forked from nodejs/node
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathmac.js
More file actions
206 lines (183 loc) · 4.57 KB
/
Copy pathmac.js
File metadata and controls
206 lines (183 loc) · 4.57 KB
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
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
'use strict';
const {
SafeSet,
StringPrototypeSubstring,
} = primordials;
const {
HmacJob,
KmacJob,
kCryptoJobWebCrypto,
kSignJobModeSign,
kSignJobModeVerify,
SecretKeyGenJob,
} = internalBinding('crypto');
const {
getBlockSize,
getUsagesMask,
hasAnyNotIn,
jobPromise,
normalizeHashName,
} = require('internal/crypto/util');
const {
lazyDOMException,
} = require('internal/util');
const {
InternalCryptoKey,
getCryptoKeyAlgorithm,
getCryptoKeyHandle,
getKeyObjectHandle,
getKeyObjectSymmetricKeySize,
} = require('internal/crypto/keys');
const {
importJwkSecretKey,
importSecretKey,
validateJwk,
} = require('internal/crypto/webcrypto_util');
function hmacGenerateKey(algorithm, extractable, usages) {
const {
hash,
name,
length = getBlockSize(hash.name),
} = algorithm;
const usageSet = new SafeSet(usages);
if (hasAnyNotIn(usageSet, ['sign', 'verify'])) {
throw lazyDOMException(
'Unsupported key usage for an HMAC key',
'SyntaxError');
}
if (usageSet.size === 0) {
throw lazyDOMException(
'Usages cannot be empty when creating a key.',
'SyntaxError');
}
return jobPromise(() => new SecretKeyGenJob(
kCryptoJobWebCrypto,
length,
{ name, length, hash },
getUsagesMask(usageSet),
extractable));
}
function kmacGenerateKey(algorithm, extractable, usages) {
const {
name,
length = {
__proto__: null,
KMAC128: 128,
KMAC256: 256,
}[name],
} = algorithm;
const usageSet = new SafeSet(usages);
if (hasAnyNotIn(usageSet, ['sign', 'verify'])) {
throw lazyDOMException(
`Unsupported key usage for ${name} key`,
'SyntaxError');
}
if (usageSet.size === 0) {
throw lazyDOMException(
'Usages cannot be empty when creating a key.',
'SyntaxError');
}
return jobPromise(() => new SecretKeyGenJob(
kCryptoJobWebCrypto,
length,
{ name, length },
getUsagesMask(usageSet),
extractable));
}
function macImportKey(
format,
keyData,
algorithm,
extractable,
usages,
) {
const isHmac = algorithm.name === 'HMAC';
const usagesSet = new SafeSet(usages);
if (hasAnyNotIn(usagesSet, ['sign', 'verify'])) {
throw lazyDOMException(
`Unsupported key usage for ${algorithm.name} key`,
'SyntaxError');
}
let handle;
let length;
switch (format) {
case 'KeyObject': {
length = getKeyObjectSymmetricKeySize(keyData) * 8;
handle = getKeyObjectHandle(keyData);
break;
}
case 'raw-secret':
case 'raw': {
if (format === 'raw' && !isHmac) {
return undefined;
}
length = keyData.byteLength * 8;
handle = importSecretKey(keyData);
break;
}
case 'jwk': {
validateJwk(keyData, 'oct', extractable, usagesSet, 'sig');
if (keyData.alg !== undefined) {
const expected = isHmac ?
normalizeHashName(algorithm.hash.name, normalizeHashName.kContextJwkHmac) :
`K${StringPrototypeSubstring(algorithm.name, 4)}`;
if (expected && keyData.alg !== expected)
throw lazyDOMException(
'JWK "alg" does not match the requested algorithm',
'DataError');
}
handle = importJwkSecretKey(keyData);
length = handle.getSymmetricKeySize() * 8;
break;
}
default:
return undefined;
}
if (length === 0)
throw lazyDOMException('Zero-length key is not supported', 'DataError');
if (algorithm.length !== undefined &&
algorithm.length !== length) {
throw lazyDOMException('Invalid key length', 'DataError');
}
const algorithmObject = {
name: algorithm.name,
length,
};
if (isHmac) {
algorithmObject.hash = algorithm.hash;
}
return new InternalCryptoKey(
handle,
algorithmObject,
getUsagesMask(usagesSet),
extractable);
}
function hmacSignVerify(key, data, algorithm, signature) {
const mode = signature === undefined ? kSignJobModeSign : kSignJobModeVerify;
return jobPromise(() => new HmacJob(
kCryptoJobWebCrypto,
mode,
normalizeHashName(getCryptoKeyAlgorithm(key).hash.name),
getCryptoKeyHandle(key),
data,
signature));
}
function kmacSignVerify(key, data, algorithm, signature) {
const mode = signature === undefined ? kSignJobModeSign : kSignJobModeVerify;
return jobPromise(() => new KmacJob(
kCryptoJobWebCrypto,
mode,
getCryptoKeyHandle(key),
algorithm.name,
algorithm.customization,
algorithm.outputLength / 8,
data,
signature));
}
module.exports = {
macImportKey,
hmacGenerateKey,
hmacSignVerify,
kmacGenerateKey,
kmacSignVerify,
};