01
Post-Quantum Cryptography
Quantum-resistant cryptographic infrastructure for certificates, communications, authentication and long-lived data.
Digital Trust Infrastructure
YYC
Securing the Next Digital Era.
Cryptography. Security. Digital Assets. Intelligent Platforms.
YYC develops the cryptographic and security infrastructure that connects Post-Quantum Cryptography, HSM, PKI, secure networks, AI security, digital asset custody and real-world smart platforms.
PQCPost-Quantum Cryptography
HSM / CAKeys & Digital Trust
AI SecurityIntelligent Defense
Digital AssetsWallet & Stablecoin
Smart PlatformsEchoQR & Applied IT
01 / Infrastructure
One Trust Layer.
Multiple Digital Worlds.
YYC connects foundational cryptography with security infrastructure and applied digital platforms. Each technology can operate independently while sharing a common trust architecture.
YYC
Digital Trust Core
PQCQuantum-Safe
HSMKey Protection
CA / PKIDigital Identity
VPNSecure Network
USB TokenSecure Credential
AI SecurityAI Defense
TONGSoft HSM
WalletDigital Assets
StablecoinSettlement
EchoQRSmart Commerce
02 / Cybersecurity
Security for the Post-Quantum Era.
A layered security architecture spanning PQC migration, HSM, CA, secure communications, hardware credentials and AI-assisted defense.
02
HSM & Key Infrastructure
Hardware and software-based key protection, lifecycle management and cryptographic service infrastructure.
03
Root CA & PKI
Trust anchors and certificate infrastructure for enterprise, public-sector and next-generation digital identity systems.
04
PQC Secure Network
Secure inter-office, remote-work and overseas communications with a migration path from existing cryptographic systems.
05
PQC USB Token
Hardware credential architecture for private-key protection, signing and secure authentication.
06
AI Security
Security controls for AI applications and agents, including access control, data protection, anomaly detection and audit.
03 / Cryptographic Core
TONG
Soft HSM Architecture.
TONG is positioned as YYC's software cryptographic security layer, connecting protected key operations with wallet, blockchain and application services.
Application / APIWallet · Payment · Security
TONG Soft HSMProtected Cryptographic Service
Key / Seed ProtectionIsolation · Lifecycle · Policy
Blockchain SigningSolana · Tron · EVM
Secure InfrastructureIPC · Linux · Network Security
04 / Digital Assets
Digital Assets Built on Trust.
Wallet, custody and stablecoin settlement infrastructure designed around protected keys, transaction policy and multi-chain connectivity.
FiatUSD · PHP · KRW
→
StablecoinUSDT · USDC
→
YYC Trust LayerHSM · TONG · Policy
WalletMulti-chain
→
SettlementTransfer · Swap
→
InstitutionMerchant · OTC · Fintech
YYC's role is the technology trust layer: protected key operations, wallet infrastructure, transaction controls and digital-asset connectivity.
05 / Applied Smart Platform
EchoQR
Trust Meets Everyday Commerce.
A practical O2O platform applying YYC's engineering capabilities to restaurants, attendance, coupons, receipts, menus and operational data.
QR Attendance
QR-based employee check-in and attendance management.
Meal & Credit Ledger
Meal tickets, credit management and usage records.
Receipt OCR
Receipt registration and food-material cost analysis.
Digital Menu
QR business-card and menu access for customers.
YYC / Digital Trust Infrastructure
The Future Needs a New Trust Layer.
From quantum-safe cryptography and protected keys to AI security, digital assets and smart commerce, YYC builds the infrastructure that allows digital systems to operate with verifiable trust.