Python bindings for the ellipticSecure PKCS11 shared library
Project description
python-libehsm is a Python wrapper for the ellipticSecure PKCS11 shared library
Note that while the wrapper does export some PKCS#11 helper functions it does so only partially - there are other wrappers available to interface with PKCS#11.
The focus of this wrapper is to export the BIP32/Bitcoin specific functions.
Installation
Download and install the native shared library for your platform here: https://ellipticsecure.com/downloads/
pip install python-libehsm
Example
Signing a transaction hash with a BIP32 (Bitcoin etc.) derived key stored on a MIRkey or eHSM device:
import ehsm
mirkey = ehsm.load_ehsm()
# Get the available device slots
slots = mirkey.enumerate_slots()
if len(slots) > 0:
# Use the first available slot
slot = slots[0]
# Initialize the library
mirkey.init()
try:
session = mirkey.get_logged_in_rw_session(slot, b"testsu")
found = mirkey.bip32_has_root_key(session)
if found:
hash = bytes(32)
# list of integers representing a bip32 path to the derived key
#
# ie. this is "m/0", "m" would be []
indexes = [0]
sig = mirkey.bip32_sign_data(session, hash, indexes)
finally:
mirkey.finalize()
else:
print "No devices found"
Please see the test cases for more usage examples.
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