ECDSA Signing Demo

To run this demo you must be running dfx 0.9.3 or higher, and you will have to start replica and icx-proxy manually.

First, we start replica in one terminal:

~/.cache/dfinity/versions/0.9.3/ic-starter \
    --replica-path ~/.cache/dfinity/versions/0.9.3/replica \
    --subnet-features ecdsa_signatures \
    --dkg-interval-length=20 \
    --subnet-type system \
    --create-funds-whitelist '*'

This starts replica with all states saved in a randomly created temporary directory under /tmp, everytime. If this is not what you want, please add --state-dir <state_dir> flag. Also, by default replica binds port 8080 on localhost, and you can add flag --http-port <port> to change it.

Next, in another terminal, we'll start icx-proxy to listen at port 8000 and forward request to replica at 8080.

~/.cache/dfinity/versions/0.9.3/icx-proxy \
    --fetch-root-key \
    --address 127.0.0.1:8000 \
    --replica http://localhost:8080

Finally, in a third terminal, we deploy the canister:

dfx deploy

This should build and deploy both backend and frontend canisters. If all is successful, you may point your browser to the asset canister's URL and see the frontend UI of this demo.

At the moment the build is against IC commit d004accc3904e24dddb13a11d93451523e1a8a5f because that is what dfx 0.9.3 uses. If you want to run against newer version of IC (which has changed the ECDSA API), you will need to compile and run your own replica, and also don't forget to edit the file src/ecdsa_example/Cargo.toml to pin the same version.

deploy on ic

dfx deploy --no-wallet --network ic

 dfx canister --network ic call ecdsa_example sign '(vec{0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;})'
(
  variant {
    Err = "Failed to call get_ecdsa_public_key Management canister has no method \'get_ecdsa_public_key\'"
  },
)

# after fix to newest version
dfx deploy --no-wallet --network ic

dfx canister --network ic call ecdsa_example sign '(vec{0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;})'
(
  variant {
    Err = "Failed to call get_ecdsa_public_key This API is not enabled on this subnet"
  },
)

# call bitcoin test interface
dfx canister --network ic call ecdsa_example balance     
(
  variant {
    Err = "Management canister has no method \'bitcoin_testnet_get_balance\'"
  },
)