58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
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/* Copyright 2015 OpenMarket Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "olm/utility.hh"
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#include "olm/crypto.hh"
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olm::Utility::Utility(
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) : last_error(olm::ErrorCode::SUCCESS) {
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}
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size_t olm::Utility::sha256_length() {
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return olm::HMAC_SHA256_OUTPUT_LENGTH;
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}
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size_t olm::Utility::sha256(
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std::uint8_t const * input, std::size_t input_length,
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std::uint8_t * output, std::size_t output_length
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) {
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if (output_length < sha256_length()) {
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last_error = olm::ErrorCode::OUTPUT_BUFFER_TOO_SMALL;
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return std::size_t(-1);
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}
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olm::sha256(input, input_length, output);
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return 32;
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}
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size_t olm::Utility::ed25519_verify(
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Ed25519PublicKey const & key,
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std::uint8_t const * message, std::size_t message_length,
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std::uint8_t const * signature, std::size_t signature_length
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) {
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if (signature_length < 64) {
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last_error = olm::ErrorCode::BAD_MESSAGE_MAC;
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return std::size_t(-1);
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}
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if (!olm::ed25519_verify(key, message, message_length, signature)) {
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last_error = olm::ErrorCode::BAD_MESSAGE_MAC;
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return std::size_t(-1);
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}
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return std::size_t(0);
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}
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