Cogent Cis-202 Iris Scanner Driver Windows 7 32 Bit 【480p】
Latency measured: ~180ms for capture + transfer on USB 2.0. For a deep paper, these CVEs are relevant:
// 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.
If you need a specific section expanded (e.g., full driver disassembly, Linux porting guide, or USB protocol dump), let me know. cogent cis-202 iris scanner driver windows 7 32 bit
Application (Biometric Service Provider) ↓ winbio.dll (Windows Biometric Framework - optional) ↓ cis202.dll (User-mode vendor library) ↓ DeviceIoControl() → [IOCTL calls] ↓ cis202.sys (Kernel-mode WDM driver) ↓ USB stack (usbhub.sys, usbccgp.sys) ↓ CIS-202 Hardware From binary analysis of cis202.sys (version 2.1.0.7):
These are unpatched on Windows 7 32-bit because Microsoft ended support before addressing them for Cogent. For research or driver development, a USB emulator can be used: Latency measured: ~180ms for capture + transfer on USB 2
| 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 |