irmago_test.go 8.17 KB
Newer Older
Sietse Ringers's avatar
Sietse Ringers committed
1
package irmago
2
3

import (
4
5
	"fmt"
	"math/big"
Sietse Ringers's avatar
Sietse Ringers committed
6
	"os"
7
8
	"testing"
	"time"
Sietse Ringers's avatar
Sietse Ringers committed
9

10
11
	"encoding/json"

12
	"github.com/stretchr/testify/assert"
Sietse Ringers's avatar
Sietse Ringers committed
13
	"github.com/stretchr/testify/require"
14
15
)

Sietse Ringers's avatar
Sietse Ringers committed
16
func TestMain(m *testing.M) {
Sietse Ringers's avatar
Sietse Ringers committed
17
18
	retCode := m.Run()

Sietse Ringers's avatar
Sietse Ringers committed
19
20
	err := os.RemoveAll("testdata/storage/test")
	if err != nil {
Sietse Ringers's avatar
Sietse Ringers committed
21
		fmt.Println("Could not delete test storage")
Sietse Ringers's avatar
Sietse Ringers committed
22
23
24
		os.Exit(1)
	}

Sietse Ringers's avatar
Sietse Ringers committed
25
26
	os.Exit(retCode)
}
Sietse Ringers's avatar
Sietse Ringers committed
27

Sietse Ringers's avatar
Sietse Ringers committed
28
29
30
31
32
func parseMetaStore(t *testing.T) {
	require.NoError(t, MetaStore.ParseFolder("testdata/irma_configuration"), "MetaStore.ParseFolder() failed")
}

func parseStorage(t *testing.T) {
33
	exists, err := PathExists("testdata/storage/test")
Sietse Ringers's avatar
Sietse Ringers committed
34
35
36
	require.NoError(t, err, "pathexists() failed")
	if !exists {
		require.NoError(t, os.Mkdir("testdata/storage/test", 0755), "Could not create test storage")
Sietse Ringers's avatar
Sietse Ringers committed
37
	}
Sietse Ringers's avatar
Sietse Ringers committed
38
	require.NoError(t, Manager.Init("testdata/storage/test"), "Manager.Init() failed")
39

Sietse Ringers's avatar
Sietse Ringers committed
40
41
42
43
44
}

func teardown(t *testing.T) {
	MetaStore = newConfigurationStore()
	Manager = newCredentialManager()
45
	assert.NoError(t, os.RemoveAll("testdata/storage/test"))
Sietse Ringers's avatar
Sietse Ringers committed
46
47
}

48
49
50
51
52
53
54
// A convenience function for initializing big integers from known correct (10
// base) strings. Use with care, errors are ignored.
func s2big(s string) (r *big.Int) {
	r, _ = new(big.Int).SetString(s, 10)
	return
}

Sietse Ringers's avatar
Sietse Ringers committed
55
func parseAndroidStorage(t *testing.T) {
56
	assert.NoError(t, Manager.ParseAndroidStorage(), "ParseAndroidStorage() failed")
Sietse Ringers's avatar
Sietse Ringers committed
57
58
59
}

func verifyStoreIsUnmarshaled(t *testing.T) {
Sietse Ringers's avatar
Sietse Ringers committed
60
	cred, err := Manager.credential(NewCredentialTypeIdentifier("irma-demo.RU.studentCard"), 0)
61
62
63
	assert.NoError(t, err, "could not fetch credential")
	assert.NotNil(t, cred, "Credential should exist")
	assert.NotNil(t, cred.Attributes[0], "Metadata attribute of irma-demo.RU.studentCard should not be nil")
64

65
	assert.True(t,
Sietse Ringers's avatar
Sietse Ringers committed
66
		cred.Signature.Verify(cred.PublicKey(), cred.Attributes),
67
68
69
		"Credential should be valid",
	)
}
Sietse Ringers's avatar
Sietse Ringers committed
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
func verifyPaillierKey(t *testing.T, PrivateKey *paillierPrivateKey) {
	require.NotNil(t, PrivateKey)
	require.NotNil(t, PrivateKey.L)
	require.NotNil(t, PrivateKey.U)
	require.NotNil(t, PrivateKey.PublicKey.N)

	require.Equal(t, big.NewInt(1), new(big.Int).Exp(big.NewInt(2), PrivateKey.L, PrivateKey.N))
	require.Equal(t, PrivateKey.NSquared, new(big.Int).Exp(PrivateKey.N, big.NewInt(2), nil))

	plaintext := "Hello Paillier!"
	ciphertext, err := PrivateKey.Encrypt([]byte(plaintext))
	require.NoError(t, err)
	decrypted, err := PrivateKey.Decrypt(ciphertext)
	require.NoError(t, err)
	require.Equal(t, plaintext, string(decrypted))
}

func verifyKeyshareIsUnmarshaled(t *testing.T) {
	require.NotNil(t, Manager.paillierKeyCache)
	require.NotNil(t, Manager.keyshareServers)
	test := NewSchemeManagerIdentifier("test")
	require.Contains(t, Manager.keyshareServers, test)
	kss := Manager.keyshareServers[test]
	require.NotEmpty(t, kss.Nonce)

	verifyPaillierKey(t, kss.PrivateKey)
	verifyPaillierKey(t, Manager.paillierKeyCache)
}

Sietse Ringers's avatar
Sietse Ringers committed
100
func TestAndroidParse(t *testing.T) {
Sietse Ringers's avatar
Sietse Ringers committed
101
102
	parseMetaStore(t)
	parseStorage(t)
Sietse Ringers's avatar
Sietse Ringers committed
103
104
	parseAndroidStorage(t)
	verifyStoreIsUnmarshaled(t)
105
	verifyKeyshareIsUnmarshaled(t)
Sietse Ringers's avatar
Sietse Ringers committed
106
107

	teardown(t)
Sietse Ringers's avatar
Sietse Ringers committed
108
109
110
}

func TestUnmarshaling(t *testing.T) {
Sietse Ringers's avatar
Sietse Ringers committed
111
112
	parseMetaStore(t)
	parseStorage(t)
Sietse Ringers's avatar
Sietse Ringers committed
113
114
115
	parseAndroidStorage(t)

	Manager = newCredentialManager()
116
117
	err := Manager.Init("testdata/storage/test")
	require.NoError(t, err)
Sietse Ringers's avatar
Sietse Ringers committed
118
119

	verifyStoreIsUnmarshaled(t)
120
	verifyKeyshareIsUnmarshaled(t)
Sietse Ringers's avatar
Sietse Ringers committed
121
122

	teardown(t)
Sietse Ringers's avatar
Sietse Ringers committed
123
}
124
125

func TestParseStore(t *testing.T) {
Sietse Ringers's avatar
Sietse Ringers committed
126
	parseMetaStore(t)
127

128
129
	assert.NotNil(t, MetaStore.Issuers[NewIssuerIdentifier("irma-demo.RU")].CurrentPublicKey().N, "irma-demo.RU public key has no modulus")
	assert.Equal(t,
130
		"Irma Demo",
131
		MetaStore.SchemeManagers[NewSchemeManagerIdentifier("irma-demo")].Name.Translation("en"),
132
		"irma-demo scheme manager has unexpected name")
133
	assert.Equal(t,
134
		"Radboud Universiteit Nijmegen",
135
		MetaStore.Issuers[NewIssuerIdentifier("irma-demo.RU")].Name.Translation("en"),
136
		"irma-demo.RU issuer has unexpected name")
137
	assert.Equal(t,
138
		"Student Card",
139
		MetaStore.Credentials[NewCredentialTypeIdentifier("irma-demo.RU.studentCard")].ShortName.Translation("en"),
140
141
		"irma-demo.RU.studentCard has unexpected name")

142
	assert.Equal(t,
143
		"studentID",
144
		MetaStore.Credentials[NewCredentialTypeIdentifier("irma-demo.RU.studentCard")].Attributes[2].ID,
145
146
147
148
		"irma-demo.RU.studentCard.studentID has unexpected name")

	// Hash algorithm pseudocode:
	// Base64(SHA256("irma-demo.RU.studentCard")[0:16])
149
	assert.Contains(t, MetaStore.reverseHashes, "1stqlPad5edpfS1Na1U+DA==",
150
		"irma-demo.RU.studentCard had improper hash")
151
	assert.Contains(t, MetaStore.reverseHashes, "CLjnADMBYlFcuGOT7Z0xRg==",
152
		"irma-demo.MijnOverheid.root had improper hash")
Sietse Ringers's avatar
Sietse Ringers committed
153
154

	teardown(t)
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
}

func TestMetadataAttribute(t *testing.T) {
	metadata := NewMetadataAttribute()
	if metadata.Version() != 0x02 {
		t.Errorf("Unexpected metadata version: %d", metadata.Version())
	}

	expiry := metadata.SigningDate().Unix() + int64(metadata.ValidityDuration()*ExpiryFactor)
	if !time.Unix(expiry, 0).Equal(metadata.Expiry()) {
		t.Errorf("Invalid signing date")
	}

	if metadata.KeyCounter() != 0 {
		t.Errorf("Unexpected key counter")
	}
}

func TestMetadataCompatibility(t *testing.T) {
Sietse Ringers's avatar
Sietse Ringers committed
174
	parseMetaStore(t)
175
176
177

	// An actual metadata attribute of an IRMA credential extracted from the IRMA app
	attr := MetadataFromInt(s2big("49043481832371145193140299771658227036446546573739245068"))
178
	assert.NotNil(t, attr.CredentialType(), "attr.CredentialType() should not be nil")
179

180
	assert.Equal(t,
181
		NewCredentialTypeIdentifier("irma-demo.RU.studentCard"),
182
183
184
		attr.CredentialType().Identifier(),
		"Metadata credential type was not irma-demo.RU.studentCard",
	)
185
186
187
188
	assert.Equal(t, byte(0x02), attr.Version(), "Unexpected metadata version")
	assert.Equal(t, time.Unix(1499904000, 0), attr.SigningDate(), "Unexpected signing date")
	assert.Equal(t, time.Unix(1516233600, 0), attr.Expiry(), "Unexpected expiry date")
	assert.Equal(t, 2, attr.KeyCounter(), "Unexpected key counter")
Sietse Ringers's avatar
Sietse Ringers committed
189
190

	teardown(t)
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

func TestAttributeDisjunctionMarshaling(t *testing.T) {
	disjunction := AttributeDisjunction{}

	var _ json.Unmarshaler = &disjunction
	var _ json.Marshaler = &disjunction

	id := NewAttributeTypeIdentifier("MijnOverheid.ageLower.over18")

	attrsjson := `
	{
		"label": "Over 18",
		"attributes": {
			"MijnOverheid.ageLower.over18": "yes",
			"Thalia.age.over18": "Yes"
		}
	}`
	require.NoError(t, json.Unmarshal([]byte(attrsjson), &disjunction))
	require.True(t, disjunction.HasValues())
	require.Contains(t, disjunction.Attributes, id)
	require.Contains(t, disjunction.Values, id)
	require.Equal(t, disjunction.Values[id], "yes")

	disjunction = AttributeDisjunction{}
	attrsjson = `
	{
		"label": "Over 18",
		"attributes": [
			"MijnOverheid.ageLower.over18",
			"Thalia.age.over18"
		]
	}`
	require.NoError(t, json.Unmarshal([]byte(attrsjson), &disjunction))
	require.False(t, disjunction.HasValues())
	require.Contains(t, disjunction.Attributes, id)

	require.True(t, disjunction.MatchesStore())

	require.False(t, disjunction.Satisfied())
	disjunction.selected = &disjunction.Attributes[0]
	require.True(t, disjunction.Satisfied())
}
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
265
266
267
268
269

func TestCandidates(t *testing.T) {
	parseMetaStore(t)
	parseStorage(t)
	parseAndroidStorage(t)

	attrtype := NewAttributeTypeIdentifier("irma-demo.RU.studentCard.studentID")
	disjunction := &AttributeDisjunction{
		Attributes: []AttributeTypeIdentifier{attrtype},
	}
	attrs := Manager.Candidates(disjunction)
	require.NotNil(t, attrs)
	require.Len(t, attrs, 1)

	attr := attrs[0]
	require.NotNil(t, attr)
	require.Equal(t, attr.Type, attrtype)

	disjunction = &AttributeDisjunction{
		Attributes: []AttributeTypeIdentifier{attrtype},
		Values:     map[AttributeTypeIdentifier]string{attrtype: "s1234567"},
	}
	attrs = Manager.Candidates(disjunction)
	require.NotNil(t, attrs)
	require.Len(t, attrs, 1)

	disjunction = &AttributeDisjunction{
		Attributes: []AttributeTypeIdentifier{attrtype},
		Values:     map[AttributeTypeIdentifier]string{attrtype: "foobarbaz"},
	}
	attrs = Manager.Candidates(disjunction)
	require.NotNil(t, attrs)
	require.Empty(t, attrs)

	teardown(t)
}
270
271

func TestTimestamp(t *testing.T) {
272
273
	mytime := Timestamp(time.Unix(1500000000, 0))
	timestruct := struct{ Time *Timestamp }{Time: &mytime}
274
275
276
	bytes, err := json.Marshal(timestruct)
	require.NoError(t, err)

277
	timestruct = struct{ Time *Timestamp }{}
278
279
280
	require.NoError(t, json.Unmarshal(bytes, &timestruct))
	require.Equal(t, time.Time(*timestruct.Time).Unix(), int64(1500000000))
}