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enh - added bip32 seed parsing #2

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enh - added bip32 seed parsing #2

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52 changes: 49 additions & 3 deletions src/PyBrainwallet.py
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Original file line number Diff line number Diff line change
Expand Up @@ -55,10 +55,12 @@ def __init__(self,parent,id):
# Buttons and checkboxes
self.compressCB = wx.CheckBox(panel, -1, "Compress",
(6, 522), (-1, -1))
self.bip38CB = wx.CheckBox(panel, -1, "BIP38",
self.bip32seedCB = wx.CheckBox(panel, -1, "BIP32 secret",
(106, 522), (-1, -1))
self.bip38CB = wx.CheckBox(panel, -1, "BIP38",
(212, 522), (-1, -1))
self.multihashCB = wx.CheckBox(panel, -1, "Multihash",
(182, 522), (-1, -1))
(282, 522), (-1, -1))

gen_button=wx.Button(panel,
label='Text',
Expand Down Expand Up @@ -93,6 +95,7 @@ def __init__(self,parent,id):
# Bindings
self.Bind(wx.EVT_TEXT_ENTER, self.seed_changed)
self.Bind(wx.EVT_CHECKBOX, self.set_multihash, self.multihashCB)
self.Bind(wx.EVT_CHECKBOX, self.set_bip32seed, self.bip32seedCB)
self.Bind(wx.EVT_CHECKBOX, self.set_bip38, self.bip38CB)
self.Bind(wx.EVT_CHECKBOX, self.set_compress, self.compressCB)
self.Bind(wx.EVT_BUTTON,self.generate,gen_button)
Expand Down Expand Up @@ -157,6 +160,7 @@ def __init__(self,parent,id):
self.filelast = False
self.compressed = False
self.bip38 = False
self.bip32 = False
self.tests_passed = 'Untested'

# initial keypair
Expand Down Expand Up @@ -288,6 +292,11 @@ def set_bip38(self,event):
self.encrypt_priv()
self.update_output()

def set_bip32seed(self,event):
self.bip32 = event.IsChecked()
self.seed_changed(event)
self.update_output()

def set_compress(self,event):
self.compressed = event.IsChecked()
if self.bip38: # re-encrypt, using compressed wif
Expand Down Expand Up @@ -376,12 +385,49 @@ def keypair_from_fileseed(self, filelist, filepaths):
return {'privkeywif':self.privkeywif,
'address':self.address}

def to_bytes_32(self,v):
"""
The MIT License (MIT)
Copyright (c) 2013 by Richard Kiss
"""
v = self.from_long(v, 0, 256, lambda x: x)
if len(v) > 32:
raise ValueError("input to to_bytes_32 is too large")
return ((b'\0' * 32) + v)[-32:]
return v

def from_long(self, v, prefix, base, charset):
"""
The MIT License (MIT)
Copyright (c) 2013 by Richard Kiss
"""
"""The inverse of to_long. Convert an integer to an arbitrary base.

v: the integer value to convert
prefix: the number of prefixed 0s to include
base: the new base
charset: an array indicating what printable character to use for each value.
"""
l = bytearray()
while v > 0:
try:
v, mod = divmod(v, base)
l.append(charset(mod))
except Exception:
raise ValueError("can't convert to character corresponding to ")
l.extend([charset(0)] * prefix)
l.reverse()
return bytes(l)

def determine_keys(self, seed):
if not self.seed == 'N/A':
if self.multihash:
for i in range(1,self.multihash_numrounds):
seed = sha256(seed)
self.privkey = sha256(seed)
if self.bip32:
self.privkey = binascii.hexlify(self.to_bytes_32(int(seed)))
else:
self.privkey = sha256(seed)
self.cprivkey = encode_privkey(self.privkey,'hex_compressed')
self.pubkey = privtopub(self.privkey)
self.cpubkey = encode_pubkey(self.pubkey,'hex_compressed')
Expand Down