Project

# Title Team Members TA Documents Sponsor
17 CryptoCam
 Jihoon Lee
Sameeth Gosike
Sang Baek Han
 Jose Sanchez Vicarte design_document0.pdf
design_document0.pdf
proposal0.pdf
Problem Statement:
Secure acquisition of confidential image data nowadays depend on encrypted hardware or software that requires external hardware (example: Encrypted Hard drive, encryption software). However, this does not provide immediate protection from unexpected confistication of camera or camera lost.

Proposed Solution:
When the photo is taken, the additional hardware components between camera data bus and memory storage will provide immediate encryption process. Only authorized users who have the right key will be able to decrypt the image.

Components:
1. Camera - We will be using OV7670 CMOS camera from Omnivision. The camera uses I2C interface for register settings and 8 PIO lines to send data in form of RGB or QCIF. We will be using 640x480 RGB 555 format. It has internal registers that control optical properties and data format.

2. Data processing unit - We will be using one 32 bit microprocessor to handle image data and 1 external SRAM (2MB) to process each round of encryption scheme. We need external SRAM since our data is 600kb while internal RAM of processors these days are mostly 512kb max. And we will be using an 16 bit DSP processor in series with the microprocessor to include different sequences of Fourier Transformation as part of our encryption scheme. 3 buttons will be used for FSM control: shutter, register initialization, and key receiver.

3. Peripherals - We are going to use USB module for receiving key code stored in USB. We will need an additional 32-bit microprocessor for input switching between camera data and key code that will be fed to data processing unit (i.e which input will be sent). Another USB will be used to store the encrypted image separately from the key code USB.

Electronic Replacement for COVID-19 Building Monitors @ UIUC

Patrick McBrayer, Zewen Rao, Yijie Zhang

Featured Project

Team Members: Patrick McBrayer, Yijie Zhang, Zewen Rao

Problem Statement:

Students who volunteer to monitor buildings at UIUC are at increased risk of contracting COVID-19 itself, and passing it on to others before they are aware of the infection. Due to this, I propose a project that would create a technological solution to this issue using physical 2-factor authentication through the “airlock” style doorways we have at ECEB and across campus.

Solution Overview:

As we do not have access to the backend of the Safer Illinois application, or the ability to use campus buildings as a workspace for our project, we will be designing a proof of concept 2FA system for UIUC building access. Our solution would be composed of two main subsystems, one that allows initial entry into the “airlock” portion of the building using a scannable QR code, and the other that detects the number of people that entered the space, to determine whether or not the user will be granted access to the interior of the building.

Solution Components:

Subsystem #1: Initial Detection of Building Access

- QR/barcode scanner capable of reading the code presented by the user, that tells the system whether that person has been granted or denied building access. (An example of this type of sensor: (https://www.amazon.com/Barcode-Reading-Scanner-Electronic-Connector/dp/B082B8SVB2/ref=sr_1_11?dchild=1&keywords=gm65+scanner&qid=1595651995&sr=8-11)

- QR code generator using C++/Python to support the QR code scanner.

- Microcontroller to receive the information from the QR code reader and decode the information, then decide whether to unlock the door, or keep it shut. (The microcontroller would also need an internal timer, as we plan on encoding a lifespan into the QR code, therefore making them unusable after 4 days).

- LED Light to indicate to the user whether or not access was granted.

- Electronic locking mechanism to open both sets of doors.

Subsystem #2: Airlock Authentication of a Single User

- 2 aligned sensors ( one tx and other is rx) on the bottom of the door that counts the number of people crossing a certain line. (possibly considering two sets of these, so the person could not jump over, or move under the sensors. Most likely having the second set around the middle of the door frame.

- Microcontroller to decode the information provided by the door sensors, and then determine the number of people who have entered the space. Based on this information we can either grant or deny access to the interior building.

- LED Light to indicate to the user if they have been granted access.

- Possibly a speaker at this stage as well, to tell the user the reason they have not been granted access, and letting them know the

incident has been reported if they attempted to let someone into the building.

Criterion of Success:

- Our system generates valid QR codes that can be read by our scanner, and the data encoded such as lifespan of the code and building access is transmitted to the microcontroller.

- Our 2FA detection of multiple entries into the space works across a wide range of users. This includes users bound to wheelchairs, and a wide range of heights and body sizes.