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electrum-bitcoinprivate
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new commands: encrypt and decrypt messages

This commit is contained in:
ThomasV 2014-01-30 14:43:46 +01:00
parent ae3cb372c8
commit 631c967df9
2 changed files with 15 additions and 5 deletions
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10
lib/bitcoin.py
View File

@ -230,8 +230,7 @@ def regenerate_key(sec):
if not b:
return False
b = b[0:32]
secret = int('0x' + b.encode('hex'), 16)
return EC_KEY(secret)
return EC_KEY(b)
def GetPubKey(pubkey, compressed=False):
return i2o_ECPublicKey(pubkey, compressed)
@ -368,7 +367,8 @@ def ser_to_point(Aser):
class EC_KEY(object):
def __init__( self, secret ):
def __init__( self, k ):
secret = string_to_number(k)
self.pubkey = ecdsa.ecdsa.Public_key( generator_secp256k1, generator_secp256k1 * secret )
self.privkey = ecdsa.ecdsa.Private_key( self.pubkey, secret )
self.secret = secret
@ -557,7 +557,7 @@ def CKD(k, c, n):
import hmac
from ecdsa.util import string_to_number, number_to_string
order = generator_secp256k1.order()
keypair = EC_KEY(string_to_number(k))
keypair = EC_KEY(k)
K = GetPubKey(keypair.pubkey,True)
if n & BIP32_PRIME: # We want to make a "secret" address that can't be determined from K
@ -698,7 +698,7 @@ def test_crypto():
message = "Chancellor on brink of second bailout for banks"
enc = EC_KEY.encrypt_message(message,pubkey_c)
eck = EC_KEY(pvk)
eck = EC_KEY(number_to_string(pvk,_r))
dec = eck.decrypt_message(enc)
print "decrypted", dec

10
lib/commands.py
View File

@ -95,6 +95,8 @@ register_command('signmessage', 2,-1, False, True, True, 'Sign a mess
register_command('unfreeze', 1, 1, False, True, False, 'Unfreeze the funds at one of your wallet\'s address', 'unfreeze <address>')
register_command('validateaddress', 1, 1, False, False, False, 'Check that the address is valid', 'validateaddress <address>')
register_command('verifymessage', 3,-1, False, False, False, 'Verifies a signature', verifymessage_syntax)
register_command('encrypt', 2,-1, False, False, False, 'encrypt a message with pubkey')
register_command('decrypt', 2,-1, False, False, False, 'decrypt a message with privkey')
register_command('daemon', 1, 1, True, False, False, 'start/stop daemon')
register_command('getproof', 1, 1, True, False, False, 'start/stop daemon')
@ -390,5 +392,13 @@ class Commands:
else:
return "unknown transaction"
def encrypt(self, pubkey, message):
return EC_KEY.encrypt_message(message, pubkey.decode('hex'))
def decrypt(self, private_key, message):
eck = EC_KEY(private_key.decode('hex'))
decrypted = eck.decrypt_message(message)
return decrypted[0]