def request_commit(self, quantity):
with self.mutex:
self._validate_transfer_quantity(quantity)
secret = util.b2h(os.urandom(32)) # secure random number
secret_hash = util.hash160hex(secret)
self.commits_requested.append(secret)
return quantity, secret_hash
def _validate_commit_secret_hash(self, script):
given_spend_secret_hash = get_commit_spend_secret_hash(script)
own_spend_secret_hash = util.hash160hex(self.spend_secret)
if given_spend_secret_hash != own_spend_secret_hash:
msg = "Incorrect spend secret hash: {0} != {1}"
raise ValueError(
msg.format(given_spend_secret_hash, own_spend_secret_hash))
def request_commit(self, quantity):
with self.mutex:
self._validate_transfer_quantity(quantity)
secret = util.b2h(os.urandom(32)) # secure random number
secret_hash = util.hash160hex(secret)
self.commits_requested.append(secret)
return quantity, secret_hash
def set_commit(self, rawtx, script_hex):
with self.mutex:
self._assert_open_state()
# TODO validate rawtx
# TODO validate script
# TODO validate rawtx signed by payer
# TODO check it is for the current deposit
# TODO check given script and rawtx match
# TODO check given script is commit script
script = util.h2b(script_hex)
self._validate_commit_secret_hash(script)
self._validate_commit_payee_pubkey(script)
quantity = self.control.get_quantity(rawtx)
revoke_secret_hash = get_commit_revoke_secret_hash(script)
for revoke_secret in self.commits_requested[:]:
# revoke secret hash must match as it would
# otherwise break the channels reversability
if revoke_secret_hash == util.hash160hex(revoke_secret):
# remove from requests
self.commits_requested.remove(revoke_secret)
# add to active
self._order_active()
self.commits_active.append({
"rawtx": rawtx, "script": script_hex,
"revoke_secret": revoke_secret
})
return self.get_transferred_amount()
return None
def _validate_commit_secret_hash(self, script):
given_spend_secret_hash = get_commit_spend_secret_hash(script)
own_spend_secret_hash = util.hash160hex(self.spend_secret)
if given_spend_secret_hash != own_spend_secret_hash:
msg = "Incorrect spend secret hash: {0} != {1}"
raise ValueError(msg.format(
given_spend_secret_hash, own_spend_secret_hash
))
def revoke(self, secret):
with self.mutex:
secret_hash = util.hash160hex(secret)
for commit in self.commits_active[:]:
script = util.h2b(commit["script"])
if secret_hash == get_commit_revoke_secret_hash(script):
self.commits_active.remove(commit) # remove from active
commit["revoke_secret"] = secret # save secret
self.commits_revoked.append(commit) # add to revoked
return copy.deepcopy(commit)
return None
def revoke(self, secret):
with self.mutex:
secret_hash = util.hash160hex(secret)
for commit in self.commits_active[:]:
script = util.h2b(commit["script"])
if secret_hash == get_commit_revoke_secret_hash(script):
self.commits_active.remove(commit) # remove from active
commit["revoke_secret"] = secret # save secret
self.commits_revoked.append(commit) # add to revoked
return copy.deepcopy(commit)
return None
def set_commit(self, rawtx, script_hex):
with self.mutex:
self._assert_open_state()
# TODO validate rawtx
# TODO validate script
# TODO validate rawtx signed by payer
# TODO check it is for the current deposit
# TODO check given script and rawtx match
# TODO check given script is commit script
script = util.h2b(script_hex)
self._validate_commit_secret_hash(script)
self._validate_commit_payee_pubkey(script)
quantity = self.control.get_quantity(rawtx)
revoke_secret_hash = get_commit_revoke_secret_hash(script)
for revoke_secret in self.commits_requested[:]:
# revoke secret hash must match as it would
# otherwise break the channels reversability
if revoke_secret_hash == util.hash160hex(revoke_secret):
# remove from requests
self.commits_requested.remove(revoke_secret)
# add to active
self._order_active()
self.commits_active.append({
"rawtx": rawtx,
"script": script_hex,
"revoke_secret": revoke_secret
})
return self.get_transferred_amount()
return None