Sovereign Authenticated Network Key-based Encrypted Transmission
“Classified. Sovereign. Unbreakable.”
MADE IN INDIA. FOR INDIA. FOR THE WORLD.
India's Indigenous Answer to WhatsApp and Telegram
WhatsApp stores your data on Meta's servers in the US. Telegram routes through servers in multiple foreign jurisdictions. Every message, every file, every call - subject to foreign law, foreign surveillance, and foreign corporate policy. SANKET is built entirely in India, hosted entirely on your infrastructure, and answerable to no foreign entity.
100% Data Sovereignty
Every byte of your data stays on Indian soil - on your own servers, under your own jurisdiction. No foreign government or corporation can access, subpoena, or intercept your communications.
Zero Foreign Dependencies
No foreign cloud services, no foreign APIs, no foreign CDNs. SANKET runs entirely on Indian infrastructure - government cloud or your own on-premise servers. Air-gapped if needed.
Complete Operational Independence
No foreign company can shut down your communications, revoke your licence, or push an update you haven't approved. You control the software, the servers, and the encryption keys.
Built and Maintained in India
Designed, engineered, and maintained by Indian engineers at Tosh Defence. Full source code available for sovereign audit. No black boxes, no offshore development, no foreign investors.
THE PROBLEM
Security forces and government agencies worldwide communicate sensitive operational information over public internet using consumer-grade apps - platforms that store data on foreign servers, have no organisational hierarchy, and provide zero audit trail for classified communications. SANKET changes that.
THE SOLUTION
What SANKET Does
SANKET is a military-grade secure messaging and information exchange platform built for defence forces, law enforcement, intelligence agencies, and any organisation that handles classified information. Every message, file, and call is end-to-end encrypted using Signal Protocol - the most cryptographically rigorous standard in the world, formally verified and used by defence forces globally.
SANKET can be hosted on your own cloud infrastructure or deployed on-premise at your facilities, ensuring complete data sovereignty under your jurisdiction. No foreign government, no foreign company, and no third party can access a single byte of your communications.
संकेत (SANKET) - Signal. Code. Indication. Covert sign. Used in military contexts for covert signals between forces. The word IS communications - warm, approachable, and unmistakably Indian.
CAPABILITIES
Key Features
End-to-End Encryption
Signal Protocol with Perfect Forward Secrecy - every message uses a fresh key. No server can decrypt your communications, ever.
Organisation Hierarchy
Role-based access built around your command structure - Commander, Officer, Viewer. Not a generic enterprise org chart.
Flash Broadcast System
Four priority tiers: FLASH / IMMEDIATE / PRIORITY / ROUTINE. Mandatory read acknowledgements for critical orders. Auto-escalation if FLASH goes unread.
Classified File Vault
AES-256-GCM encrypted file sharing with sensitivity labels (Restricted / Confidential / Secret), digital watermarking, and access revocation.
Threat Monitoring Dashboard
Real-time anomaly detection - failed logins, unusual access patterns, off-hours activity. Full tamper-evident audit log of every action.
Complete Data Sovereignty
Hosted on your own servers or government cloud. No foreign infrastructure. No foreign data flows. Fully auditable at any time.
Certification Ready
Built with security certification pathways in mind - adaptable to your country's classified communication standards and compliance requirements.
Offline-Capable
Message queue persists and syncs on reconnect - works in forward areas with intermittent connectivity.
MULTILINGUAL SUPPORT
Available in 26 Languages
Every soldier, officer, and official uses SANKET in their own language. Full interface localisation - not just translation.
हिन्दी
Hindi
বাংলা
Bengali
தமிழ்
Tamil
తెలుగు
Telugu
मराठी
Marathi
ગુજરાતી
Gujarati
ಕನ್ನಡ
Kannada
മലയാളം
Malayalam
ਪੰਜਾਬੀ
Punjabi
ଓଡ଼ିଆ
Odia
অসমীয়া
Assamese
English
English
العربية
Arabic
Français
French
Deutsch
German
Español
Spanish
Português
Portuguese
Русский
Russian
日本語
Japanese
한국어
Korean
中文
Chinese
ไทย
Thai
Tiếng Việt
Vietnamese
Türkçe
Turkish
Nederlands
Dutch
Italiano
Italian
SECURITY ARCHITECTURE
Built to Withstand Nation-State Adversaries
Every cryptographic primitive in SANKET is formally audited, compliant with DRDO SAG guidelines, and used by defence forces globally.
Key Agreement (1:1)
X3DH
Extended Triple Diffie-Hellman with ephemeral keys for Perfect Forward Secrecy
Message Ratchet
Double Ratchet
Unique encryption key generated for every single message - compromise of one reveals nothing else
Message Encryption
AES-256-GCM
Authenticated encryption - tampered messages are automatically rejected
Group Encryption
Sender Keys
Per-group encryption chain that rotates automatically when members leave
File Encryption
Double-Layer AES-256-GCM
Per-file random key + conversation key wrapping - even file names are encrypted
Key Derivation
HKDF-SHA256
Unique conversation key derived per group - following RFC 5869
Password Hashing
Argon2id
Memory-hard password hashing - winner of the Password Hashing Competition
Transport Security
TLS 1.3 Only
Certificate pinning enforced - man-in-the-middle attacks are blocked at the transport layer
Local Database Encryption
AES-256 Encrypted
Device database fully encrypted at rest with hardware-derived key material
Private Key Storage
Hardware-Backed Keychain
Private keys stored in hardware security module - never leave the secure chip
Two-Factor Authentication
TOTP (RFC 6238)
Time-based one-time passwords as a mandatory second factor
Random Number Generation
OS-Native CSPRNG
Cryptographically secure random number generation via OS hardware
Zero-Knowledge Server Design
Even with full database and storage access, the server cannot read a single message. All encryption and decryption happens exclusively on your device.
Threat Model - Who We Defend Against
Nation-State SIGINT
TLS 1.3 transport encryption plus end-to-end AES-256-GCM. Double Ratchet ensures Perfect Forward Secrecy - past messages safe even if current keys are compromised.
Compromised Server
Zero-knowledge architecture. Server stores only ciphertext blobs - no key material, no plaintext, no file metadata. Full database access reveals nothing.
Rogue CA / MITM Attack
Certificate pinning enforced at the application layer. Connections to servers with unexpected certificates are blocked before any data is transmitted.
Compromised Device
Private keys stored in hardware security module. Local database fully encrypted at rest. Tamper detection on key material integrity.
Insider Threat (Server Admin)
End-to-end encryption excludes the server from the trust boundary entirely. Admin sees encrypted blobs - same as an external attacker.
Physical Device Seizure
Hardware-backed key protection. Encrypted local database. Admin-gated device trust approval - seized devices can be revoked instantly.
Audited Cryptographic Libraries
DRDO SAG Compliance
DEPLOYMENT OPTIONS
Product Tiers
Sanket.Work
Hosted on government or private cloud. Fast deployment, no infrastructure overhead. For units needing rapid operational capability.
Sanket.OnPrem
Deployed on your own servers. Air-gap capable. Full data isolation. For facilities requiring the highest classification handling.
Sanket.Field
Phase 3Offline-first variant for forward operating bases. Works on local mesh network with zero internet.
WHY NOT A FOREIGN ALTERNATIVE?
Why SANKET?
“Your classified communications should never leave your jurisdiction. SANKET ensures they don't.”
INTEGRATION
Works With
DESIGNED FOR
Who It Serves
Proudly Made in India
Engineered in India with world-class standards. Deployable anywhere in the world. Full source code available for sovereign audit. No vendor lock-in. No foreign dependencies.
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Learn MoreReady to See SANKET in Action?
Working prototype available within 30 days. Schedule a live demo with our team tailored to your operational requirements. Anywhere in the world.