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
|
local test_keys = require "spec.inputs.test_keys";
describe("util.crypto", function ()
local crypto = require "util.crypto";
local random = require "util.random";
local encodings = require "util.encodings";
describe("generate_ed25519_keypair", function ()
local keypair = crypto.generate_ed25519_keypair();
assert.is_not_nil(keypair);
assert.equal("ED25519", keypair:get_type());
end)
describe("generate_p256_keypair", function ()
local keypair = crypto.generate_p256_keypair();
assert.is_not_nil(keypair);
assert.equal("id-ecPublicKey", keypair:get_type());
end)
describe("export/import raw", function ()
local keypair = crypto.generate_p256_keypair();
assert.is_not_nil(keypair);
local raw = keypair:public_raw()
local imported = crypto.import_public_ec_raw(raw, "P-256")
assert.equal(keypair:public_pem(), imported:public_pem());
end)
describe("derive", function ()
local key = crypto.import_private_pem(test_keys.ecdsa_private_pem);
local peer_key = crypto.import_public_pem(test_keys.ecdsa_public_pem);
assert.equal("n1v4KeKmOVwjC67fiKtjJnqcEaasbpZa2fLPNHW51co=", encodings.base64.encode(key:derive(peer_key)))
end)
describe("import_private_pem", function ()
it("can import ECDSA keys", function ()
local ecdsa_key = crypto.import_private_pem(test_keys.ecdsa_private_pem);
assert.equal("id-ecPublicKey", ecdsa_key:get_type());
end);
it("can import EdDSA (Ed25519) keys", function ()
local ed25519_key = crypto.import_private_pem(crypto.generate_ed25519_keypair():private_pem());
assert.equal("ED25519", ed25519_key:get_type());
end);
it("can import RSA keys", function ()
-- TODO
end);
it("rejects invalid keys", function ()
assert.is_nil(crypto.import_private_pem(test_keys.eddsa_public_pem));
assert.is_nil(crypto.import_private_pem(test_keys.ecdsa_public_pem));
assert.is_nil(crypto.import_private_pem("foo"));
assert.is_nil(crypto.import_private_pem(""));
end);
end);
describe("import_public_pem", function ()
it("can import ECDSA public keys", function ()
local ecdsa_key = crypto.import_public_pem(test_keys.ecdsa_public_pem);
assert.equal("id-ecPublicKey", ecdsa_key:get_type());
end);
it("can import EdDSA (Ed25519) public keys", function ()
local ed25519_key = crypto.import_public_pem(test_keys.eddsa_public_pem);
assert.equal("ED25519", ed25519_key:get_type());
end);
it("can import RSA public keys", function ()
-- TODO
end);
end);
describe("PEM export", function ()
it("works", function ()
local ecdsa_key = crypto.import_public_pem(test_keys.ecdsa_public_pem);
assert.equal("id-ecPublicKey", ecdsa_key:get_type());
assert.equal(test_keys.ecdsa_public_pem, ecdsa_key:public_pem());
assert.has_error(function ()
-- Fails because private key is not available
ecdsa_key:private_pem();
end);
local ecdsa_private_key = crypto.import_private_pem(test_keys.ecdsa_private_pem);
assert.equal(test_keys.ecdsa_private_pem, ecdsa_private_key:private_pem());
end);
end);
describe("sign/verify with", function ()
local test_cases = {
ed25519 = {
crypto.ed25519_sign, crypto.ed25519_verify;
key = crypto.import_private_pem(test_keys.eddsa_private_pem);
sig_length = 64;
};
ecdsa = {
crypto.ecdsa_sha256_sign, crypto.ecdsa_sha256_verify;
key = crypto.import_private_pem(test_keys.ecdsa_private_pem);
};
};
for test_name, test in pairs(test_cases) do
local key = test.key;
describe(test_name, function ()
it("works", function ()
local sign, verify = test[1], test[2];
local sig = assert(sign(key, "Hello world"));
assert.is_string(sig);
if test.sig_length then
assert.equal(test.sig_length, #sig);
end
do
local ok = verify(key, "Hello world", sig);
assert.is_truthy(ok);
end
do -- Incorrect signature
local ok = verify(key, "Hello world", sig:sub(1, -2)..string.char((sig:byte(-1)+1)%255));
assert.is_falsy(ok);
end
do -- Incorrect message
local ok = verify(key, "Hello earth", sig);
assert.is_falsy(ok);
end
do -- Incorrect message (embedded NUL)
local ok = verify(key, "Hello world\0foo", sig);
assert.is_falsy(ok);
end
end);
end);
end
end);
describe("ECDSA signatures", function ()
local hex = require "util.hex";
local sig = hex.decode((([[
304402203e936e7b0bc62887e0e9d675afd08531a930384cfcf301
f25d13053a2ebf141d02205a5a7c7b7ac5878d004cb79b17b39346
6b0cd1043718ffc31c153b971d213a8e
]]):gsub("%s+", "")));
it("can be parsed", function ()
local r, s = crypto.parse_ecdsa_signature(sig, 32);
assert.is_string(r);
assert.is_string(s);
assert.equal(32, #r);
assert.equal(32, #s);
end);
it("fails to parse invalid signatures", function ()
local invalid_sigs = {
"";
"\000";
string.rep("\000", 64);
string.rep("\000", 72);
string.rep("\000", 256);
string.rep("\255", 72);
string.rep("\255", 3);
};
for _, invalid_sig in ipairs(invalid_sigs) do
local r, s = crypto.parse_ecdsa_signature(invalid_sig, 32);
assert.is_nil(r);
assert.is_nil(s);
end
end);
it("can be built", function ()
local r, s = crypto.parse_ecdsa_signature(sig, 32);
local rebuilt_sig = crypto.build_ecdsa_signature(r, s);
assert.equal(sig, rebuilt_sig);
end);
end);
describe("AES-GCM encryption", function ()
it("works", function ()
local message = "foo\0bar";
local key_128_bit = random.bytes(16);
local key_256_bit = random.bytes(32);
local test_cases = {
{ crypto.aes_128_gcm_encrypt, crypto.aes_128_gcm_decrypt, key = key_128_bit };
{ crypto.aes_256_gcm_encrypt, crypto.aes_256_gcm_decrypt, key = key_256_bit };
};
for _, params in pairs(test_cases) do
local iv = params.iv or random.bytes(12);
local encrypted = params[1](params.key, iv, message);
assert.not_equal(message, encrypted);
local decrypted = params[2](params.key, iv, encrypted);
assert.equal(message, decrypted);
end
end);
end);
describe("AES-CTR encryption", function ()
it("works", function ()
local message = "foo\0bar hello world";
local key_256_bit = random.bytes(32);
local test_cases = {
{ crypto.aes_256_ctr_decrypt, crypto.aes_256_ctr_decrypt, key = key_256_bit };
};
for _, params in pairs(test_cases) do
local iv = params.iv or random.bytes(16);
local encrypted = params[1](params.key, iv, message);
assert.not_equal(message, encrypted);
local decrypted = params[2](params.key, iv, encrypted);
assert.equal(message, decrypted);
end
end);
end);
end);
|
