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
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
|
import base64url from 'base64url';
import verifyAssertionResponse from './verifyAssertionResponse';
import * as decodeClientDataJSON from '../helpers/decodeClientDataJSON';
import * as parseAuthenticatorData from '../helpers/parseAuthenticatorData';
import toHash from '../helpers/toHash';
let mockDecodeClientData: jest.SpyInstance;
let mockParseAuthData: jest.SpyInstance;
beforeEach(() => {
mockDecodeClientData = jest.spyOn(decodeClientDataJSON, 'default');
mockParseAuthData = jest.spyOn(parseAuthenticatorData, 'default');
});
afterEach(() => {
mockDecodeClientData.mockRestore();
mockParseAuthData.mockRestore();
});
test('should verify an assertion response', () => {
const verification = verifyAssertionResponse({
credential: assertionResponse,
expectedChallenge: assertionChallenge,
expectedOrigin: assertionOrigin,
expectedRPID: 'dev.dontneeda.pw',
authenticator: authenticator,
});
expect(verification.verified).toEqual(true);
});
test('should return authenticator info after verification', () => {
const verification = verifyAssertionResponse({
credential: assertionResponse,
expectedChallenge: assertionChallenge,
expectedOrigin: assertionOrigin,
expectedRPID: 'dev.dontneeda.pw',
authenticator: authenticator,
});
expect(verification.authenticatorInfo.counter).toEqual(144);
expect(verification.authenticatorInfo.base64CredentialID).toEqual(authenticator.credentialID);
});
test('should throw when response challenge is not expected value', () => {
expect(() => {
verifyAssertionResponse({
credential: assertionResponse,
expectedChallenge: 'shouldhavebeenthisvalue',
expectedOrigin: 'https://different.address',
expectedRPID: 'dev.dontneeda.pw',
authenticator: authenticator,
});
}).toThrow(/assertion challenge/i);
});
test('should throw when response origin is not expected value', () => {
expect(() => {
verifyAssertionResponse({
credential: assertionResponse,
expectedChallenge: assertionChallenge,
expectedOrigin: 'https://different.address',
expectedRPID: 'dev.dontneeda.pw',
authenticator: authenticator,
});
}).toThrow(/assertion origin/i);
});
test('should throw when assertion type is not webauthn.create', () => {
// @ts-ignore 2345
mockDecodeClientData.mockReturnValue({
origin: assertionOrigin,
type: 'webauthn.badtype',
challenge: assertionChallenge,
});
expect(() => {
verifyAssertionResponse({
credential: assertionResponse,
expectedChallenge: assertionChallenge,
expectedOrigin: assertionOrigin,
expectedRPID: 'dev.dontneeda.pw',
authenticator: authenticator,
});
}).toThrow(/assertion type/i);
});
test('should throw error if user was not present', () => {
mockParseAuthData.mockReturnValue({
rpIdHash: toHash(Buffer.from('dev.dontneeda.pw', 'ascii')),
flags: 0,
});
expect(() => {
verifyAssertionResponse({
credential: assertionResponse,
expectedChallenge: assertionChallenge,
expectedOrigin: assertionOrigin,
expectedRPID: 'dev.dontneeda.pw',
authenticator: authenticator,
});
}).toThrow(/not present/i);
});
test('should throw error if previous counter value is not less than in response', () => {
// This'll match the `counter` value in `assertionResponse`, simulating a potential replay attack
const badCounter = 144;
const badDevice = {
...authenticator,
counter: badCounter,
};
expect(() => {
verifyAssertionResponse({
credential: assertionResponse,
expectedChallenge: assertionChallenge,
expectedOrigin: assertionOrigin,
expectedRPID: 'dev.dontneeda.pw',
authenticator: badDevice,
});
}).toThrow(/counter value/i);
});
test('should throw error if assertion RP ID is unexpected value', () => {
mockParseAuthData.mockReturnValue({
rpIdHash: toHash(Buffer.from('bad.url', 'ascii')),
flags: 0,
});
expect(() => {
verifyAssertionResponse({
credential: assertionResponse,
expectedChallenge: assertionChallenge,
expectedOrigin: assertionOrigin,
expectedRPID: 'dev.dontneeda.pw',
authenticator: authenticator,
});
}).toThrow(/rp id/i);
});
test('should not compare counters if both are 0', () => {
const verification = verifyAssertionResponse({
credential: assertionFirstTimeUsedResponse,
expectedChallenge: assertionFirstTimeUsedChallenge,
expectedOrigin: assertionFirstTimeUsedOrigin,
expectedRPID: 'dev.dontneeda.pw',
authenticator: authenticatorFirstTimeUsed,
});
expect(verification.verified).toEqual(true);
});
test('should throw an error if user verification is required but user was not verified', () => {
const actualData = parseAuthenticatorData.default(
base64url.toBuffer(assertionResponse.response.authenticatorData),
);
mockParseAuthData.mockReturnValue({
...actualData,
flags: {
up: true,
uv: false,
},
});
expect(() => {
verifyAssertionResponse({
credential: assertionResponse,
expectedChallenge: assertionChallenge,
expectedOrigin: assertionOrigin,
expectedRPID: 'dev.dontneeda.pw',
authenticator: authenticator,
fidoUserVerification: 'required',
});
}).toThrow(/user could not be verified/i);
});
// TODO: Get a real TPM assertion in here
test.skip('should verify TPM assertion', () => {
const expectedChallenge = 'dG90YWxseVVuaXF1ZVZhbHVlRXZlcnlBc3NlcnRpb24';
jest.spyOn(base64url, 'encode').mockReturnValueOnce(expectedChallenge);
const verification = verifyAssertionResponse({
credential: {
id: 'YJ8FMM-AmcUt73XPX341WXWd7ypBMylGjjhu0g3VzME',
rawId: 'YJ8FMM-AmcUt73XPX341WXWd7ypBMylGjjhu0g3VzME',
response: {
authenticatorData: 'PdxHEOnAiLIp26idVjIguzn3Ipr_RlsKZWsa-5qK-KAFAAAAAQ',
clientDataJSON:
'eyJ0eXBlIjoid2ViYXV0aG4uZ2V0IiwiY2hhbGxlbmdlIjoiZEc5MFlXeHNlVlZ1YVhGMVpWWmhiSFZsUlhabGNubEJjM05sY25ScGIyNCIsIm9yaWdpbiI6Imh0dHBzOi8vZGV2LmRvbnRuZWVkYS5wdyIsImNyb3NzT3JpZ2luIjpmYWxzZX0',
signature:
'T6nS6IDnfXmt_f2BEzIvw86RrHCpmf_OQIbiY-OBgk4jyKakYF34tnpdajQnIHTCa3-56RWDa_tZGQwZopEcrWRgSONKnMEboNhsw0aTYDo2q4fICD33qVFUuBIEcWJJyv1RqfW3uvPZAq1yvif81xPWYgF796fx7fFZzbBQARbUjNPudBuwgONljRbDstRhqnrP_b7h0-_CQ8EBJIR7Bor-R5I6JYsNWeR9r0wRPkpIhNRND-y6or6Shm2NXhr-ovLtnzpdouzlrJUJWnBJquWAjtiXKZsGfsY9Srh7jduoyKyPkwItPewcdlV30uUFCtPMepaJ5lUwbBtRE0NsXg',
userHandle: 'aW50ZXJuYWxVc2VySWQ',
},
type: 'public-key',
},
expectedChallenge,
expectedOrigin: assertionOrigin,
expectedRPID: 'dev.dontneeda.pw',
authenticator: {
publicKey: 'BAEAAQ',
credentialID: 'YJ8FMM-AmcUt73XPX341WXWd7ypBMylGjjhu0g3VzME',
counter: 0,
},
});
expect(verification.verified).toEqual(true);
});
/**
* Assertion examples below
*/
const assertionResponse = {
id: 'KEbWNCc7NgaYnUyrNeFGX9_3Y-8oJ3KwzjnaiD1d1LVTxR7v3CaKfCz2Vy_g_MHSh7yJ8yL0Pxg6jo_o0hYiew',
rawId: 'KEbWNCc7NgaYnUyrNeFGX9_3Y-8oJ3KwzjnaiD1d1LVTxR7v3CaKfCz2Vy_g_MHSh7yJ8yL0Pxg6jo_o0hYiew',
response: {
authenticatorData: 'PdxHEOnAiLIp26idVjIguzn3Ipr_RlsKZWsa-5qK-KABAAAAkA==',
clientDataJSON:
'eyJjaGFsbGVuZ2UiOiJkRzkwWVd4c2VWVnVhWEYxWlZaaGJIVmxSWFpsY25sVWFXMWwiLCJj' +
'bGllbnRFeHRlbnNpb25zIjp7fSwiaGFzaEFsZ29yaXRobSI6IlNIQS0yNTYiLCJvcmlnaW4iOiJodHRwczovL2Rldi5k' +
'b250bmVlZGEucHciLCJ0eXBlIjoid2ViYXV0aG4uZ2V0In0=',
signature:
'MEUCIQDYXBOpCWSWq2Ll4558GJKD2RoWg958lvJSB_GdeokxogIgWuEVQ7ee6AswQY0OsuQ6y8Ks6' +
'jhd45bDx92wjXKs900=',
},
getClientExtensionResults: () => ({}),
type: 'public-key',
};
const assertionChallenge = base64url.encode('totallyUniqueValueEveryTime');
const assertionOrigin = 'https://dev.dontneeda.pw';
const authenticator = {
publicKey:
'pQECAyYgASFYIIheFp-u6GvFT2LNGovf3ZrT0iFVBsA_76rRysxRG9A1Ilgg8WGeA6hPmnab0HAViUYVRkwTNcN77QBf_RR0dv3lIvQ',
credentialID:
'KEbWNCc7NgaYnUyrNeFGX9_3Y-8oJ3KwzjnaiD1d1LVTxR7v3CaKfCz2Vy_g_MHSh7yJ8yL0Pxg6jo_o0hYiew',
counter: 143,
};
/**
* Represented a device that's being used on the website for the first time
*/
const assertionFirstTimeUsedResponse = {
id: 'wSisR0_4hlzw3Y1tj4uNwwifIhRa-ZxWJwWbnfror0pVK9qPdBPO5pW3gasPqn6wXHb0LNhXB_IrA1nFoSQJ9A',
rawId: 'wSisR0_4hlzw3Y1tj4uNwwifIhRa-ZxWJwWbnfror0pVK9qPdBPO5pW3gasPqn6wXHb0LNhXB_IrA1nFoSQJ9A',
response: {
authenticatorData: 'PdxHEOnAiLIp26idVjIguzn3Ipr_RlsKZWsa-5qK-KABAAAAAA',
clientDataJSON:
'eyJjaGFsbGVuZ2UiOiJkRzkwWVd4c2VWVnVhWEYxWlZaaGJIVmxSWFpsY25sQmMzTmxjblJwYjI0IiwiY2xpZW50RXh0ZW5zaW9ucyI6e30sImhhc2hBbGdvcml0aG0iOiJTSEEtMjU2Iiwib3JpZ2luIjoiaHR0cHM6Ly9kZXYuZG9udG5lZWRhLnB3IiwidHlwZSI6IndlYmF1dGhuLmdldCJ9',
signature:
'MEQCIBu6M-DGzu1O8iocGHEj0UaAZm0HmxTeRIE6-nS3_CPjAiBDsmIzy5sacYwwzgpXqfwRt_2vl5yiQZ_OAqWJQBGVsQ',
},
type: 'public-key',
};
const assertionFirstTimeUsedChallenge = base64url.encode('totallyUniqueValueEveryAssertion');
const assertionFirstTimeUsedOrigin = 'https://dev.dontneeda.pw';
const authenticatorFirstTimeUsed = {
publicKey:
'pQECAyYgASFYIGmaxR4mBbukc2QhtW2ldhAAd555r-ljlGQN8MbcTnPPIlgg9CyUlE-0AB2fbzZbNgBvJuRa7r6o2jPphOmtyNPR_kY',
credentialID:
'wSisR0_4hlzw3Y1tj4uNwwifIhRa-ZxWJwWbnfror0pVK9qPdBPO5pW3gasPqn6wXHb0LNhXB_IrA1nFoSQJ9A',
counter: 0,
};
|
