/
ecdh_keys.js
245 lines (218 loc) · 17 KB
/
ecdh_keys.js
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
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
function define_tests() {
// May want to test prefixed implementations.
var subtle = self.crypto.subtle;
var pkcs8 = {
"P-521": new Uint8Array([48, 129, 238, 2, 1, 0, 48, 16, 6, 7, 42, 134, 72, 206, 61, 2, 1, 6, 5, 43, 129, 4, 0, 35, 4, 129, 214, 48, 129, 211, 2, 1, 1, 4, 66, 1, 166, 126, 211, 33, 145, 90, 100, 170, 53, 155, 125, 100, 141, 220, 38, 24, 250, 142, 141, 24, 103, 232, 247, 24, 48, 177, 13, 37, 237, 40, 145, 250, 241, 47, 60, 126, 117, 66, 26, 46, 162, 100, 249, 169, 21, 50, 13, 39, 79, 225, 71, 7, 66, 185, 132, 233, 107, 152, 145, 32, 129, 250, 205, 71, 141, 161, 129, 137, 3, 129, 134, 0, 4, 0, 32, 157, 72, 63, 40, 102, 104, 129, 198, 100, 31, 58, 18, 111, 64, 15, 81, 228, 101, 17, 112, 254, 103, 140, 117, 232, 87, 18, 226, 134, 138, 220, 133, 8, 36, 153, 123, 235, 240, 188, 130, 180, 48, 40, 166, 210, 236, 23, 119, 202, 69, 39, 159, 114, 6, 163, 234, 139, 92, 210, 7, 63, 73, 62, 69, 0, 12, 181, 76, 58, 90, 202, 162, 104, 197, 103, 16, 66, 136, 120, 217, 139, 138, 251, 246, 138, 97, 33, 83, 99, 40, 70, 216, 7, 233, 38, 114, 105, 143, 27, 156, 97, 29, 231, 211, 142, 52, 205, 108, 115, 136, 144, 146, 197, 110, 82, 214, 128, 241, 223, 208, 146, 184, 122, 200, 239, 159, 243, 200, 251, 72]),
"P-256": new Uint8Array([48, 129, 135, 2, 1, 0, 48, 19, 6, 7, 42, 134, 72, 206, 61, 2, 1, 6, 8, 42, 134, 72, 206, 61, 3, 1, 7, 4, 109, 48, 107, 2, 1, 1, 4, 32, 15, 247, 79, 232, 241, 202, 175, 97, 92, 206, 241, 29, 217, 53, 114, 87, 98, 217, 216, 65, 236, 186, 185, 94, 170, 38, 68, 123, 52, 100, 245, 113, 161, 68, 3, 66, 0, 4, 140, 96, 11, 44, 102, 25, 45, 97, 158, 39, 210, 37, 107, 59, 151, 118, 178, 141, 30, 5, 246, 13, 234, 189, 98, 174, 123, 154, 211, 157, 224, 217, 59, 4, 102, 109, 199, 119, 14, 126, 207, 13, 211, 203, 203, 211, 110, 221, 107, 94, 220, 153, 81, 7, 55, 161, 237, 104, 46, 205, 112, 244, 10, 47]),
"P-384": new Uint8Array([48, 129, 182, 2, 1, 0, 48, 16, 6, 7, 42, 134, 72, 206, 61, 2, 1, 6, 5, 43, 129, 4, 0, 34, 4, 129, 158, 48, 129, 155, 2, 1, 1, 4, 48, 248, 113, 165, 102, 101, 137, 193, 74, 87, 71, 38, 62, 248, 91, 49, 156, 192, 35, 219, 110, 53, 103, 108, 61, 120, 30, 239, 139, 5, 95, 207, 190, 134, 250, 13, 6, 208, 86, 181, 25, 95, 177, 50, 58, 248, 222, 37, 179, 161, 100, 3, 98, 0, 4, 241, 25, 101, 223, 125, 212, 89, 77, 4, 25, 197, 8, 100, 130, 163, 184, 38, 185, 121, 127, 155, 224, 189, 13, 16, 156, 158, 30, 153, 137, 193, 185, 169, 43, 143, 38, 159, 152, 225, 122, 209, 132, 186, 115, 193, 247, 151, 98, 175, 69, 175, 129, 65, 96, 38, 66, 218, 39, 26, 107, 176, 255, 235, 12, 180, 71, 143, 207, 112, 126, 102, 26, 166, 214, 205, 245, 21, 73, 200, 140, 63, 19, 11, 233, 232, 32, 31, 111, 106, 9, 244, 24, 90, 175, 149, 196])
};
var spki = {
"P-521": new Uint8Array([48, 129, 155, 48, 16, 6, 7, 42, 134, 72, 206, 61, 2, 1, 6, 5, 43, 129, 4, 0, 35, 3, 129, 134, 0, 4, 0, 238, 105, 249, 71, 21, 215, 1, 233, 226, 1, 19, 51, 212, 244, 249, 108, 186, 125, 145, 248, 139, 17, 43, 175, 117, 207, 9, 204, 31, 138, 202, 151, 97, 141, 169, 56, 152, 34, 210, 155, 111, 233, 153, 106, 97, 32, 62, 247, 82, 183, 113, 232, 149, 143, 196, 103, 123, 179, 119, 133, 101, 171, 96, 214, 237, 0, 222, 171, 103, 97, 137, 91, 147, 94, 58, 211, 37, 251, 133, 73, 229, 111, 19, 120, 106, 167, 63, 136, 162, 236, 254, 64, 147, 52, 115, 216, 174, 242, 64, 196, 223, 215, 213, 6, 242, 44, 221, 14, 85, 85, 143, 63, 191, 5, 235, 247, 239, 239, 122, 114, 215, 143, 70, 70, 155, 132, 72, 242, 110, 39, 18]),
"P-256": new Uint8Array([48, 89, 48, 19, 6, 7, 42, 134, 72, 206, 61, 2, 1, 6, 8, 42, 134, 72, 206, 61, 3, 1, 7, 3, 66, 0, 4, 154, 116, 32, 120, 126, 95, 77, 105, 211, 232, 34, 114, 115, 1, 109, 56, 224, 71, 129, 133, 223, 127, 238, 156, 142, 103, 60, 202, 211, 79, 126, 128, 254, 49, 141, 182, 221, 107, 119, 218, 99, 32, 165, 246, 151, 89, 9, 68, 23, 177, 52, 239, 138, 139, 116, 193, 101, 4, 57, 198, 115, 0, 90, 61]),
"P-384": new Uint8Array([48, 118, 48, 16, 6, 7, 42, 134, 72, 206, 61, 2, 1, 6, 5, 43, 129, 4, 0, 34, 3, 98, 0, 4, 145, 130, 45, 194, 175, 89, 193, 143, 91, 103, 248, 13, 246, 26, 38, 3, 194, 168, 240, 179, 192, 175, 130, 45, 99, 194, 121, 112, 26, 130, 69, 96, 64, 68, 1, 221, 233, 165, 110, 229, 39, 87, 234, 139, 199, 72, 212, 200, 43, 83, 55, 180, 141, 123, 101, 88, 58, 61, 87, 36, 56, 136, 0, 54, 186, 198, 115, 15, 66, 202, 82, 120, 150, 107, 213, 242, 30, 134, 226, 29, 48, 197, 166, 208, 70, 62, 197, 19, 221, 80, 159, 252, 220, 175, 31, 245])
};
var sizes = {
"P-521": 66,
"P-256": 32,
"P-384": 48
};
var derivations = {
"P-521": new Uint8Array([0, 156, 43, 206, 87, 190, 128, 173, 171, 59, 7, 56, 91, 142, 89, 144, 235, 125, 111, 222, 189, 176, 27, 243, 83, 113, 164, 246, 7, 94, 157, 40, 138, 193, 42, 109, 254, 3, 170, 87, 67, 188, 129, 112, 157, 73, 168, 34, 148, 2, 25, 182, 75, 118, 138, 205, 82, 15, 161, 54, 142, 160, 175, 141, 71, 93]),
"P-256": new Uint8Array([14, 143, 60, 77, 177, 178, 162, 131, 115, 90, 0, 220, 87, 31, 26, 232, 151, 28, 227, 35, 250, 17, 131, 137, 203, 95, 65, 196, 59, 61, 181, 161]),
"P-384": new Uint8Array([224, 189, 107, 206, 10, 239, 140, 164, 136, 56, 166, 226, 252, 197, 126, 103, 185, 197, 232, 134, 12, 95, 11, 233, 218, 190, 197, 62, 69, 78, 24, 160, 161, 116, 196, 136, 136, 162, 100, 136, 17, 91, 45, 201, 241, 223, 165, 45])
};
return importKeys(pkcs8, spki, sizes)
.then(function(results) {
publicKeys = results.publicKeys;
privateKeys = results.privateKeys;
ecdsaKeyPairs = results.ecdsaKeyPairs;
noDeriveKeyKeys = results.noDeriveKeyKeys;
Object.keys(sizes).forEach(function(namedCurve) {
// Basic success case
promise_test(function(test) {
return subtle.deriveKey({name: "ECDH", public: publicKeys[namedCurve]}, privateKeys[namedCurve], {name: "HMAC", hash: "SHA-256", length: 256}, true, ["sign", "verify"])
.then(function(key) {return crypto.subtle.exportKey("raw", key);})
.then(function(exportedKey) {
assert_true(equalBuffers(exportedKey, derivations[namedCurve], 8 * exportedKey.length), "Derived correct key");
}, function(err) {
assert_unreached("deriveKey failed with error " + err.name + ": " + err.message);
});
}, namedCurve + " good parameters");
// Case insensitivity check
promise_test(function(test) {
return subtle.deriveKey({name: "EcDh", public: publicKeys[namedCurve]}, privateKeys[namedCurve], {name: "HMAC", hash: "SHA-256", length: 256}, true, ["sign", "verify"])
.then(function(key) {return crypto.subtle.exportKey("raw", key);})
.then(function(exportedKey) {
assert_true(equalBuffers(exportedKey, derivations[namedCurve], 8 * exportedKey.length), "Derived correct key");
}, function(err) {
assert_unreached("deriveKey failed with error " + err.name + ": " + err.message);
});
}, namedCurve + " mixed case parameters");
// Errors to test:
// - missing public property TypeError
promise_test(function(test) {
return subtle.deriveKey({name: "ECDH"}, privateKeys[namedCurve], {name: "HMAC", hash: "SHA-256", length: 256}, true, ["sign", "verify"])
.then(function(key) {return crypto.subtle.exportKey("raw", key);})
.then(function(exportedKey) {
assert_unreached("deriveKey succeeded but should have failed with TypeError");
}, function(err) {
assert_equals(err.name, "TypeError", "Should throw correct error, not " + err.name + ": " + err.message);
});
}, namedCurve + " missing public curve");
// - Non CryptoKey public property TypeError
promise_test(function(test) {
return subtle.deriveKey({name: "ECDH", public: {message: "Not a CryptoKey"}}, privateKeys[namedCurve], {name: "HMAC", hash: "SHA-256", length: 256}, true, ["sign", "verify"])
.then(function(key) {return crypto.subtle.exportKey("raw", key);})
.then(function(exportedKey) {
assert_unreached("deriveKey succeeded but should have failed with TypeError");
}, function(err) {
assert_equals(err.name, "TypeError", "Should throw correct error, not " + err.name + ": " + err.message);
});
}, namedCurve + " public property of algorithm is not a CryptoKey");
// - wrong named curve
promise_test(function(test) {
publicKey = publicKeys["P-256"];
if (namedCurve === "P-256") {
publicKey = publicKeys["P-384"];
}
return subtle.deriveKey({name: "ECDH", public: publicKey}, privateKeys[namedCurve], {name: "HMAC", hash: "SHA-256", length: 256}, true, ["sign", "verify"])
.then(function(key) {return crypto.subtle.exportKey("raw", key);})
.then(function(exportedKey) {
assert_unreached("deriveKey succeeded but should have failed with InvalidAccessError");
}, function(err) {
assert_equals(err.name, "InvalidAccessError", "Should throw correct error, not " + err.name + ": " + err.message);
});
}, namedCurve + " mismatched curves");
// - not ECDH public property InvalidAccessError
promise_test(function(test) {
return subtle.deriveKey({name: "ECDH", public: ecdsaKeyPairs[namedCurve].publicKey}, privateKeys[namedCurve], {name: "HMAC", hash: "SHA-256", length: 256}, true, ["sign", "verify"])
.then(function(key) {return crypto.subtle.exportKey("raw", key);})
.then(function(exportedKey) {
assert_unreached("deriveKey succeeded but should have failed with InvalidAccessError");
}, function(err) {
assert_equals(err.name, "InvalidAccessError", "Should throw correct error, not " + err.name + ": " + err.message);
});
}, namedCurve + " public property of algorithm is not an ECDSA public key");
// - No deriveKey usage in baseKey InvalidAccessError
promise_test(function(test) {
return subtle.deriveKey({name: "ECDH", public: publicKeys[namedCurve]}, noDeriveKeyKeys[namedCurve], {name: "HMAC", hash: "SHA-256", length: 256}, true, ["sign", "verify"])
.then(function(key) {return crypto.subtle.exportKey("raw", key);})
.then(function(exportedKey) {
assert_unreached("deriveKey succeeded but should have failed with InvalidAccessError");
}, function(err) {
assert_equals(err.name, "InvalidAccessError", "Should throw correct error, not " + err.name + ": " + err.message);
});
}, namedCurve + " no deriveKey usage for base key");
// - Use public key for baseKey InvalidAccessError
promise_test(function(test) {
return subtle.deriveKey({name: "ECDH", public: publicKeys[namedCurve]}, publicKeys[namedCurve], {name: "HMAC", hash: "SHA-256", length: 256}, true, ["sign", "verify"])
.then(function(key) {return crypto.subtle.exportKey("raw", key);})
.then(function(exportedKey) {
assert_unreached("deriveKey succeeded but should have failed with InvalidAccessError");
}, function(err) {
assert_equals(err.name, "InvalidAccessError", "Should throw correct error, not " + err.name + ": " + err.message);
});
}, namedCurve + " base key is not a private key");
// - Use private key for public property InvalidAccessError
promise_test(function(test) {
return subtle.deriveKey({name: "ECDH", public: privateKeys[namedCurve]}, privateKeys[namedCurve], {name: "HMAC", hash: "SHA-256", length: 256}, true, ["sign", "verify"])
.then(function(key) {return crypto.subtle.exportKey("raw", key);})
.then(function(exportedKey) {
assert_unreached("deriveKey succeeded but should have failed with InvalidAccessError");
}, function(err) {
assert_equals(err.name, "InvalidAccessError", "Should throw correct error, not " + err.name + ": " + err.message);
});
}, namedCurve + " public property value is a private key");
// - Use secret key for public property InvalidAccessError
promise_test(function(test) {
return subtle.generateKey({name: "HMAC", hash: "SHA-256", length: 256}, true, ["sign", "verify"])
.then(function(secretKey) {
return subtle.deriveKey({name: "ECDH", public: secretKey}, privateKeys[namedCurve], {name: "AES-CBC", length: 256}, true, ["sign", "verify"])
.then(function(key) {return crypto.subtle.exportKey("raw", key);})
.then(function(exportedKey) {
assert_unreached("deriveKey succeeded but should have failed with InvalidAccessError");
}, function(err) {
assert_equals(err.name, "InvalidAccessError", "Should throw correct error, not " + err.name + ": " + err.message);
});
});
}, namedCurve + " public property value is a secret key");
});
});
function importKeys(pkcs8, spki, sizes) {
var privateKeys = {};
var publicKeys = {};
var ecdsaKeyPairs = {};
var noDeriveKeyKeys = {};
var promises = [];
Object.keys(pkcs8).forEach(function(namedCurve) {
var operation = subtle.importKey("pkcs8", pkcs8[namedCurve],
{name: "ECDH", namedCurve: namedCurve},
false, ["deriveBits", "deriveKey"])
.then(function(key) {
privateKeys[namedCurve] = key;
}, function (err) {
privateKeys[namedCurve] = null;
});
promises.push(operation);
});
Object.keys(pkcs8).forEach(function(namedCurve) {
var operation = subtle.importKey("pkcs8", pkcs8[namedCurve],
{name: "ECDH", namedCurve: namedCurve},
false, ["deriveBits"])
.then(function(key) {
noDeriveKeyKeys[namedCurve] = key;
}, function (err) {
noDeriveKeyKeys[namedCurve] = null;
});
promises.push(operation);
});
Object.keys(spki).forEach(function(namedCurve) {
var operation = subtle.importKey("spki", spki[namedCurve],
{name: "ECDH", namedCurve: namedCurve},
false, [])
.then(function(key) {
publicKeys[namedCurve] = key;
}, function (err) {
publicKeys[namedCurve] = null;
});
promises.push(operation);
});
Object.keys(sizes).forEach(function(namedCurve) {
var operation = subtle.generateKey({name: "ECDSA", namedCurve: namedCurve}, false, ["sign", "verify"])
.then(function(keyPair) {
ecdsaKeyPairs[namedCurve] = keyPair;
}, function (err) {
ecdsaKeyPairs[namedCurve] = null;
});
promises.push(operation);
});
return Promise.all(promises)
.then(function(results) {return {privateKeys: privateKeys, publicKeys: publicKeys, ecdsaKeyPairs: ecdsaKeyPairs, noDeriveKeyKeys: noDeriveKeyKeys}});
}
// Compares two ArrayBuffer or ArrayBufferView objects. If bitCount is
// omitted, the two values must be the same length and have the same contents
// in every byte. If bitCount is included, only that leading number of bits
// have to match.
function equalBuffers(a, b, bitCount) {
var remainder;
if (typeof bitCount === "undefined" && a.byteLength !== b.byteLength) {
return false;
}
var aBytes = new Uint8Array(a);
var bBytes = new Uint8Array(b);
var length = a.byteLength;
if (typeof bitCount !== "undefined") {
length = Math.floor(bitCount / 8);
}
for (var i=0; i<length; i++) {
if (aBytes[i] !== bBytes[i]) {
return false;
}
}
if (typeof bitCount !== "undefined") {
remainder = bitCount % 8;
return aBytes[length] >> (8 - remainder) === bBytes[length] >> (8 - remainder);
}
return true;
}
}