808bits

tools

Small, self-contained instruments for inspecting cryptographic systems. Everything runs in your browser and nothing you enter leaves the page.

  1. t02 2026-09-01 TPM 2.0 playground A real TPM 2.0 command interface in your browser: the Microsoft reference implementation compiled to WebAssembly. Send commands, read every annotated byte, seal a secret to a boot state and watch tampering destroy it. No server.
  2. t01 2026-08-20 Raw transaction decoder Paste a raw transaction from Bitcoin, Ethereum, Solana, Cosmos, NEAR, Tron, TON, Cardano, Sui or Tezos and see every byte named: scripts disassembled, addresses derived, senders recovered from signatures. Zig compiled to WebAssembly, no server.