coinbase_tss_sdk_keygen_shard_creation_and_signing.py

1import coinbase_tss_sdk
2
3def main():
4    # 1. Initialize the SDK
5    # The SDK provides access to cryptographic primitives for Threshold Signatures
6    tss = coinbase_tss_sdk.TSS()
7
8    # 2. Create a Key Generation request
9    # In a real scenario, this involves multiple parties. 
10    # Here we simulate the local initialization of a key shard.
11    try:
12        # Generate a new random seed for the shard
13        seed = tss.generate_seed()
14        print(f"Successfully generated seed: {seed.hex()[:10]}...")
15
16        # 3. Create a shard from the seed
17        # Shards are used to sign transactions without ever reconstructing the full private key
18        shard = tss.create_shard(seed)
19        print("Successfully created TSS key shard.")
20
21        # 4. Access the public key associated with the shard
22        public_key = shard.get_public_key()
23        print(f"Public Key: {public_key.hex()}")
24
25        # 5. Prepare a message to sign (usually a transaction hash)
26        message = b"hello world"
27        
28        # 6. Sign the message
29        # In MPC, this would be a multi-step process involving 'get_signature_share'
30        # and communicating with other parties/Coinbase API.
31        signature_share = shard.sign(message)
32        print(f"Generated Signature Share: {signature_share.hex()[:10]}...")
33
34    except Exception as e:
35        print(f"An error occurred: {e}")
36
37if __name__ == "__main__":
38    main()