ECHOLOCK

Dead Man's Switch
Cryptographic
Distributed
Censorship-Resistant

CRYPTOGRAPHIC LAYERS

1. AES-256-GCM

Military-grade authenticated encryption

2. SHAMIR SECRET SHARING

3-of-5 fragments · No single point of failure

3. HMAC AUTHENTICATION

Tamper detection · Cryptographic signatures

4. PBKDF2 KEY DERIVATION

600,000 iterations · Brute-force resistant

5. NOSTR PROTOCOL

10+ relays worldwide · Decentralized distribution

RELAY NETWORK

RELAY 1

USA

RELAY 2

Europe

RELAY 3

Asia

RELAY 4

Canada

RELAY 5

USA

RELAY 6

Europe

RELAY 7

Asia

RELAY 8

USA

RELAY 9

Europe

RELAY 10

Asia

ANY 3 RELAYS = MESSAGE RECOVERY
7 RELAYS CAN FAIL · SYSTEM STILL WORKS

HOW IT WORKS

1. SETUP

Write message
Set interval
Add recipients
Choose password

2. ENCRYPT

Encrypt message
Split into fragments
Add authentication
Distribute to relays

3. MONITOR

Check in regularly
Reset timer
System watches
Countdown runs

4. TRIGGER

Timer expires
Retrieve fragments
Reconstruct key
Deliver message

THREATS MITIGATED

Relay compromise

Government data demands

Rainbow table attacks

Man-in-the-middle

Server compromise

Weak passwords

Relay offline

Censorship attempts

USE CASES

Emergency contacts

Access credentials

Medical information

Source protection

Insurance files

Digital will

Crypto wallet keys

Protest safety

Travel security

Status: Production Ready

Cryptographic Core

Nostr Integration

Security Features

Session Management