diff options
Diffstat (limited to 'spec/util_crypto_spec.lua')
| -rw-r--r-- | spec/util_crypto_spec.lua | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/spec/util_crypto_spec.lua b/spec/util_crypto_spec.lua new file mode 100644 index 00000000..77d046ac --- /dev/null +++ b/spec/util_crypto_spec.lua @@ -0,0 +1,184 @@ +local test_keys = require "spec.inputs.test_keys"; + +describe("util.crypto", function () + local crypto = require "util.crypto"; + local random = require "util.random"; + + describe("generate_ed25519_keypair", function () + local keypair = crypto.generate_ed25519_keypair(); + assert.is_not_nil(keypair); + assert.equal("ED25519", keypair:get_type()); + 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); |