bolos-tee

Implementation of Ledger BOLOS for TEE applications

Doxygen API available on https://ledgerhq.github.io/bolos-tee/

To be used with Ledger Trustlet application : https://play.google.com/store/apps/details?id=com.ledger.wallet.bootstrap - add your uncompressed secp256k1 public key into "Options" before purchasing (if you don't have one, read below to create one)

Presentation and tutorials

• Architecture overview
• Ethereum Hardware Wallet sample use case

Compatible TEEs

BOLOS-TEE is commercially available on Trustonic TEEs

The following handsets are recommended to develop and test BOLOS applications supporting a Trusted UI :

• Samsung Galaxy S6 (all models and variants)
• Samsung Galaxy Note 5 (all models and variants)

To develop and test BOLOS applications without a Trusted UI, most Samsung handsets starting with the Galaxy S3 should be compatible.

Other manufacturers also include Trustonic TEE. When in doubt, just install our application and find out.

SDK Docker image

• If you don't want to compile moxiebox, a pre-built Docker image is available at https://hub.docker.com/r/nbasim/moxiebox-bolos/ - it's still a good idea to sign on an isolated machine though.

Building the SDK

• Build the moxiebox cross compiler toolchain from https://github.com/jgarzik/moxiebox

• Build the signing tool from https://github.com/LedgerHQ/bolos-tee/tree/master/tools/signing (requires secp256k1 and libelf)

• Create a keypair on a trusted computer using the createKey tool - keep the private key private, and enter the public key into the "Options" menu of the Ledger Trustlet application before enabling the license

• Build the BOLOS runtime environment from https://github.com/LedgerHQ/bolos-tee/tree/master/runtime

• Build and install the Python communication library from https://github.com/LedgerHQ/bolos-tee/tree/master/client/python

Building code

• Compile your BOLOS code, preferably on a trusted computer, using the API (https://github.com/LedgerHQ/bolos-tee/tree/master/api) and runtime environment - a few examples are provided in https://github.com/LedgerHQ/bolos-tee/tree/master/samples

• Sign your code on a trusted computer (or write a BOLOS signer)

Running code

• Build and install Ledger Wallet Proxy (https://github.com/LedgerHQ/bolos-tee/tree/master/client/android) on a development phone on which Ledger Trusted is installed

• Start a Ledger Wallet Proxy session - make sure the phone is on the same network as the computer used for development

• Load and execute the code using the Python API (as an example you can refer to https://github.com/LedgerHQ/bolos-tee/blob/master/samples/ethereum/test_ethereum.py)

Contact

Please report bugs and features to hello@ledger.fr