gecko-dev/dom/u2f/U2FUtil.h

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C
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_U2FUtil_h
#define mozilla_dom_U2FUtil_h
namespace mozilla {
namespace dom {
static nsresult
HashCString(nsICryptoHash* aHashService, const nsACString& aIn,
/* out */ CryptoBuffer& aOut)
{
MOZ_ASSERT(aHashService);
nsresult rv = aHashService->Init(nsICryptoHash::SHA256);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
rv = aHashService->Update(
reinterpret_cast<const uint8_t*>(aIn.BeginReading()), aIn.Length());
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
nsAutoCString fullHash;
// Passing false below means we will get a binary result rather than a
// base64-encoded string.
rv = aHashService->Finish(false, fullHash);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
aOut.Assign(fullHash);
return rv;
}
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_U2FUtil_h