michaelkuc6/U2FDevice
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Cleaned up messages.

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This commit is contained in:
Michael Kuc
2018-08-10 12:00:03 +00:00
parent 48840ad36c
commit 5d1d0ccb63
10 changed files with 16 additions and 58 deletions
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1
Channel.cpp
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@@ -27,7 +27,6 @@ void Channel::handle(const shared_ptr<U2FMessage> uMsg)
else if (this->lockedState != ChannelLockedState::Unlocked)
throw runtime_error{ "Channel in incorrect (locked) state to handle request" };
clog << "Handling uMsg with CMD: " << static_cast<uint32_t>(uMsg->cmd) << endl;
return U2F_CMD::get(uMsg)->respond(this->cid);
}

2
Controller.cpp
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@@ -18,8 +18,6 @@ void Controller::handleTransaction()
auto opChannel = msg->cid;
clog << "Got msg with cmd of: " << static_cast<uint16_t>(msg->cmd) << endl;
if (msg->cmd == U2FHID_INIT)
{
opChannel = nextChannel();

4
Packet.cpp
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@@ -90,7 +90,6 @@ shared_ptr<InitPacket> InitPacket::getPacket(const uint32_t rCID, const uint8_t
"\t\t</table>"
"\t\t<br />");
clog << "Fully read init packet" << endl;
bytesRead = 0;
return p;
}
@@ -143,7 +142,6 @@ shared_ptr<ContPacket> ContPacket::getPacket(const uint32_t rCID, const uint8_t
"\t\t</table>\n"
"\t\t<br />");
//clog << "Fully read cont packet" << endl;
readBytes = 0;
return p;
}
@@ -183,7 +181,6 @@ shared_ptr<Packet> Packet::getPacket()
if (b & TYPE_MASK)
{
//Init packet
//clog << "Getting init packet" << endl;
packet = InitPacket::getPacket(cid, b);
if (packet)
@@ -194,7 +191,6 @@ shared_ptr<Packet> Packet::getPacket()
else
{
//Cont packet
//clog << "Getting cont packet" << endl;
packet = ContPacket::getPacket(cid, b);
if (packet)

7
Storage.cpp
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@@ -50,13 +50,6 @@ void Storage::init(const string &dirPrefix)
Storage::PubKey pubKey{};
b64decode(pubStr, pubKey);
clog << "Loaded key with pubkey: " << hex;
for (auto b : pubKey)
clog << static_cast<uint32_t>(b) << ' ';
clog << dec << endl;
Storage::appParams[keyH] = appParam;
Storage::privKeys[keyH] = privKey;
Storage::pubKeys[keyH] = pubKey;

4
U2FMessage.cpp
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@@ -85,8 +85,6 @@ shared_ptr<U2FMessage> U2FMessage::readNonBlock()
message->data.assign(dataBytes.begin(), dataBytes.end());
currSeq = -1u;
std::clog << "Read all of message" << std::endl;
return message;
}
@@ -128,8 +126,6 @@ void U2FMessage::write()
bytesWritten += newByteCount;
}
//auto stream = *getHostStream();
if (cmd == U2FHID_MSG)
{
auto dAS = getDevAPDUStream().get();

6
U2F_Authenticate_APDU.cpp
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@@ -23,8 +23,6 @@ U2F_Authenticate_APDU::U2F_Authenticate_APDU(const U2F_Msg_CMD &msg, const vecto
uint8_t keyHLen = data[64];
copy(data.begin() + 65, data.begin() + 65 + keyHLen, back_inserter(keyH));
clog << "Got U2F_Auth request" << endl;
}
void U2F_Authenticate_APDU::respond(const uint32_t channelID) const
@@ -39,7 +37,7 @@ void U2F_Authenticate_APDU::respond(const uint32_t channelID) const
if (keyH.size() != sizeof(Storage::KeyHandle))
{
//Respond with error code - key handle is of wrong size
clog << "Invalid key handle length" << endl;
cerr << "Invalid key handle length" << endl;
statusCode = APDU_STATUS::SW_WRONG_DATA;
response.insert(response.end(), FIELD_BE(statusCode));
msg.write();
@@ -51,7 +49,7 @@ void U2F_Authenticate_APDU::respond(const uint32_t channelID) const
if (Storage::appParams.find(keyHB) == Storage::appParams.end())
{
//Respond with error code - key handle doesn't exist in storage
clog << "Invalid key handle" << endl;
cerr << "Invalid key handle" << endl;
statusCode = APDU_STATUS::SW_WRONG_DATA;
response.insert(response.end(), FIELD_BE(statusCode));
msg.write();

30
U2F_Msg_CMD.cpp
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@@ -17,9 +17,7 @@ uint32_t U2F_Msg_CMD::getLe(const uint32_t byteCount, vector<uint8_t> bytes)
if (byteCount != 0)
{
//Le must be length of data in bytes
clog << "Le must be length of data in bytes" << endl;
clog << "Le has a size of " << byteCount << " bytes" << endl;
switch (byteCount)
{
case 1:
@@ -59,14 +57,10 @@ shared_ptr<U2F_Msg_CMD> U2F_Msg_CMD::generate(const shared_ptr<U2FMessage> uMsg)
cmd.p1 = dat[2];
cmd.p2 = dat[3];
clog << "Loaded U2F_Msg_CMD parameters" << endl;
vector<uint8_t> data{ dat.begin() + 4, dat.end() };
const uint32_t cBCount = data.size();
auto startPtr = data.begin(), endPtr = data.end();
clog << "Loaded iters" << endl;
if (usesData.at(cmd.ins) || data.size() > 3)
{
if (cBCount == 0)
@@ -85,7 +79,6 @@ shared_ptr<U2F_Msg_CMD> U2F_Msg_CMD::generate(const shared_ptr<U2FMessage> uMsg)
endPtr = startPtr + cmd.lc;
clog << "Getting Le" << endl;
cmd.le = getLe(data.end() - endPtr, vector<uint8_t>(endPtr, data.end()));
}
else
@@ -93,14 +86,11 @@ shared_ptr<U2F_Msg_CMD> U2F_Msg_CMD::generate(const shared_ptr<U2FMessage> uMsg)
cmd.lc = 0;
endPtr = startPtr;
clog << "Getting Le" << endl;
cmd.le = getLe(cBCount, data);
}
const auto dBytes = vector<uint8_t>(startPtr, endPtr);
clog << "Determined message format" << endl;
auto hAS = getHostAPDUStream().get();
fprintf(hAS, "<table>\n"
@@ -134,8 +124,6 @@ shared_ptr<U2F_Msg_CMD> U2F_Msg_CMD::generate(const shared_ptr<U2FMessage> uMsg)
"\t\t</table>\n"
"\t\t<br />", cmd.le);
clog << "Constructing message specialisation" << endl;
switch (cmd.ins)
{
case APDU::U2F_REG:
@@ -149,6 +137,15 @@ shared_ptr<U2F_Msg_CMD> U2F_Msg_CMD::generate(const shared_ptr<U2FMessage> uMsg)
}
}
void U2F_Msg_CMD::error(const uint32_t channelID, const uint16_t errCode)
{
U2FMessage msg{};
msg.cid = channelID;
msg.cmd = U2FHID_MSG;
msg.data.insert(msg.data.end(), FIELD_BE(errCode));
msg.write();
}
const map<uint8_t, bool> U2F_Msg_CMD::usesData = {
{ U2F_REG, true },
{ U2F_AUTH, true },
@@ -157,10 +154,5 @@ const map<uint8_t, bool> U2F_Msg_CMD::usesData = {
void U2F_Msg_CMD::respond(const uint32_t channelID) const
{
U2FMessage msg{};
msg.cid = channelID;
msg.cmd = U2FHID_MSG;
auto errorCode = APDU_STATUS::SW_INS_NOT_SUPPORTED;
msg.data.insert(msg.data.end(), FIELD_BE(errorCode));
msg.write();
U2F_Msg_CMD::error(channelID, static_cast<uint16_t>(APDU_STATUS::SW_INS_NOT_SUPPORTED));
}

1
U2F_Msg_CMD.hpp
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@@ -22,6 +22,7 @@ struct U2F_Msg_CMD : U2F_CMD
public:
static std::shared_ptr<U2F_Msg_CMD> generate(const std::shared_ptr<U2FMessage> uMsg);
static void error(const uint32_t channelID, const uint16_t errCode);
void respond(const uint32_t channelID) const;
};

17
U2F_Register_APDU.cpp
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@@ -19,8 +19,8 @@ U2F_Register_APDU::U2F_Register_APDU(const U2F_Msg_CMD &msg, const vector<uint8_
throw runtime_error{ "Incorrect registration size" };
else if (p1 != 0x00 || p2 != 0x00)
{
cerr << "p1: " << static_cast<uint32_t>(p1) << ", p2: " << static_cast<uint32_t>(p2) << endl;
//throw runtime_error{ "Invalid APDU parameters" };
cerr << "Ins: " << static_cast<uint32_t>(ins) << ", p1: " << static_cast<uint32_t>(p1) << ", p2: " << static_cast<uint32_t>(p2) << endl;
cerr << "Invalid APDU parameters detected" << endl;
}
copy(data.data() + 0, data.data() + 32, challengeP.begin());
@@ -31,7 +31,6 @@ U2F_Register_APDU::U2F_Register_APDU(const U2F_Msg_CMD &msg, const vector<uint8_
Storage::PubKey pubKey{};
//Unsure if necessary
//From github.com/pratikd650/Teensy_U2F/blob/master/Teensy_U2F.cpp
pubKey[0] = 0x04;
uECC_make_key(pubKey.data() + 1, privKey.data(), uECC_secp256r1());
@@ -41,13 +40,6 @@ U2F_Register_APDU::U2F_Register_APDU(const U2F_Msg_CMD &msg, const vector<uint8_
Storage::privKeys[this->keyH] = privKey;
Storage::pubKeys[this->keyH] = pubKey;
Storage::keyCounts[this->keyH] = 0;
clog << "Produced pub key: " << hex;
for (auto b : pubKey)
clog << static_cast<uint32_t>(b) << ' ';
clog << endl << dec << "Got U2F_Reg request" << endl;
}
void U2F_Register_APDU::respond(const uint32_t channelID) const
@@ -59,7 +51,6 @@ void U2F_Register_APDU::respond(const uint32_t channelID) const
auto& response = m.data;
const auto appParam = Storage::appParams[this->keyH];
const auto pubKey = Storage::pubKeys[this->keyH];
const auto privKey = Storage::privKeys[this->keyH];
response.push_back(0x05);
copy(pubKey.begin(), pubKey.end(), back_inserter(response));
@@ -94,17 +85,13 @@ void U2F_Register_APDU::respond(const uint32_t channelID) const
}
Signature signature;
std::clog << "Will sign digest with priv key" << std::endl;
uECC_sign(attestPrivKey, digest.data(), digest.size(), signature.data(), uECC_secp256r1());
//Append signature as DER
std::clog << "Will append sig as DER" << std::endl;
appendSignatureAsDER(response, signature);
response.push_back(static_cast<uint16_t>(APDU_STATUS::SW_NO_ERROR) >> 8);
response.push_back(static_cast<uint16_t>(APDU_STATUS::SW_NO_ERROR) & 0xff);
std::clog << "Writing out " << response.size() << " bytes in response" << std::endl;
m.write();
}

2
U2F_Version_APDU.cpp
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@@ -9,8 +9,6 @@ using namespace std;
U2F_Version_APDU::U2F_Version_APDU(const U2F_Msg_CMD &msg)
{
clog << "Got U2F_Ver APDU request" << endl;
//Don't actually respond yet
}