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
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
/**
* Copyright (C) 2019-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#pragma once
#include <cstddef>
#include <cstdint>
#include "mongo/base/data_view.h"
#include "mongo/base/status.h"
#include "mongo/crypto/symmetric_key.h"
namespace mongo {
namespace crypto {
/**
* Constants used in the AEAD function
*/
constexpr size_t kFieldLevelEncryptionKeySize = 96;
constexpr size_t kAeadAesHmacKeySize = 64;
/**
* Returns the length of the ciphertext output given the plaintext length. Only for AEAD.
*/
size_t aeadCipherOutputLength(size_t plainTextLen);
/**
* Returns the length of the plaintext output given the ciphertext length. Only for AEAD.
*/
StatusWith<size_t> aeadGetMaximumPlainTextLength(size_t cipherTextLen);
/**
* Encrypts the plaintext using following the AEAD_AES_256_CBC_HMAC_SHA_512 encryption
* algorithm. Writes output to out.
*/
Status aeadEncrypt(const SymmetricKey& key,
const uint8_t* in,
const size_t inLen,
const uint8_t* associatedData,
const uint64_t associatedDataLen,
uint8_t* out,
size_t outLen);
/**
* Internal calls for the aeadEncryption algorithm. Only used for testing.
*/
Status aeadEncryptWithIV(ConstDataRange key,
const uint8_t* in,
const size_t inLen,
const uint8_t* iv,
const size_t ivLen,
const uint8_t* associatedData,
const uint64_t associatedDataLen,
ConstDataRange dataLenBitsEncodedStorage,
uint8_t* out,
size_t outLen);
/**
* Decrypts the cipherText using AEAD_AES_256_CBC_HMAC_SHA_512 decryption. Writes output
* to out.
*/
Status aeadDecrypt(const SymmetricKey& key,
const uint8_t* cipherText,
const size_t cipherLen,
const uint8_t* associatedData,
const uint64_t associatedDataLen,
uint8_t* out,
size_t* outLen);
} // namespace crypto
} // namespace mongo
|
