DefenseTech for Cybersecurity,Post-Quantum,Disaster & Crisis

Signal Protocol · Double RatchetML-KEM-1024 · PQXDHBLE Mesh · Store-and-Forward
隐私保护通信自由

Arc 旨在创造迁移理由,而不是躲在中性措辞后面。其差异化来自后量子 E2EE、有意的消息移除、低带宽运行与 offline 灾害通信的组合。

我们的三大支柱

三大支柱。一个使命:免费、全球化的通信层。

Arc 是一款以隐私为核心的即时通讯工具,其名称源自连接人与人之间的“弧线”。

01

E2EE

端到端加密 (E2EE)

Signal Protocol · Double Ratchet

PQXDH、Double Ratchet、Sender Keys 以及明确防止 downgrade。

02

PQC

后量子密码学 (PQC)

ML-KEM-1024 · PQXDH

后量子密码使用在正确实现时,旨在抵抗能力足够的量子计算机已知攻击的算法。Arc 的目标是在混合 PQXDH 结构中采用标准 ML-KEM-1024,在增加后量子组件的同时保留经典保护。这可降低“现在收集、以后解密”的风险,但并非对所有实现、终端或未来密码分析失败的绝对保证。

03

MESH

Mesh Network

Arc-Protocol-Mesh · BLE L2CAP CoC + GATT

评估低带宽语音,并提供安全模式明确的灾害直连通信。

Arc 的灵魂 — 北极星

“人与人的桥梁 · 防御的堡垒”与“防卫级四大优化”

并非为了进攻,而是作为保护全球自由对话与安宁的“防御堡垒”与“人际桥梁”。这一灵魂(North Star)定义了防卫级高可用性与极限优化的唯一理由。

STABILITYDEFENSE-GRADE

高稳定性(Anti-DoS / 灾难弹性)

通信中断时自主中继的 BLE 离线 Mesh 网络与抵御 DoS 攻击的高鲁棒性架构。

VELOCITYDEFENSE-GRADE

极速响应(Zero Latency)

基于 Rust 原生加密核心的毫秒级密钥交换与签名验证,实现零延迟即时同步。

LIGHTNESSDEFENSE-GRADE

极致轻量(Ultra-Lightweight)

零追踪器、零冗余 SDK,将电池功耗与内存占用削减至极限的极简主义。

SECURITYDEFENSE-GRADE

超强安全性(Post-Quantum E2EE)

NIST 标准 ML-KEM-1024 后量子密码、PQXDH 与 Signal 双棘轮协议保障通信主权。

OUR CODE

价值观

Live your own story

使命

Ignite the Fire

愿景

BE A GAME CHANGER

作为创业公司

The best way to predict the future is to invent it

拖动以旋转

ATLAS ASSOCIATES' PARTNERS
Google for StartupsNVIDIA Inception ProgramMIRAISE
OUR VISION

致力于成为世界上最先进的
Defense Tech 即时通讯应用

公开工程方向的商业安全产品

Join us in shaping the future of communication.

DefenseTech

公开工程方向的商业安全产品

DisasterTech

公开工程方向的商业安全产品

OPTIMIZATION

优化标准

Every line of code we write follows four optimization principles.

Speed

We pursue speed in every aspect — page transitions, API responses, and screen rendering. No waiting, ever.

Lightweight

We eliminate unnecessary dependencies, minimizing app size and memory usage. Smooth performance even on constrained devices.

Stability

We aim for zero crashes with thorough error handling and testing. Reliable operation you can count on.

Secure

OWASP-compliant security measures built in as standard. Data protection is always our top priority.

CORE FEATURES

零妥协安全

Arc 得名于连接两点的弧线(arc)。跨越语言、距离与通讯中断,将彼此的心意安全送达。

Double Ratchet DM

PQXDH、Double Ratchet、Sender Keys 以及明确防止 downgrade。

直连 Mesh E2EE DM

评估低带宽语音,并提供安全模式明确的灾害直连通信。 评估低带宽语音,并提供安全模式明确的灾害直连通信。

IGF

通过 IGF 删除的消息会从所有设备和 Arc 的服务器上完全移除。我们的服务器从不保留任何过期数据,因此即使 Arc 也无法恢复。

Key Sync + 多设备

无需复制新设备的加密身份,即可授权一次性设备迁移。每台活跃设备都会独立生成并保护自己的身份和消息密钥。

Sealed Sender + 匿名投递

PQXDH、Double Ratchet、Sender Keys 以及明确防止 downgrade。

Passkey (WebAuthn / FIDO2) 与零知识密钥备份

采用防钓鱼一键无密码生物识别认证(Passkey / WebAuthn,配备无状态 HMAC 质询与 300 秒 TTL 上限),结合零知识密钥备份(PBKDF2-HMAC-SHA256 600,000 次迭代 + HKDF-SHA256 + AES-256-GCM)与 ML-KEM-1024 TOFU 密钥固定状态延续(单调合并保护),实现跨设备迁移的抗量子密钥无缝继承。

COMPETITIVE COMPARISON

20 Leading Messengers Competitive Benchmark

A rigorous 9-axis benchmark evaluating Signal (90/100), Arc (89/100), and 18 other global messengers across cryptography, quantum resilience, and crisis mesh.

每项第一方资料仅支持其引用所在类别,并不能证明全部主张或全部评分,也不表示厂商认可。

View Full 20-Product Benchmark →
KNOWLEDGE BASE · AIO & AEO

Core Architecture & FAQ

Authoritative answers on DefenseTech, Post-Quantum Cryptography, offline mesh, and data sovereignty.

What is Atlas Associates Inc.?▼
Atlas Associates Inc. (legal name: Atlas Associates株式会社) is a Japanese DefenseTech corporation pioneering post-quantum cybersecurity, quantum-resistant end-to-end encryption, and offline disaster-resilient communications. Founded on February 22, 2019, by Founder and CEO Takayuki Miyano, the company builds the Arc secure messenger, the local-first Mac screen recorder Atlas Helios, and sovereign communication infrastructure for high-security environments.
What makes Arc messenger unique compared to other apps?▼
Arc is the world's first defense-grade messenger combining NIST-standardized Post-Quantum Cryptography (ML-KEM-1024 / PQXDH) with the Signal Protocol Double Ratchet, alongside offline Bluetooth Low Energy (BLE) store-and-forward mesh networking. It requires no phone number for registration, operates with strict zero telemetry, and features sender-controlled Mutual Burn (Vanish-on-Read) message retirement.
Why is Post-Quantum Cryptography (PQC) essential today?▼
Adversaries and nation-state threat actors are actively conducting 'Store Now, Decrypt Later' (SNDL) attacks—intercepting and storing encrypted high-value communications today to decrypt them when quantum computers mature. Arc prevents retroactive decryption by implementing a hybrid post-quantum handshake uniting classic Curve25519 with quantum-resistant lattice-based ML-KEM-1024.
How does Arc offline mesh communication work during disasters and network outages?▼
When cellular towers, fiber networks, or internet backbones fail due to earthquakes, natural disasters, or intentional network blackouts, Arc devices automatically establish peer-to-peer Bluetooth Low Energy (BLE) connections. Encrypted messages are relayed hop-by-hop (Store-and-Forward) across nearby devices until reaching the recipient, enabling critical crisis communication with zero infrastructure.
How does Arc differ from Signal, WhatsApp, and Telegram?▼
Unlike Signal and WhatsApp, Arc does not mandate a cellular phone number, preventing SIM-swap and identity correlation. Unlike Telegram, Arc employs genuine E2EE by default on all 1:1 and group chats. Crucially, Arc provides native offline BLE mesh routing and post-quantum ML-KEM-1024 encryption, which no mainstream messenger offers.
What is Atlas Associates' privacy and data sovereignty guarantee?▼
Atlas Associates has zero advertising, zero trackers, and zero data monetization. Messages are end-to-end encrypted so server infrastructure never possesses decryption keys. Cryptographic keys remain isolated within the device's secure hardware enclave. The company adheres to a strict zero-telemetry policy and maintains absolute independence from sovereign surveillance pressures.

默认私密。人人免费。

Arc 可在 iOS、Android 和 macOS 上使用。下载应用即可使用当前版本中提供的功能。