61 lines
1.9 KiB
C++
61 lines
1.9 KiB
C++
/* Copyright 2015 OpenMarket Ltd
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef UTILITY_HH_
|
|
#define UTILITY_HH_
|
|
|
|
#include "olm/error.h"
|
|
|
|
#include <cstddef>
|
|
#include <cstdint>
|
|
|
|
struct _olm_ed25519_public_key;
|
|
|
|
namespace olm {
|
|
|
|
struct Utility {
|
|
|
|
Utility();
|
|
|
|
OlmErrorCode last_error;
|
|
|
|
/** The length of a SHA-256 hash in bytes. */
|
|
std::size_t sha256_length();
|
|
|
|
/** Compute a SHA-256 hash. Returns the length of the SHA-256 hash in bytes
|
|
* on success. Returns std::size_t(-1) on failure. On failure last_error
|
|
* will be set with an error code. If the output buffer was too small then
|
|
* last error will be OUTPUT_BUFFER_TOO_SMALL. */
|
|
std::size_t sha256(
|
|
std::uint8_t const * input, std::size_t input_length,
|
|
std::uint8_t * output, std::size_t output_length
|
|
);
|
|
|
|
/** Verify a ed25519 signature. Returns std::size_t(0) on success. Returns
|
|
* std::size_t(-1) on failure or if the signature was invalid. On failure
|
|
* last_error will be set with an error code. If the signature was too short
|
|
* or was not a valid signature then last_error will be BAD_MESSAGE_MAC. */
|
|
std::size_t ed25519_verify(
|
|
_olm_ed25519_public_key const & key,
|
|
std::uint8_t const * message, std::size_t message_length,
|
|
std::uint8_t const * signature, std::size_t signature_length
|
|
);
|
|
|
|
};
|
|
|
|
|
|
} // namespace olm
|
|
|
|
#endif /* UTILITY_HH_ */
|