blob: 1e77675c036a0319ff40e225cb5efb678987dabb (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
/* 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.hh"
#include <cstddef>
#include <cstdint>
namespace olm {
struct Ed25519PublicKey;
struct Utility {
Utility();
ErrorCode 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(
Ed25519PublicKey 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_ */
|
