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util.jwt: Add support for RSA-based algorithms (RS256, PS256)

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This commit is contained in:
Matthew Wild 2022-07-02 12:26:43 +01:00
parent d7b32f1b71
commit 0b0555c339
2 changed files with 205 additions and 14 deletions
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170
spec/util_jwt_spec.lua
View file

@ -8,6 +8,9 @@ describe("util.jwt", function ()
local ok, parsed = jwt.verify(key, token);
assert.truthy(ok)
assert.same({ payload = "this" }, parsed);
end);
it("rejects invalid", function ()
local key = "secret";
@ -17,6 +20,21 @@ describe("util.jwt", function ()
assert.falsy(ok)
end);
it("validates HS256", function ()
local verify = jwt.new_verifier("HS256", "your-256-bit-secret");
local result = {verify([[eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c]])};
assert.same({
true; -- success
{ -- payload
sub = "1234567890";
name = "John Doe";
iat = 1516239022;
};
}, result);
end);
it("validates ES256", function ()
local private_key = [[
-----BEGIN PRIVATE KEY-----
@ -66,5 +84,157 @@ q9UU8I5mEovUf86QZ7kOBIjJwqnzD1omageEHWwHdBO6B+dFabmdT9POxg==
}, result);
end);
it("validates RS256", function ()
local private_key = [[
-----BEGIN PRIVATE KEY-----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-----END PRIVATE KEY-----
]];
local sign = jwt.new_signer("RS256", private_key);
local token = sign({
sub = "1234567890";
name = "John Doe";
admin = true;
iat = 1516239022;
});
local public_key = [[
-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAu1SU1LfVLPHCozMxH2Mo
4lgOEePzNm0tRgeLezV6ffAt0gunVTLw7onLRnrq0/IzW7yWR7QkrmBL7jTKEn5u
+qKhbwKfBstIs+bMY2Zkp18gnTxKLxoS2tFczGkPLPgizskuemMghRniWaoLcyeh
kd3qqGElvW/VDL5AaWTg0nLVkjRo9z+40RQzuVaE8AkAFmxZzow3x+VJYKdjykkJ
0iT9wCS0DRTXu269V264Vf/3jvredZiKRkgwlL9xNAwxXFg0x/XFw005UWVRIkdg
cKWTjpBP2dPwVZ4WWC+9aGVd+Gyn1o0CLelf4rEjGoXbAAEgAqeGUxrcIlbjXfbc
mwIDAQAB
-----END PUBLIC KEY-----
]];
local verify = jwt.new_verifier("RS256", public_key);
local result = {verify(token)};
assert.same({
true; -- success
{ -- payload
sub = "1234567890";
name = "John Doe";
admin = true;
iat = 1516239022;
};
}, result);
local result = {verify[[eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiYWRtaW4iOnRydWUsImlhdCI6MTUxNjIzOTAyMn0.NHVaYe26MbtOYhSKkoKYdFVomg4i8ZJd8_-RU8VNbftc4TSMb4bXP3l3YlNWACwyXPGffz5aXHc6lty1Y2t4SWRqGteragsVdZufDn5BlnJl9pdR_kdVFUsra2rWKEofkZeIC4yWytE58sMIihvo9H1ScmmVwBcQP6XETqYd0aSHp1gOa9RdUPDvoXQ5oqygTqVtxaDr6wUFKrKItgBMzWIdNZ6y7O9E0DhEPTbE9rfBo6KTFsHAZnMg4k68CDp2woYIaXbmYTWcvbzIuHO7_37GT79XdIwkm95QJ7hYC9RiwrV7mesbY4PAahERJawntho0my942XheVLmGwLMBkQ]]};
assert.same({
true; -- success
{ -- payload
sub = "1234567890";
name = "John Doe";
admin = true;
iat = 1516239022;
};
}, result);
end);
it("validates PS256", function ()
local private_key = [[
-----BEGIN PRIVATE KEY-----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-----END PRIVATE KEY-----
]];
local sign = jwt.new_signer("PS256", private_key);
local token = sign({
sub = "1234567890";
name = "John Doe";
admin = true;
iat = 1516239022;
});
local public_key = [[
-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAu1SU1LfVLPHCozMxH2Mo
4lgOEePzNm0tRgeLezV6ffAt0gunVTLw7onLRnrq0/IzW7yWR7QkrmBL7jTKEn5u
+qKhbwKfBstIs+bMY2Zkp18gnTxKLxoS2tFczGkPLPgizskuemMghRniWaoLcyeh
kd3qqGElvW/VDL5AaWTg0nLVkjRo9z+40RQzuVaE8AkAFmxZzow3x+VJYKdjykkJ
0iT9wCS0DRTXu269V264Vf/3jvredZiKRkgwlL9xNAwxXFg0x/XFw005UWVRIkdg
cKWTjpBP2dPwVZ4WWC+9aGVd+Gyn1o0CLelf4rEjGoXbAAEgAqeGUxrcIlbjXfbc
mwIDAQAB
-----END PUBLIC KEY-----
]];
local verify = jwt.new_verifier("PS256", public_key);
local result = {verify(token)};
assert.same({
true; -- success
{ -- payload
sub = "1234567890";
name = "John Doe";
admin = true;
iat = 1516239022;
};
}, result);
local result = {verify[[eyJhbGciOiJQUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiYWRtaW4iOnRydWUsImlhdCI6MTUxNjIzOTAyMn0.iOeNU4dAFFeBwNj6qdhdvm-IvDQrTa6R22lQVJVuWJxorJfeQww5Nwsra0PjaOYhAMj9jNMO5YLmud8U7iQ5gJK2zYyepeSuXhfSi8yjFZfRiSkelqSkU19I-Ja8aQBDbqXf2SAWA8mHF8VS3F08rgEaLCyv98fLLH4vSvsJGf6ueZSLKDVXz24rZRXGWtYYk_OYYTVgR1cg0BLCsuCvqZvHleImJKiWmtS0-CymMO4MMjCy_FIl6I56NqLE9C87tUVpo1mT-kbg5cHDD8I7MjCW5Iii5dethB4Vid3mZ6emKjVYgXrtkOQ-JyGMh6fnQxEFN1ft33GX2eRHluK9eg]]};
assert.same({
true; -- success
{ -- payload
sub = "1234567890";
name = "John Doe";
admin = true;
iat = 1516239022;
};
}, result);
end);
end);

49
util/jwt.lua
View file

@ -66,8 +66,7 @@ local function new_hmac_algorithm(name, hmac)
return { sign = sign, verify = verify, load_key = load_key };
end
-- ES*** family
local function new_ecdsa_algorithm(name, c_sign, c_verify)
local function new_crypto_algorithm(name, key_type, c_sign, c_verify, sig_encode, sig_decode)
local static_header = new_static_header(name);
return {
@ -75,25 +74,27 @@ local function new_ecdsa_algorithm(name, c_sign, c_verify)
local encoded_payload = json.encode(payload);
local signed = static_header .. b64url(encoded_payload);
local der_sig = c_sign(private_key, signed);
local signature = c_sign(private_key, signed);
if sig_encode then
signature = sig_encode(signature);
end
local r, s = crypto.parse_ecdsa_signature(der_sig);
return signed.."."..b64url(r..s);
return signed.."."..b64url(signature);
end;
verify = function (public_key, blob)
verify = function (public_key, blob)
local signed, signature, raw_payload = decode_jwt(blob, name);
if not signed then return nil, signature; end -- nil, err
local raw_signature = unb64url(signature);
local der_sig = crypto.build_ecdsa_signature(raw_signature:sub(1, 32), raw_signature:sub(33, 64));
if not der_sig then
signature = unb64url(signature);
if sig_decode and signature then
signature = sig_decode(signature);
end
if not signature then
return false, "signature-mismatch";
end
local verify_ok = c_verify(public_key, signed, der_sig);
local verify_ok = c_verify(public_key, signed, signature);
if not verify_ok then
return false, "signature-mismatch";
end
@ -108,21 +109,41 @@ local function new_ecdsa_algorithm(name, c_sign, c_verify)
load_public_key = function (public_key_pem)
local key = assert(crypto.import_public_pem(public_key_pem));
assert(key:get_type() == "id-ecPublicKey", "incorrect key type");
assert(key:get_type() == key_type, "incorrect key type");
return key;
end;
load_private_key = function (private_key_pem)
local key = assert(crypto.import_private_pem(private_key_pem));
assert(key:get_type() == "id-ecPublicKey", "incorrect key type");
assert(key:get_type() == key_type, "incorrect key type");
return key;
end;
};
end
-- RS***, PS***
local function new_rsa_algorithm(name, c_sign, c_verify)
return new_crypto_algorithm(name, "rsaEncryption", c_sign, c_verify);
end
-- ES***
local function new_ecdsa_algorithm(name, c_sign, c_verify)
local function encode_ecdsa_sig(der_sig)
local r, s = crypto.parse_ecdsa_signature(der_sig);
return r..s;
end
local function decode_ecdsa_sig(jwk_sig)
return crypto.build_ecdsa_signature(jwk_sig:sub(1, 32), jwk_sig:sub(33, 64));
end
return new_crypto_algorithm(name, "id-ecPublicKey", c_sign, c_verify, encode_ecdsa_sig, decode_ecdsa_sig);
end
local algorithms = {
HS256 = new_hmac_algorithm("HS256", hashes.hmac_sha256);
ES256 = new_ecdsa_algorithm("ES256", crypto.ecdsa_sha256_sign, crypto.ecdsa_sha256_verify);
RS256 = new_rsa_algorithm("RS256", crypto.rsassa_pkcs1_256_sign, crypto.rsassa_pkcs1_256_verify);
PS256 = new_rsa_algorithm("PS256", crypto.rsassa_pss_256_sign, crypto.rsassa_pss_256_verify);
};
local function new_signer(algorithm, key_input)