Dump in the logs xbe signature info

src/Common/Xbe.cpp

@@ -828,3 +828,29 @@ bool Xbe::CheckXbeSignature()
 
 	return true; // success
 }
+
+bool Xbe::LoadRSAkey()
+{
+	bool bSuccess = false;
+	FILE* fp = fopen((std::string(szFolder_CxbxReloadedData) + std::string("\\RSAkey.bin")).c_str(), "rb");
+
+	if (fp != nullptr) {
+		// Determine the size of RSAkey.bin
+		fseek(fp, 0, SEEK_END);
+		long size = ftell(fp);
+		rewind(fp);
+
+		// Ensure that RSAkey.bin is 284 bytes and has a valid magic signature
+		if (size == 284) {
+			UCHAR temp[284] = { 0 };
+			fread(temp, 284, 1, fp);
+			if (!memcmp(temp, "RSA1", 4)) {
+				memcpy(xboxkrnl::XePublicKeyData, temp, 284);
+				bSuccess = true;
+			}
+		}
+		fclose(fp);
+	}
+
+	return bSuccess;
+}

src/Common/Xbe.h

@@ -77,6 +77,9 @@ class Xbe : public Error
         // Convert game region field to string
         const char *GameRegionToString();
 
+		// load the rsa key used to validate the signature of the xbe
+		bool LoadRSAkey();
+
         // Xbe header
         #include "AlignPrefix1.h"
         struct Header

src/Common/XbePrinter.cpp

@@ -81,6 +81,7 @@ std::string XbePrinter::GenXbeInfo()
     info.append(GenDumpHeader());
     info.append(GenXbeHeaderInfo());
     info.append(GenXbeCertificateInfo());
+	info.append(ValidateXbeSignature());
     info.append(GenSectionInfo());
     info.append(GenLibraryVersions());
     info.append(GenTLS());
@@ -285,6 +286,18 @@ std::string XbePrinter::GenGeneralHeaderInfo2()
     return text.str();
 }
 
+std::string XbePrinter::ValidateXbeSignature()
+{
+	std::string text("\nMissing RSA key. Unable to verify xbe signature\n\n");
+	if (Xbe_to_print->LoadRSAkey()) {
+		text = "\nInvalid xbe signature. Homebrew, tampered or pirated xbe?\n\n";
+		if (Xbe_to_print->CheckXbeSignature()) {
+			text = "\nValid xbe signature. Xbe is legit\n\n";
+		}
+	}
+	return text;
+}
+
 std::string XbePrinter::GenXbeCertificateInfo()
 {
     std::string text;

src/Common/XbePrinter.h

@@ -65,6 +65,8 @@ class XbePrinter
         std::string GenInitFlags();
         std::string GenGeneralHeaderInfo2();
 
+		std::string ValidateXbeSignature();
+
         std::string GenXbeCertificateInfo();
         std::string GenCertificateHeader();
         std::string GenAlternateTitleIDs();

src/CxbxKrnl/CxbxKrnl.cpp

@@ -812,6 +812,19 @@ void CxbxKrnlMain(int argc, char* argv[])
 			return;
 		}
 
+		// Check the signature of the xbe if possible
+		if (CxbxKrnl_Xbe->LoadRSAkey()) {
+			if (CxbxKrnl_Xbe->CheckXbeSignature()) {
+				printf("[0x%X] INIT: Valid xbe signature. Xbe is legit\n", GetCurrentThreadId());
+			}
+			else {
+				EmuWarning("Invalid xbe signature. Homebrew, tampered or pirated xbe?");
+			}
+		}
+		else {
+			EmuWarning("Missing RSA key. Unable to verify xbe signature");
+		}
+
 		// Detect XBE type :
 		g_XbeType = GetXbeType(&CxbxKrnl_Xbe->m_Header);
 

src/CxbxKrnl/EmuRsa.cpp

@@ -7,7 +7,7 @@
 // *  `88bo,__,o,    oP"``"Yo,  _88o,,od8P   oP"``"Yo,
 // *    "YUMMMMMP",m"       "Mm,""YUMMMP" ,m"       "Mm,
 // *
-// *   Cxbx->Win32->CxbxKrnl->EmuRsa.cpp
+// *   Cxbx->CxbxKrnl->EmuRsa.cpp
 // *
 // *  This file is part of the Cxbx project.
 // *

src/CxbxKrnl/EmuRsa.h

@@ -7,7 +7,7 @@
 // *  `88bo,__,o,    oP"``"Yo,  _88o,,od8P   oP"``"Yo,
 // *    "YUMMMMMP",m"       "Mm,""YUMMMP" ,m"       "Mm,
 // *
-// *   Cxbx->Win32->CxbxKrnl->EmuRsa.h
+// *   Cxbx->CxbxKrnl->EmuRsa.h
 // *
 // *  This file is part of the Cxbx project.
 // *
@@ -35,6 +35,8 @@
 #ifndef EMURSA_H
 #define EMURSA_H
 
+#pragma pack(4)
+
 typedef struct _RSA_PUBLIC_KEY
 {
 	union
@@ -52,6 +54,7 @@ typedef struct _RSA_PUBLIC_KEY
 	};
 }RSA_PUBLIC_KEY;
 
+#pragma pack()
 
 void RSAdecrypt(unsigned char* c_number, unsigned char* cryptbuffer, RSA_PUBLIC_KEY key);
 bool Verifyhash(unsigned char* hash, unsigned char* decryptBuffer, RSA_PUBLIC_KEY key);