1 files changed, 523 insertions, 0 deletions
diff --git a/src/Common/EMVCard.cpp b/src/Common/EMVCard.cpp
new file mode 100644
index 00000000..e96422b1
--- /dev/null
+++ b/src/Common/EMVCard.cpp
@@ -0,0 +1,523 @@
+#include "EMVCard.h"
+#include "TLVParser.h"
+#include "SCardReader.h"
+#include "PCSCException.h"
+
+#include "Platform/Finally.h"
+#include "Platform/ForEach.h"
+#include <vector>
+#include <iostream>
+#include <algorithm>
+
+#if !defined(TC_WINDOWS) || defined(TC_PROTOTYPE)
+#include "Platform/SerializerFactory.h"
+#include "Platform/StringConverter.h"
+#include "Platform/SystemException.h"
+#else
+#include "Dictionary.h"
+#include "Language.h"
+#endif
+
+using namespace std;
+
+namespace VeraCrypt
+{
+#ifndef TC_WINDOWS
+	wstring ArrayToHexWideString(const unsigned char * pbData, size_t cbData)
+	{
+		static const wchar_t* hexChar = L"0123456789ABCDEF";
+		wstring result;
+		if (pbData)
+		{
+			for (size_t i = 0; i < cbData; i++)
+			{
+				result += hexChar[pbData[i] >> 4];
+				result += hexChar[pbData[i] & 0x0F];
+			}
+		}
+
+		return result;
+	}
+#endif
+
+	map<EMVCardType, vector<byte>> InitializeSupportedAIDs()
+	{
+		map<EMVCardType, vector<byte>> supportedAIDs;
+		supportedAIDs.insert(std::make_pair(EMVCardType::AMEX, vector<byte>(EMVCard::AMEX_AID, EMVCard::AMEX_AID + sizeof(EMVCard::AMEX_AID))));
+		supportedAIDs.insert(std::make_pair(EMVCardType::MASTERCARD, vector<byte>(EMVCard::MASTERCARD_AID, EMVCard::MASTERCARD_AID + sizeof(EMVCard::MASTERCARD_AID))));
+		supportedAIDs.insert(std::make_pair(EMVCardType::VISA, vector<byte>(EMVCard::VISA_AID, EMVCard::VISA_AID + sizeof(EMVCard::VISA_AID))));
+		return supportedAIDs;
+	}
+
+	const byte EMVCard::AMEX_AID[7]										= {0xA0, 0x00, 0x00, 0x00, 0x00, 0x25, 0x10};
+	const byte EMVCard::MASTERCARD_AID[7]								= {0xA0, 0x00, 0x00, 0x00, 0x04, 0x10, 0x10};
+	const byte EMVCard::VISA_AID[7]										= {0xA0, 0x00, 0x00, 0x00, 0x03, 0x10, 0x10};
+	const map<EMVCardType, vector<byte>> EMVCard::SUPPORTED_AIDS		= InitializeSupportedAIDs();
+
+	EMVCard::EMVCard() : SCard(), m_lastPANDigits(L"")
+	{
+	}
+	
+	EMVCard::EMVCard(size_t slotId) : SCard(slotId), m_lastPANDigits(L"")
+    {
+    }
+
+    EMVCard::~EMVCard()
+    {
+		Clear();
+    }
+
+	EMVCard::EMVCard(const EMVCard& other) :
+			SCard(other),
+			m_aid(other.m_aid),
+			m_supportedAids(other.m_supportedAids),
+			m_iccCert(other.m_iccCert),
+			m_issuerCert(other.m_issuerCert),
+			m_cplcData(other.m_cplcData),
+			m_lastPANDigits(other.m_lastPANDigits)
+	{
+	}
+
+	EMVCard::EMVCard(EMVCard&& other) :
+			SCard(other),
+			m_aid(std::move(other.m_aid)),
+			m_supportedAids(std::move(other.m_supportedAids)),
+			m_iccCert(std::move(other.m_iccCert)),
+			m_issuerCert(std::move(other.m_issuerCert)),
+			m_cplcData(std::move(other.m_cplcData)),
+			m_lastPANDigits(std::move(other.m_lastPANDigits))
+	{
+	}
+	
+	EMVCard& EMVCard::operator = (const EMVCard& other)
+	{
+		if (this != &other)
+		{
+			SCard::operator=(other);
+			m_aid = other.m_aid;
+			m_supportedAids = other.m_supportedAids;
+			m_iccCert = other.m_iccCert;
+			m_issuerCert = other.m_issuerCert;
+			m_cplcData = other.m_cplcData;
+			m_lastPANDigits = other.m_lastPANDigits;
+		}
+		return *this;
+	}
+	
+	EMVCard& EMVCard::operator = (EMVCard&& other)
+	{
+		if (this != &other)
+		{
+			SCard::operator=(other);
+			m_reader = std::move(other.m_reader);
+			m_aid = std::move(other.m_aid);
+			m_supportedAids = std::move(other.m_supportedAids);
+			m_iccCert = std::move(other.m_iccCert);
+			m_issuerCert = std::move(other.m_issuerCert);
+			m_cplcData = std::move(other.m_cplcData);
+			m_lastPANDigits = std::move(other.m_lastPANDigits);
+		}
+		return *this;
+	}
+
+	void EMVCard::Clear(void)
+	{
+		m_aid.clear();
+		m_supportedAids.clear();
+		m_iccCert.clear();
+		m_issuerCert.clear();
+		m_cplcData.clear();
+		m_lastPANDigits.clear();
+	}
+
+	vector<byte> EMVCard::GetCardAID(bool forceContactless)
+	{
+		vector<vector<byte>> 				supportedAIDs;
+		vector<byte> 						supportedAIDsPriorities;
+		vector<pair<byte, vector<byte>>> 	supportedAIDsSorted;
+		bool 								hasBeenReset = false;
+		CommandAPDU 						command;
+		ResponseAPDU 						response;
+		vector<byte> 						responseData;
+		shared_ptr<TLVNode> 				rootNode;
+		shared_ptr<TLVNode> 				fciNode;
+		shared_ptr<TLVNode> 				dfNameNode;
+		shared_ptr<TLVNode> 				sfiNode;
+		shared_ptr<TLVNode> 				fciIssuerNode;
+		shared_ptr<TLVNode> 				fciIssuerDiscretionaryDataNode;
+		shared_ptr<TLVNode> 				templateNode;
+		vector<shared_ptr<TLVNode>> 		pseDirectoryNodes;
+		unsigned char 						sfi;
+		bool 								usingContactless = false;
+		vector<byte>						tokenAID;
+
+		if (m_aid.size())
+			return m_aid;
+
+		if (m_reader)
+		{
+			if (m_reader->IsCardPresent())
+			{
+				m_reader->Connect(SCARD_PROTOCOL_T0 | SCARD_PROTOCOL_T1, hasBeenReset, true);
+				m_reader->BeginTransaction();
+				finally_do_arg (shared_ptr<SCardReader>, m_reader, { finally_arg->EndTransaction(); });
+
+				try
+				{
+					for (auto it = EMVCard::SUPPORTED_AIDS.begin(); it != EMVCard::SUPPORTED_AIDS.end(); it++)
+					{
+						command = CommandAPDU(CLA_ISO7816, INS_SELECT_FILE, 0x04, 0x00, it->second, SCardReader::shortAPDUMaxTransSize);
+						m_reader->ApduProcessData(command, response);
+						if (response.getSW() == SW_NO_ERROR)
+						{
+							tokenAID = it->second;
+							break;
+						}
+					}
+
+					if (tokenAID.size())
+					{
+						m_supportedAids.push_back(tokenAID);
+						m_aid = tokenAID;
+					}
+					else
+					{
+						// The following code retrieves the supported AIDs from the card using PSE.
+						// If the card supports more than one AID, the returned list is sorted using the AIDs priorities,
+						// the first AID being the one with more priority.
+						if (forceContactless)
+						{
+							usingContactless = true;
+							command = CommandAPDU(CLA_ISO7816, INS_SELECT_FILE, 0x04, 0x00, EMV_PSE2, 0, sizeof(EMV_PSE2), SCardReader::shortAPDUMaxTransSize);
+							m_reader->ApduProcessData(command, response);
+						}
+						else 
+						{
+							command = CommandAPDU(CLA_ISO7816, INS_SELECT_FILE, 0x04, 0x00, EMV_PSE1, 0, sizeof(EMV_PSE1), SCardReader::shortAPDUMaxTransSize);
+							m_reader->ApduProcessData(command, response);
+							if (response.getSW() != SW_NO_ERROR)
+							{
+								// EMV_PSE2 not found, try EMV_PSE1
+								usingContactless = true;
+								command = CommandAPDU(CLA_ISO7816, INS_SELECT_FILE, 0x04, 0x00, EMV_PSE2, 0, sizeof(EMV_PSE2), SCardReader::shortAPDUMaxTransSize);
+								m_reader->ApduProcessData(command, response);
+							}
+						}
+						if (response.getSW() == SW_NO_ERROR && response.getData().size() > 0)
+						{
+							responseData = response.getData();
+							rootNode = TLVParser::TLV_Parse(responseData.data(), responseData.size());
+							fciNode = TLVParser::TLV_Find(rootNode, EMV_FCI_TAG);
+							if (fciNode && fciNode->Subs->size() >= 2)
+							{
+								if (usingContactless)
+								{
+									fciIssuerNode = TLVParser::TLV_Find(fciNode, EMV_FCI_ISSUER_TAG);
+									if (fciIssuerNode && fciIssuerNode->Subs->size() >= 1)
+									{
+										fciIssuerDiscretionaryDataNode = TLVParser::TLV_Find(fciIssuerNode, EMV_FCI_ISSUER_DISCRETIONARY_DATA_TAG);
+										if (fciIssuerDiscretionaryDataNode && fciIssuerDiscretionaryDataNode->Subs->size() >= 1)
+										{
+											for (size_t i = 0; i < fciIssuerDiscretionaryDataNode->Subs->size(); i++)
+											{
+												if (fciIssuerDiscretionaryDataNode->Subs->at(i)->Tag == EMV_DIRECTORY_ENTRY_TAG)
+												{
+													pseDirectoryNodes.push_back(fciIssuerDiscretionaryDataNode->Subs->at(i));
+												}
+											}
+										}
+									}
+								}
+								else
+								{
+									dfNameNode = TLVParser::TLV_Find(fciNode, EMV_DFNAME_TAG);
+									if (dfNameNode)
+									{
+										fciIssuerNode = TLVParser::TLV_Find(fciNode, EMV_FCI_ISSUER_TAG);
+										if (fciIssuerNode)
+										{
+											sfiNode = TLVParser::TLV_Find(fciIssuerNode, EMV_SFI_TAG);
+											if (sfiNode && sfiNode->Value->size() == 1)
+											{
+												sfi = sfiNode->Value->at(0);
+
+												byte rec = 1;
+												do
+												{
+													command = CommandAPDU(CLA_ISO7816, INS_READ_RECORD, rec++, (sfi << 3) | 4, SCardReader::shortAPDUMaxTransSize);
+													m_reader->ApduProcessData(command, response);
+													if (response.getSW() == SW_NO_ERROR && response.getData().size() > 0)
+													{
+														responseData = response.getData();
+
+														try
+														{
+															templateNode = TLVParser::TLV_Parse(responseData.data(), responseData.size());
+															if (templateNode && templateNode->Tag == EMV_TEMPLATE_TAG && templateNode->Subs->size() >= 1)
+															{
+																for (size_t i = 0; i < templateNode->Subs->size(); i++)
+																{
+																	if (templateNode->Subs->at(i)->Tag == EMV_DIRECTORY_ENTRY_TAG)
+																	{
+																		pseDirectoryNodes.push_back(templateNode->Subs->at(i));
+																	}
+																}
+															}
+														}
+														catch(TLVException)
+														{
+															continue;
+														}
+													}
+												} while (response.getData().size() > 0);
+											}
+										}
+									}
+								}
+							}
+						}
+
+						for (size_t i = 0; i < pseDirectoryNodes.size(); i++)
+						{
+							shared_ptr<TLVNode> aidNode;
+							shared_ptr<TLVNode> aidPriorityNode;
+							aidNode = TLVParser::TLV_Find(pseDirectoryNodes[i], EMV_AID_TAG);
+							aidPriorityNode = TLVParser::TLV_Find(pseDirectoryNodes[i], EMV_PRIORITY_TAG);
+							if (aidNode && aidNode->Value->size() > 0 && aidPriorityNode && aidPriorityNode->Value->size() == 1)
+							{
+								supportedAIDs.push_back(*aidNode->Value.get());
+								supportedAIDsPriorities.push_back(aidNode->Value->at(0));
+							}
+						}
+						for(size_t i = 0; i < supportedAIDs.size(); i++)
+						{
+							supportedAIDsSorted.push_back(make_pair(supportedAIDsPriorities[i], supportedAIDs[i]));
+						}
+						std::sort(supportedAIDsSorted.begin(), supportedAIDsSorted.end());
+						for(size_t i = 0; i < supportedAIDs.size(); i++)
+						{
+							supportedAIDs[i] = supportedAIDsSorted[i].second;
+						}
+
+						if (supportedAIDs.size())
+						{
+							m_supportedAids = supportedAIDs;
+							tokenAID = supportedAIDs[0];
+							m_aid = tokenAID;
+						}
+					}
+				}
+				catch (...)
+				{
+				}
+			}
+		}
+
+		return tokenAID;
+	}
+
+	void EMVCard::GetCardContent(vector<byte>& iccCert, vector<byte>& issuerCert, vector<byte>& cplcData)
+	{
+		bool						hasBeenReset	= false;
+		bool						aidSelected		= false;
+		bool						iccFound		= false;
+		bool						issuerFound		= false;
+		bool						cplcFound		= false;
+		vector<byte>				emvCardAid;
+		shared_ptr<TLVNode>			rootNode;
+		shared_ptr<TLVNode>			iccPublicKeyCertNode;
+		shared_ptr<TLVNode>			issuerPublicKeyCertNode;
+		CommandAPDU					command;
+		ResponseAPDU				response;
+		vector<byte>				responseData;
+
+		iccCert.clear();
+		issuerCert.clear();
+		cplcData.clear();
+
+		if (m_iccCert.size() && m_issuerCert.size() && m_cplcData.size())
+		{
+			iccCert = m_iccCert;
+			issuerCert = m_issuerCert;
+			cplcData = m_cplcData;
+			return;
+		}
+
+		emvCardAid = GetCardAID();
+		if (emvCardAid.size() == 0)
+		{
+			throw EMVUnknownCardType();
+		}
+
+		if (m_reader)
+		{
+			if (m_reader->IsCardPresent())
+			{
+				m_reader->Connect(SCARD_PROTOCOL_T0 | SCARD_PROTOCOL_T1, hasBeenReset, true);
+				m_reader->BeginTransaction();
+				finally_do_arg (shared_ptr<SCardReader>, m_reader, { finally_arg->EndTransaction(); });
+
+				// First get CPLC before selecting the AID of the card.
+				command = CommandAPDU(0x80, INS_GET_DATA, (EMV_CPLC_TAG >> 8) & 0xFF, EMV_CPLC_TAG & 0xFF, SCardReader::shortAPDUMaxTransSize);
+				m_reader->ApduProcessData(command, response);
+				if (response.getSW() == SW_NO_ERROR && response.getData().size() > 0)
+				{
+					cplcFound = true;
+					cplcData = response.getData();
+
+					// Then get the certs.
+					command = CommandAPDU(CLA_ISO7816, INS_SELECT_FILE, 0x04, 0x00, emvCardAid, SCardReader::shortAPDUMaxTransSize);
+					m_reader->ApduProcessData(command, response);
+					if (response.getSW() == SW_NO_ERROR)
+					{
+						aidSelected = true;
+
+						// TODO: Send GET PROCESSING OPTIONS to get the AIL and AFL,
+						//		 which will then be used to get the actual start and end of sfi and rec.
+						for (byte sfi = 1; sfi < 32 && (!iccFound || !issuerFound); sfi++)
+						{
+							for (byte rec = 1; rec < 17 && (!iccFound || !issuerFound); rec++)
+							{
+								command = CommandAPDU(CLA_ISO7816, INS_READ_RECORD, rec, (sfi << 3) | 4, SCardReader::shortAPDUMaxTransSize);
+								m_reader->ApduProcessData(command, response);
+								if (response.getSW() == SW_NO_ERROR && response.getData().size() > 0)
+								{
+									responseData = response.getData();
+
+									try
+									{
+										rootNode = TLVParser::TLV_Parse(responseData.data(), responseData.size());
+									}
+									catch(TLVException)
+									{
+										continue;
+									}
+
+									iccPublicKeyCertNode = TLVParser::TLV_Find(rootNode, EMV_ICC_PK_CERT_TAG);
+									if (iccPublicKeyCertNode && iccPublicKeyCertNode->Value->size() > 0)
+									{
+										iccFound = true;
+										iccCert = *iccPublicKeyCertNode->Value.get();
+									}
+
+									issuerPublicKeyCertNode = TLVParser::TLV_Find(rootNode, EMV_ISS_PK_CERT_TAG);
+									if (issuerPublicKeyCertNode && issuerPublicKeyCertNode->Value->size() > 0)
+									{
+										issuerFound = true;
+										issuerCert = *issuerPublicKeyCertNode->Value.get();
+									}
+								}
+							}
+						}
+					}
+				}
+			}
+		}
+
+		if (!cplcFound)
+			throw EMVCPLCNotFound();
+
+		if (!aidSelected)
+			throw EMVSelectAIDFailed();
+
+		if (!iccFound)
+			throw EMVIccCertNotFound();
+
+		if (!issuerFound)
+			throw EMVIssuerCertNotFound();
+
+		m_iccCert = iccCert;
+		m_issuerCert = issuerCert;
+		m_cplcData = cplcData;
+	}
+
+	void EMVCard::GetCardPAN(wstring& lastPANDigits)
+	{
+		bool						hasBeenReset	= false;
+		bool						panFound		= false;
+		bool						aidSelected		= false;
+		vector<byte>				EMVCardAid;
+		vector<byte>				panData;
+		shared_ptr<TLVNode>			rootNode;
+		shared_ptr<TLVNode>			panNode;
+		CommandAPDU					command;
+		ResponseAPDU				response;
+		vector<byte>				responseData;
+
+		lastPANDigits = L"";
+
+		if (m_lastPANDigits != L"")
+		{
+			lastPANDigits = m_lastPANDigits;
+			return;
+		}
+
+		EMVCardAid = GetCardAID();
+		if (EMVCardAid.size() == 0)
+		{
+			throw EMVUnknownCardType();
+		}
+
+		if (m_reader)
+		{
+			if (m_reader->IsCardPresent())
+			{
+				m_reader->Connect(SCARD_PROTOCOL_T0 | SCARD_PROTOCOL_T1, hasBeenReset, true);
+				m_reader->BeginTransaction();
+				finally_do_arg (shared_ptr<SCardReader>, m_reader, { finally_arg->EndTransaction(); });
+
+				command = CommandAPDU(CLA_ISO7816, INS_SELECT_FILE, 0x04, 0x00, EMVCardAid, SCardReader::shortAPDUMaxTransSize);
+				m_reader->ApduProcessData(command, response);
+				if (response.getSW() == SW_NO_ERROR)
+				{
+					aidSelected = true;
+
+					// TODO: Send GET PROCESSING OPTIONS to get the AIL and AFL,
+					//		 which will then be used to get the actual start and end of sfi and rec.
+					for (byte sfi = 1; sfi < 32 && !panFound; sfi++)
+					{
+						for (byte rec = 1; rec < 17 && !panFound; rec++)
+						{
+							command = CommandAPDU(CLA_ISO7816, INS_READ_RECORD, rec, (sfi << 3) | 4, SCardReader::shortAPDUMaxTransSize);
+							m_reader->ApduProcessData(command, response);
+							if (response.getSW() == SW_NO_ERROR && response.getData().size() > 0)
+							{
+								responseData = response.getData();
+
+								try
+								{
+									rootNode = TLVParser::TLV_Parse(responseData.data(), responseData.size());
+								}
+								catch(TLVException)
+								{
+									continue;
+								}
+
+								panNode = TLVParser::TLV_Find(rootNode, EMV_PAN_TAG);
+								if (panNode && panNode->Value->size() >= 8)
+								{
+									panFound = true;
+									panData = *panNode->Value.get();
+									panData = vector<byte>(panData.rbegin(), panData.rbegin() + 2); // only interested in last digits
+									std::swap(panData[0], panData[1]);
+									lastPANDigits = ArrayToHexWideString(panData.data(), (int) panData.size());
+								}
+							}
+						}
+					}
+				}
+			}
+		}
+		
+		if (panData.size())
+			burn(panData.data(), panData.size());
+
+		if (!aidSelected)
+			throw EMVSelectAIDFailed();
+
+		if (!panFound)
+			throw EMVPANNotFound();
+
+		m_lastPANDigits = lastPANDigits;
+	}
+}