigned int hmac_actual_length;
-  unsigned char* const success = HMAC(
-      digest_algorithm, vector_as_array(&raw_key), raw_key.size(), data.bytes(),
-      data.byte_length(), hmac_result.safe_buffer(), &hmac_actual_length);
-  if (!success || hmac_actual_length != hmac_expected_length)
-    return Status::OperationError();
-
-  return Status::Success();
-}
-
-class HmacImplementation : public AlgorithmImplementation {
- public:
-  HmacImplementation() {}
-
-  Status GenerateKey(const blink::WebCryptoAlgorithm& algorithm,
-                     bool extractable,
-                     blink::WebCryptoKeyUsageMask usages,
-                     GenerateKeyResult* result) const override {
-    Status status = CheckKeyCreationUsages(kAllKeyUsages, usages, false);
-    if (status.IsError())
-      return status;
-
-    const blink::WebCryptoHmacKeyGenParams* params =
-        algorithm.hmacKeyGenParams();
-
-    unsigned int keylen_bits = 0;
-    status = GetHmacKeyGenLengthInBits(params, &keylen_bits);
-    if (status.IsError())
-      return status;
-
-    return GenerateWebCryptoSecretKey(blink::WebCryptoKeyAlgorithm::createHmac(
-                                          params->hash().id(), keylen_bits),
-                                      extractable, usages, keylen_bits, result);
-  }
-
-  Status VerifyKeyUsagesBeforeImportKey(
-      blink::WebCryptoKeyFormat format,
-      blink::WebCryptoKeyUsageMask usages) const override {
-    switch (format) {
-      case blink::WebCryptoKeyFormatRaw:
-      case blink::WebCryptoKeyFormatJwk:
-        return CheckKeyCreationUsages(kAllKeyUsages, usages, false);
-      default:
-        return Status::ErrorUnsupportedImportKeyFormat();
-    }
-  }
-
-  Status ImportKeyRaw(const CryptoData& key_data,
-                      const blink::WebCryptoAlgorithm& algorithm,
-                      bool extractable,
-                      blink::WebCryptoKeyUsageMask usages,
-                      blink::WebCryptoKey* key) const override {
-    const blink::WebCryptoHmacImportParams* params =
-        algorithm.hmacImportParams();
-
-    unsigned int keylen_bits = 0;
-    Status status = GetHmacImportKeyLengthBits(params, key_data.byte_length(),
-                                               &keylen_bits);
-    if (status.IsError())
-      return status;
-
-    const blink::WebCryptoKeyAlgorithm key_algorithm =
-        blink::WebCryptoKeyAlgorithm::createHmac(params->hash().id(),
-                                                 keylen_bits);
-
-    // If no bit truncation was requested, then done!
-    if ((keylen_bits % 8) == 0) {
-      return CreateWebCryptoSecretKey(key_data, key_algorithm, extractable,
-                                      usages, key);
-    }
-
-    // Otherwise zero out the unused bits in the key data before importing.
-    std::vector<uint8_t> modified_key_data(
-        key_data.bytes(), key_data.bytes() + key_data.byte_length());
-    TruncateToBitLength(keylen_bits, &modified_key_data);
-    return CreateWebCryptoSecretKey(CryptoData(modified_key_data),
-                                    key_algorithm, extractable, usages, key);
-  }
-
-  Status ImportKeyJwk(const CryptoData& key_data,
-                      const blink::WebCryptoAlgorithm& algorithm,
-                      bool extractable,
-                      blink::WebCryptoKeyUsageMask usages,
-                      blink::WebCryptoKey* key) const override {
-    const char* algorithm_name =
-        GetJwkHmacAlgorithmName(algorithm.hmacImportParams()->hash().id());
-    if (!algorithm_name)
-      return Status::ErrorUnexpected();
-
-    std::vector<uint8_t> raw_data;
-    Status status = ReadSecretKeyJwk(key_data, algorithm_name, extractable,
-                                     usages, &raw_data);
-    if (status.IsError())
-      return status;
-
-    return ImportKeyRaw(CryptoData(raw_data), algorithm, extractable, usages,
-                        key);
-  }
-
-  Status ExportKeyRaw(const blink::WebCryptoKey& key,
-                      std::vector<uint8_t>* buffer) const override {
-    *buffer = SymKeyOpenSsl::Cast(key)->raw_key_data();
-    return Status::Success();
-  }
-
-  Status ExportKeyJwk(const blink::WebCryptoKey& key,
-                      std::vector<uint8_t>* buffer) const override {
-    SymKeyOpenSsl* sym_key = SymKeyOpenSsl::Cast(key);
-    const std::vector<uint8_t>& raw_data = sym_key->raw_key_data();
-
-    const char* algorithm_name =
-        GetJwkHmacAlgorithmName(key.algorithm().hmacParams()->hash().id());
-    if (!algorithm_name)
-      return Status::ErrorUnexpected();
-
-    WriteSecretKeyJwk(CryptoData(raw_data), algorithm_name, key.extractable(),
-                      key.usages(), buffer);
-
-    return Status::Success();
-  }
-
-  Status Sign(const blink::WebCryptoAlgorithm& algorithm,
-              const blink::WebCryptoKey& key,
-              const CryptoData& data,
-              std::vector<uint8_t>* buffer) const override {
-    const blink::WebCryptoAlgorithm& hash =
-        key.algorithm().hmacParams()->hash();
-
-    return SignHmac(SymKeyOpenSsl::Cast(key)->raw_key_data(), hash, data,
-                    buffer);
-  }
-
-  Status Verify(const blink::WebCryptoAlgorithm& algorithm,
-                const blink::WebCryptoKey& key,
-                const CryptoData& signature,
-                const CryptoData& data,
-                bool* signature_match) const override {
-    std::vector<uint8_t> result;
-    Status status = Sign(algorithm, key, data, &result);
-
-    if (status.IsError())
-      return status;
-
-    // Do not allow verification of truncated MACs.
-    *signature_match =
-        result.size() == signature.byte_length() &&
-        crypto::SecureMemEqual(vector_as_array(&result), signature.bytes(),
-                               signature.byte_length());
-
-    return Status::Success();
-  }
-
-  Status SerializeKeyForClone(
-      const blink::WebCryptoKey& key,
-      blink::WebVector<uint8_t>* key_data) const override {
-    key_data->assign(SymKeyOpenSsl::Cast(key)->serialized_key_data());
-    return Status::Success();
-  }
-
-  Status DeserializeKeyForClone(const blink::WebCryptoKeyAlgorithm& algorithm,
-                                blink::WebCryptoKeyType type,
-                                bool extractable,
-                                blink::WebCryptoKeyUsageMask usages,
-                                const CryptoData& key_data,
-                                blink::WebCryptoKey* key) const override {
-    return CreateWebCryptoSecretKey(key_data, algorithm, extractable, usages,
-                                    key);
-  }
-
-  Status GetKeyLength(const blink::WebCryptoAlgorithm& key_length_algorithm,
-                      bool* has_length_bits,
-                      unsigned int* length_bits) const override {
-    return GetHmacKeyLength(key_length_algorithm, has_length_bits, length_bits);
-  }
-};
-
-}  // namespace
-
-AlgorithmImplementation* CreatePlatformHmacImplementation() {
-  return new HmacImplementation;
-}
-
-}  // namespace webcrypto
-
-}  // namespace content