Cogent Cis-202 Iris Scanner Driver Windows 7 32 Bit -

// Pseudocode from decompiled cis202.sys NTSTATUS CaptureIrisImage(PDEVICE_EXTENSION dx, PUCHAR outBuffer, ULONG outLen) PURB urb = ExAllocatePool(NonPagedPool, sizeof(_URB_BULK_OR_INTERRUPT_TRANSFER)); urb->UrbBulkOrInterruptTransfer.TransferBufferLength = IRIS_RAW_SIZE; // 640*480 = 307200 bytes urb->UrbBulkOrInterruptTransfer.TransferBuffer = dx->IrisBuffer; // Non-paged pool urb->UrbBulkOrInterruptTransfer.TransferFlags = USBD_TRANSFER_DIRECTION_IN; IoCallDriver(dx->UsbDevice, urb); RtlCopyMemory(outBuffer, dx->IrisBuffer, outLen);

Below is a covering the architecture, driver internals, compatibility issues, security analysis, and practical recovery methods for this specific configuration. Technical Analysis Paper: Cogent CIS-202 Iris Scanner Driver on Windows 7 32-bit Document ID: CIS-202-WIN7-DEEP-2024 Target OS: Windows 7 SP1 (x86) Hardware: Cogent Systems CIS-202 Iris Scanner (USB VID_1D3C PID_0202) Status: Legacy (EOL as of Jan 2020) 1. Introduction & Historical Context The Cogent CIS-202 was a near-infrared (NIR) iris imaging device used in government ID programs (e.g., Aadhaar in India, US-VISIT). By 2024, Windows 7 32-bit is unsupported, and Cogent (now part of Gemalto/Thales) no longer releases signed drivers for this platform. Nevertheless, legacy systems in air-gapped environments still require driver functionality. cogent cis-202 iris scanner driver windows 7 32 bit

qemu-system-x86_32 -usb -device usb-host,vendorid=0x1d3c,productid=0x0202 \ -drive file=win7_x86.qcow2 -m 2048 Or use a via libusb and a custom userspace driver that responds to the IOCTLs with pre-captured iris images. 8. Modern Alternatives & Migration Path Given the obsolescence, a deep paper should conclude with pragmatic advice: // Pseudocode from decompiled cis202

[CIS202_AddReg] HKR,,DevLoader,,*ntkern HKR,,NTMPDriver,,"cis202.sys" By 2024, Windows 7 32-bit is unsupported, and

| Field | Value | |-------|-------| | Vendor ID | 0x1D3C (Cogent Systems) | | Product ID | 0x0202 (CIS-202) | | Interface Class | 0xFF (Vendor-specific) | | Endpoints | Bulk OUT (0x02), Bulk IN (0x81) | | Max Packet Size | 512 bytes (high-speed) | | Iris resolution | 640x480, 8-bit grayscale |

| IOCTL | Function | |-------|----------| | 0x222000 | Capture iris image (returns raw 8-bit grayscale) | | 0x222004 | Set LED brightness (parameter: 0-255) | | 0x222008 | Get device firmware version | | 0x22200C | Start video stream for focus assist | | 0x222010 | Stop video stream |

| CVE | Issue | Impact | |-----|-------|--------| | CVE-2019-1189 | Improper input validation in IOCTL 0x222000 | Local privilege escalation via buffer overflow in kernel pool | | CVE-2018-8213 | Driver allows arbitrary user-mode read of iris buffer | Information disclosure (iris template theft) | | No CVE (unpatched) | No IOMMU protection – DMA attacks possible if USB port accessible | Physical memory read/write |