From f9f7d130e5768d0f69edc8900d37f540b61fa974 Mon Sep 17 00:00:00 2001 From: Carl Schwan Date: Sat, 30 Jan 2021 00:21:10 +0100 Subject: Key verification --- lib/crypto/qolmutility.cpp | 58 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 lib/crypto/qolmutility.cpp (limited to 'lib/crypto/qolmutility.cpp') diff --git a/lib/crypto/qolmutility.cpp b/lib/crypto/qolmutility.cpp new file mode 100644 index 00000000..3c6a14c7 --- /dev/null +++ b/lib/crypto/qolmutility.cpp @@ -0,0 +1,58 @@ +// SPDX-FileCopyrightText: 2021 Carl Schwan +// +// SPDX-License-Identifier: LGPL-2.1-or-later + +#ifdef Quotient_E2EE_ENABLED +#include "crypto/qolmutility.h" +#include "olm/olm.h" + +using namespace Quotient; + +// Convert olm error to enum +QOlmError lastError(OlmUtility *utility) { + const std::string error_raw = olm_utility_last_error(utility); + + return fromString(error_raw); +} + +QOlmUtility::QOlmUtility() +{ + auto utility = new uint8_t[olm_utility_size()]; + m_utility = olm_utility(utility); +} + +QOlmUtility::~QOlmUtility() +{ + olm_clear_utility(m_utility); + delete[](reinterpret_cast(m_utility)); +} + +QString QOlmUtility::sha256Bytes(const QByteArray &inputBuf) const +{ + const auto outputLen = olm_sha256_length(m_utility); + QByteArray outputBuf(outputLen, '0'); + olm_sha256(m_utility, inputBuf.data(), inputBuf.length(), + outputBuf.data(), outputBuf.length()); + + return QString::fromUtf8(outputBuf); +} + +QString QOlmUtility::sha256Utf8Msg(const QString &message) const +{ + return sha256Bytes(message.toUtf8()); +} + +std::variant QOlmUtility::ed25519Verify(const QByteArray &key, + const QByteArray &message, QByteArray &signature) +{ + const auto error = olm_ed25519_verify(m_utility, key.data(), key.length(), + message.data(), message.length(), signature.data(), signature.length()); + + if (error == olm_error()) { + return lastError(m_utility); + } + return error == 0; +} + + +#endif -- cgit v1.2.3