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

content/child/webcrypto/openssl/hkdf_openssl.cc

Index: content/child/webcrypto/openssl/hkdf_openssl.cc
diff --git a/content/child/webcrypto/openssl/hkdf_openssl.cc b/content/child/webcrypto/openssl/hkdf_openssl.cc
deleted file mode 100644
index 13005baabfb0a2f55b52882e35250d8fc426a0c1..0000000000000000000000000000000000000000
--- a/content/child/webcrypto/openssl/hkdf_openssl.cc
+++ /dev/null
@@ -1,124 +0,0 @@
-// Copyright 2015 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/err.h>
-#include <openssl/hkdf.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/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 "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h"
-#include "third_party/WebKit/public/platform/WebCryptoKeyAlgorithm.h"
-
-namespace content {
-
-namespace webcrypto {
-
-namespace {
-
-const blink::WebCryptoKeyUsageMask kValidUsages =
-    blink::WebCryptoKeyUsageDeriveKey | blink::WebCryptoKeyUsageDeriveBits;
-
-class HkdfImplementation : public AlgorithmImplementation {
- public:
-  HkdfImplementation() {}
-
-  Status VerifyKeyUsagesBeforeImportKey(
-      blink::WebCryptoKeyFormat format,
-      blink::WebCryptoKeyUsageMask usages) const override {
-    if (format != blink::WebCryptoKeyFormatRaw)
-      return Status::ErrorUnsupportedImportKeyFormat();
-    return CheckKeyCreationUsages(kValidUsages, usages, false);
-  }
-
-  Status ImportKeyRaw(const CryptoData& key_data,
-                      const blink::WebCryptoAlgorithm& algorithm,
-                      bool extractable,
-                      blink::WebCryptoKeyUsageMask usages,
-                      blink::WebCryptoKey* key) const override {
-    return CreateWebCryptoSecretKey(
-        key_data, blink::WebCryptoKeyAlgorithm::createWithoutParams(
-                      blink::WebCryptoAlgorithmIdHkdf),
-        extractable, usages, key);
-  }
-
-  Status DeriveBits(const blink::WebCryptoAlgorithm& algorithm,
-                    const blink::WebCryptoKey& base_key,
-                    bool has_optional_length_bits,
-                    unsigned int optional_length_bits,
-                    std::vector<uint8_t>* derived_bytes) const override {
-    crypto::OpenSSLErrStackTracer err_tracer(FROM_HERE);
-    if (!has_optional_length_bits)
-      return Status::ErrorHkdfDeriveBitsLengthNotSpecified();
-
-    const blink::WebCryptoHkdfParams* params = algorithm.hkdfParams();
-
-    const EVP_MD* digest_algorithm = GetDigest(params->hash().id());
-    if (!digest_algorithm)
-      return Status::ErrorUnsupported();
-
-    // Size output to fit length
-    unsigned int derived_bytes_len = NumBitsToBytes(optional_length_bits);
-    derived_bytes->resize(derived_bytes_len);
-
-    // Algorithm dispatch checks that the algorithm in |base_key| matches
-    // |algorithm|.
-    const std::vector<uint8_t>& raw_key =
-        SymKeyOpenSsl::Cast(base_key)->raw_key_data();
-    if (!HKDF(vector_as_array(derived_bytes), derived_bytes_len,
-              digest_algorithm, vector_as_array(&raw_key), raw_key.size(),
-              params->salt().data(), params->salt().size(),
-              params->info().data(), params->info().size())) {
-      uint32_t error = ERR_get_error();
-      if (ERR_GET_LIB(error) == ERR_LIB_HKDF &&
-          ERR_GET_REASON(error) == HKDF_R_OUTPUT_TOO_LARGE) {
-        return Status::ErrorHkdfLengthTooLong();
-      }
-      return Status::OperationError();
-    }
-
-    TruncateToBitLength(optional_length_bits, derived_bytes);
-    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 {
-    *has_length_bits = false;
-    return Status::Success();
-  }
-};
-
-}  // namespace
-
-AlgorithmImplementation* CreatePlatformHkdfImplementation() {
-  return new HkdfImplementation;
-}
-
-}  // namespace webcrypto
-
-}  // namespace content