john0312/hitcon-pcb-badge
Mar 2025 – Aug 2025
6 Months active
Languages Used
C++CMarkdownPythonShellXMLYAML
Technical Skills
C++CryptographyEmbedded SystemsLow-level ProgrammingBuild SystemsC++ Development
aoaaceai
PROFILE
Aoaaceai
Over six months, Aoaa Ceai developed secure, scalable embedded systems for the john0312/hitcon-pcb-badge repository, focusing on cryptographic infrastructure, multiplayer game logic, and backend integration. They engineered Elliptic Curve Cryptography and SHA3 hashing in C++ to enable per-device signing, verification, and secure IR packet transmission, while refactoring code for maintainability and performance. Their work included asynchronous programming for real-time multiplayer score handling, robust API development in Python, and backend provisioning with FastAPI. By modernizing build systems, improving code hygiene, and implementing persistent storage, Aoaa Ceai delivered a reliable, production-ready platform supporting secure gameplay, device identity, and backend validation.
Overall Statistics
Feature vs Bugs
66%Features
Repository Contributions
87Total
Bugs
20
Commits
87
Features
39
Lines of code
19,780
Activity Months6
Your Network
17 peopleSame Organization
@csie.ntu.edu.tw4
Work History
August 2025
53 Commits • 26 Features
Aug 1, 2025August 2025 focused on delivering secure, scalable foundations for hitcon-pcb-badge while improving reliability and maintainability. Major accomplishments include implementing per-board private key generation and binary representation to enable per-device cryptography, integrating a server component to support backend validation and provisioning, modernizing the codebase by adopting constexpr in place of defines, and delivering Tama UX enhancements (hunger level) together with NV-storage-backed level-up persistence. The month also yielded a first workable version of PCB Utilities (with RC1 release) and several build/documentation improvements to facilitate deployment and onboarding.
53 Commits • 26 Features
Aug 1, 2025August 2025 focused on delivering secure, scalable foundations for hitcon-pcb-badge while improving reliability and maintainability. Major accomplishments include implementing per-board private key generation and binary representation to enable per-device cryptography, integrating a server component to support backend validation and provisioning, modernizing the codebase by adopting constexpr in place of defines, and delivering Tama UX enhancements (hunger level) together with NV-storage-backed level-up persistence. The month also yielded a first workable version of PCB Utilities (with RC1 release) and several build/documentation improvements to facilitate deployment and onboarding.
August 2025
July 2025
11 Commits • 5 Features
Jul 1, 2025Monthly summary for 2025-07: Delivered security, multiplayer, and gameplay enhancements for john0312/hitcon-pcb-badge, driving reliability, security posture, and user engagement. Implemented a unified multiplayer framework (MultiplayerGame) and refactored Tetris and Snake to share start/over/attack handling, with improved score uploads for both single-player and multiplayer modes. Strengthened cryptographic integrity with per-board private key management, ECC verification, and robust signing/verification workflows. Expanded gameplay capabilities with a QTE mode for Tama, including new QTE/Arrow/Target classes, lifecycle handling, and multiplayer scoring. Enhanced user identity and reliability through increased username entropy and improved public announcement signing flow. Addressed critical stability issues, including a Snake startup bug fix, contributing to smoother onboarding and play sessions. These changes collectively improve security, scalability, and opportunities for feature parity across games, while reducing maintenance risk and enabling richer user experiences.
July 2025
11 Commits • 5 Features
Jul 1, 2025Monthly summary for 2025-07: Delivered security, multiplayer, and gameplay enhancements for john0312/hitcon-pcb-badge, driving reliability, security posture, and user engagement. Implemented a unified multiplayer framework (MultiplayerGame) and refactored Tetris and Snake to share start/over/attack handling, with improved score uploads for both single-player and multiplayer modes. Strengthened cryptographic integrity with per-board private key management, ECC verification, and robust signing/verification workflows. Expanded gameplay capabilities with a QTE mode for Tama, including new QTE/Arrow/Target classes, lifecycle handling, and multiplayer scoring. Enhanced user identity and reliability through increased username entropy and improved public announcement signing flow. Addressed critical stability issues, including a Snake startup bug fix, contributing to smoother onboarding and play sessions. These changes collectively improve security, scalability, and opportunities for feature parity across games, while reducing maintenance risk and enabling richer user experiences.
June 2025
11 Commits • 4 Features
Jun 1, 2025June 2025 performance summary for john0312/hitcon-pcb-badge: Delivered security-focused IR communication capabilities, real-time multiplayer score handling, and crypto performance improvements. Implemented asynchronous, modular crypto/signing paths, queued packet delivery, and robust score synchronization to meet tight timing constraints. Result: stronger security for IR packets, reliable multiplayer scoring flows, and maintainable crypto code with clear performance budgets.
11 Commits • 4 Features
Jun 1, 2025June 2025 performance summary for john0312/hitcon-pcb-badge: Delivered security-focused IR communication capabilities, real-time multiplayer score handling, and crypto performance improvements. Implemented asynchronous, modular crypto/signing paths, queued packet delivery, and robust score synchronization to meet tight timing constraints. Result: stronger security for IR packets, reliable multiplayer scoring flows, and maintainable crypto code with clear performance budgets.
June 2025
May 2025
6 Commits • 2 Features
May 1, 2025May 2025 monthly summary for repository john0312/hitcon-pcb-badge focusing on cryptographic capability and code hygiene. Delivered the HashService Core and ECC integration to enable SHA3 hashing and secure cryptographic workflows tied to ECC operations. Completed scaffolding, initialization, update/finalize logic, and integration touchpoints, establishing end-to-end hashing readiness. Performed repository cleanup to remove DS_Store noise, improving CI reliability and code review clarity. The work enhances security for badge verification, strengthens the cryptographic foundations of the project, and provides a stable base for upcoming features.
May 2025
6 Commits • 2 Features
May 1, 2025May 2025 monthly summary for repository john0312/hitcon-pcb-badge focusing on cryptographic capability and code hygiene. Delivered the HashService Core and ECC integration to enable SHA3 hashing and secure cryptographic workflows tied to ECC operations. Completed scaffolding, initialization, update/finalize logic, and integration touchpoints, establishing end-to-end hashing readiness. Performed repository cleanup to remove DS_Store noise, improving CI reliability and code review clarity. The work enhances security for badge verification, strengthens the cryptographic foundations of the project, and provides a stable base for upcoming features.
April 2025
3 Commits • 1 Features
Apr 1, 2025April 2025: Strengthened embedded cryptography and reliability in john0312/hitcon-pcb-badge. Delivered ECC cryptography enhancements reducing signature size and refactoring parameters for storage and transmission efficiency, and fixed ECC module build and verification issues to improve robustness and deployment reliability. Technologies demonstrated include ECC cryptography, parameter refactoring, namespace management, and build/verification tooling. Business impact: smaller footprint, faster secure communications, fewer build-time blockers, enabling smoother deployment in embedded environments.
3 Commits • 1 Features
Apr 1, 2025April 2025: Strengthened embedded cryptography and reliability in john0312/hitcon-pcb-badge. Delivered ECC cryptography enhancements reducing signature size and refactoring parameters for storage and transmission efficiency, and fixed ECC module build and verification issues to improve robustness and deployment reliability. Technologies demonstrated include ECC cryptography, parameter refactoring, namespace management, and build/verification tooling. Business impact: smaller footprint, faster secure communications, fewer build-time blockers, enabling smoother deployment in embedded environments.
April 2025
March 2025
3 Commits • 1 Features
Mar 1, 2025March 2025 performance summary for john0312/hitcon-pcb-badge: - Key features delivered: Implemented Elliptic Curve Cryptography (ECC) framework with API definitions and core signing/verification logic; integrated ECC initialization into the main application flow. Commits: 85d140481107307d101ef7eceefb1d050f9879d4, 94ef1b5e480fa93b1eb9a85d788b51b24d223493, acd5dd85e6b67bb7c2b501420c126a3e43bbe385. - Major bugs fixed: No critical bugs reported this month; stability improvements come from cryptographic groundwork. - Overall impact and accomplishments: Establishes a secure cryptography foundation enabling signing/verification across the product, improving data integrity and trust; prepares for testing, auditing, and future feature expansion; aligns with security/compliance goals. - Technologies/skills demonstrated: ECC cryptography, API design, cryptographic core implementation (modular arithmetic, point operations), integration with application flow, version control traceability.
March 2025
3 Commits • 1 Features
Mar 1, 2025March 2025 performance summary for john0312/hitcon-pcb-badge: - Key features delivered: Implemented Elliptic Curve Cryptography (ECC) framework with API definitions and core signing/verification logic; integrated ECC initialization into the main application flow. Commits: 85d140481107307d101ef7eceefb1d050f9879d4, 94ef1b5e480fa93b1eb9a85d788b51b24d223493, acd5dd85e6b67bb7c2b501420c126a3e43bbe385. - Major bugs fixed: No critical bugs reported this month; stability improvements come from cryptographic groundwork. - Overall impact and accomplishments: Establishes a secure cryptography foundation enabling signing/verification across the product, improving data integrity and trust; prepares for testing, auditing, and future feature expansion; aligns with security/compliance goals. - Technologies/skills demonstrated: ECC cryptography, API design, cryptographic core implementation (modular arithmetic, point operations), integration with application flow, version control traceability.
Activity
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Quality Metrics
Correctness86.2%
Maintainability87.4%
Architecture84.2%
Performance82.0%
AI Usage22.6%
Skills & Technologies
Programming Languages
CC++MarkdownPythonShellXMLYAML
Technical Skills
API DevelopmentAsynchronous ProgrammingAsynchronous programmingBackend DevelopmentBug FixingBuild ProcessBuild SystemsC++C++ DevelopmentC/C++ DevelopmentCLI DevelopmentCode CommentingCode FormattingCode RefactoringCommunication Protocols
Repositories Contributed To
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