This project provides an implementation of the Elliptic Curve Diffie-Hellman (ECDH) key exchange protocol using the secp256k1 curve, built on top of the o1js library. ECDH allows two parties to securely exchange cryptographic keys over a public channel.
Elliptic Curve Diffie-Hellman (ECDH) is a key exchange mechanism based on elliptic curve cryptography (ECC). It allows two parties, each with a public and private key pair, to establish a shared secret over an insecure channel. This shared secret can then be used to securely encrypt further communication.
The secp256k1 curve is a widely-used elliptic curve, particularly in blockchain and cryptocurrency applications such as Bitcoin & Ethereum.
There are interesting use cases such as:
| Category | Count |
|---|---|
| Total rows | 21,059 |
| RangeCheck0 | 5,448 |
| RangeCheck1 | 2,724 |
| Zero | 4,490 |
| ForeignFieldAdd | 1,460 |
| Generic | 3,939 |
| ForeignFieldMul | 798 |
| Poseidon | 2,200 |
| Task | Time |
|---|---|
| Compile | 3.316s |
| Generate ECDH keys | 1.961ms |
| Prove Alice | 22.432s |
| Prove Bob | 17.200s |
| Verify Alice | 818.308ms |
| Verify Bob | 737.852ms |
MacBook Pro M1, 8GB RAM
npm run buildnpm run test
npm run testw # watch modenpm run coveragenpm run example