author | Matthew Wild <mwild1@gmail.com> |
Fri, 24 Jun 2022 16:56:16 +0100 | |
changeset 12697 | 7c5afbdcbc77 |
child 12704 | 899c057781cd |
permissions | -rw-r--r-- |
12697
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util.crypto: New wrapper for some operations in OpenSSL's libcrypto
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local test_keys = { |
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ecdsa_private_pem = [[ |
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-----BEGIN PRIVATE KEY----- |
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4 |
MIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQg7taVK6bPtPz4ah32 |
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5 |
aD9CfvOah5omBxRVtzypwQXvZeahRANCAAQpKFeNIy27+lVo6bJslO6r2ty5rlb5 |
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6 |
xEiCx8GrrbJ8S7b5IPZCS7OrBaO2iqgOf7NMsgO12eLCfMZRnA+gCC34 |
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-----END PRIVATE KEY----- |
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]]; |
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|
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ecdsa_public_pem = [[ |
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-----BEGIN PUBLIC KEY----- |
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MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEKShXjSMtu/pVaOmybJTuq9rcua5W |
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+cRIgsfBq62yfEu2+SD2QkuzqwWjtoqoDn+zTLIDtdniwnzGUZwPoAgt+A== |
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-----END PUBLIC KEY----- |
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]]; |
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|
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eddsa_private_pem = [[ |
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-----BEGIN PRIVATE KEY----- |
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MC4CAQAwBQYDK2VwBCIEIOmrajEfnqdzdJzkJ4irQMCGbYRqrl0RlwPHIw+a5b7M |
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-----END PRIVATE KEY----- |
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]]; |
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|
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eddsa_public_pem = [[ |
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-----BEGIN PUBLIC KEY----- |
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MCowBQYDK2VwAyEAFipbSXeGvPVK7eA4+hIOdutZTUUyXswVSbMGi0j1QKE= |
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-----END PUBLIC KEY----- |
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]]; |
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|
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}; |
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|
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describe("util.crypto", function () |
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local crypto = require "util.crypto"; |
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local random = require "util.random"; |
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describe("generate_ed25519_keypair", function () |
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local keypair = crypto.generate_ed25519_keypair(); |
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assert.is_not_nil(keypair); |
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assert.equal("ED25519", keypair:get_type()); |
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end) |
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|
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describe("import_private_pem", function () |
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it("can import ECDSA keys", function () |
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local ecdsa_key = crypto.import_private_pem(test_keys.ecdsa_private_pem); |
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assert.equal("id-ecPublicKey", ecdsa_key:get_type()); |
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end); |
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|
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it("can import EdDSA (Ed25519) keys", function () |
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local ed25519_key = crypto.import_private_pem(crypto.generate_ed25519_keypair():private_pem()); |
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assert.equal("ED25519", ed25519_key:get_type()); |
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end); |
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|
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it("can import RSA keys", function () |
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-- TODO |
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end); |
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|
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it("rejects invalid keys", function () |
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assert.is_nil(crypto.import_private_pem(test_keys.eddsa_public_pem)); |
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assert.is_nil(crypto.import_private_pem(test_keys.ecdsa_public_pem)); |
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assert.is_nil(crypto.import_private_pem("foo")); |
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assert.is_nil(crypto.import_private_pem("")); |
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end); |
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end); |
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describe("import_public_pem", function () |
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it("can import ECDSA public keys", function () |
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local ecdsa_key = crypto.import_public_pem(test_keys.ecdsa_public_pem); |
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assert.equal("id-ecPublicKey", ecdsa_key:get_type()); |
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end); |
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it("can import EdDSA (Ed25519) public keys", function () |
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local ed25519_key = crypto.import_public_pem(test_keys.eddsa_public_pem); |
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assert.equal("ED25519", ed25519_key:get_type()); |
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end); |
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|
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it("can import RSA public keys", function () |
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-- TODO |
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end); |
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end); |
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|
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describe("PEM export", function () |
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it("works", function () |
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local ecdsa_key = crypto.import_public_pem(test_keys.ecdsa_public_pem); |
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assert.equal("id-ecPublicKey", ecdsa_key:get_type()); |
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assert.equal(test_keys.ecdsa_public_pem, ecdsa_key:public_pem()); |
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|
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assert.has_error(function () |
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-- Fails because private key is not available |
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ecdsa_key:private_pem(); |
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end); |
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local ecdsa_private_key = crypto.import_private_pem(test_keys.ecdsa_private_pem); |
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assert.equal(test_keys.ecdsa_private_pem, ecdsa_private_key:private_pem()); |
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end); |
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end); |
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|
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describe("sign/verify with", function () |
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local test_cases = { |
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ed25519 = { |
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crypto.ed25519_sign, crypto.ed25519_verify; |
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key = crypto.import_private_pem(test_keys.eddsa_private_pem); |
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sig_length = 64; |
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}; |
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ecdsa = { |
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crypto.ecdsa_sha256_sign, crypto.ecdsa_sha256_verify; |
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key = crypto.import_private_pem(test_keys.ecdsa_private_pem); |
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}; |
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}; |
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for test_name, test in pairs(test_cases) do |
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local key = test.key; |
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describe(test_name, function () |
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it("works", function () |
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local sign, verify = test[1], test[2]; |
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local sig = assert(sign(key, "Hello world")); |
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assert.is_string(sig); |
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if test.sig_length then |
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assert.equal(test.sig_length, #sig); |
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117 |
end |
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118 |
|
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119 |
do |
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120 |
local ok = verify(key, "Hello world", sig); |
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121 |
assert.is_truthy(ok); |
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122 |
end |
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123 |
do -- Incorrect signature |
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124 |
local ok = verify(key, "Hello world", sig:sub(1, -2)..string.char((sig:byte(-1)+1)%255)); |
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125 |
assert.is_falsy(ok); |
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126 |
end |
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127 |
do -- Incorrect message |
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128 |
local ok = verify(key, "Hello earth", sig); |
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129 |
assert.is_falsy(ok); |
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130 |
end |
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131 |
do -- Incorrect message (embedded NUL) |
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132 |
local ok = verify(key, "Hello world\0foo", sig); |
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133 |
assert.is_falsy(ok); |
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134 |
end |
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135 |
end); |
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136 |
end); |
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137 |
end |
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138 |
end); |
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139 |
|
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140 |
describe("ECDSA signatures", function () |
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141 |
local hex = require "util.hex"; |
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142 |
local sig = hex.decode((([[ |
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143 |
304402203e936e7b0bc62887e0e9d675afd08531a930384cfcf301 |
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144 |
f25d13053a2ebf141d02205a5a7c7b7ac5878d004cb79b17b39346 |
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145 |
6b0cd1043718ffc31c153b971d213a8e |
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146 |
]]):gsub("%s+", ""))); |
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147 |
it("can be parsed", function () |
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148 |
local r, s = crypto.parse_ecdsa_signature(sig); |
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149 |
assert.is_string(r); |
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150 |
assert.is_string(s); |
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151 |
assert.equal(32, #r); |
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152 |
assert.equal(32, #s); |
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153 |
end); |
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|
154 |
it("fails to parse invalid signatures", function () |
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|
155 |
local invalid_sigs = { |
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156 |
""; |
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157 |
"\000"; |
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|
158 |
string.rep("\000", 64); |
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|
159 |
string.rep("\000", 72); |
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|
160 |
string.rep("\000", 256); |
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|
161 |
string.rep("\255", 72); |
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162 |
string.rep("\255", 3); |
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|
163 |
}; |
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|
164 |
for _, sig in ipairs(invalid_sigs) do |
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165 |
local r, s = crypto.parse_ecdsa_signature(""); |
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|
166 |
assert.is_nil(r); |
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|
167 |
assert.is_nil(s); |
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|
168 |
end |
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|
169 |
|
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170 |
end); |
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|
171 |
it("can be built", function () |
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|
172 |
local r, s = crypto.parse_ecdsa_signature(sig); |
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173 |
local rebuilt_sig = crypto.build_ecdsa_signature(r, s); |
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174 |
assert.equal(sig, rebuilt_sig); |
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175 |
end); |
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|
176 |
end); |
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|
177 |
|
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|
178 |
describe("AES-GCM encryption", function () |
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179 |
it("works", function () |
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180 |
local message = "foo\0bar"; |
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|
181 |
local key_128_bit = random.bytes(16); |
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|
182 |
local key_256_bit = random.bytes(32); |
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|
183 |
local test_cases = { |
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|
184 |
{ crypto.aes_128_gcm_encrypt, crypto.aes_128_gcm_decrypt, key = key_128_bit }; |
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|
185 |
{ crypto.aes_256_gcm_encrypt, crypto.aes_256_gcm_decrypt, key = key_256_bit }; |
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|
186 |
}; |
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|
187 |
for _, params in pairs(test_cases) do |
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|
188 |
local iv = params.iv or random.bytes(12); |
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|
189 |
local encrypted = params[1](params.key, iv, message); |
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|
190 |
assert.not_equal(message, encrypted); |
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|
191 |
local decrypted = params[2](params.key, iv, encrypted); |
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|
192 |
assert.equal(message, decrypted); |
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|
193 |
end |
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Matthew Wild <mwild1@gmail.com>
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|
194 |
end); |
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Matthew Wild <mwild1@gmail.com>
parents:
diff
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|
195 |
end); |
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|
196 |
end); |