Files
platform-external-webrtc/rtc_base/key_derivation.cc
Benjamin Wright b3f887b823 Expose key derivation through a simple interface for use in WebRTC.
This change just wraps the openssl key derivation functions in a simple
interface in a similar way to how we do it for messagedigest.h so we aren't
coupled to openssl in the core implementation.

Bug: webrtc:9917
Change-Id: I8556bd6e38b7da34d93abbe29415c3366f6532ba
Reviewed-on: https://webrtc-review.googlesource.com/c/107981
Reviewed-by: Qingsi Wang <qingsi@webrtc.org>
Commit-Queue: Benjamin Wright <benwright@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25440}
2018-10-30 21:44:28 +00:00

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/*
* Copyright 2018 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "rtc_base/key_derivation.h"
#include "absl/memory/memory.h"
#include "rtc_base/openssl_key_derivation_hkdf.h"
namespace rtc {
KeyDerivation::KeyDerivation() = default;
KeyDerivation::~KeyDerivation() = default;
// static
std::unique_ptr<KeyDerivation> KeyDerivation::Create(
KeyDerivationAlgorithm key_derivation_algorithm) {
switch (key_derivation_algorithm) {
case KeyDerivationAlgorithm::HKDF_SHA256:
return absl::make_unique<OpenSSLKeyDerivationHKDF>();
}
RTC_NOTREACHED();
}
} // namespace rtc