commit f7859c041e68c545781cf3a5c6db5bf5e206d6a6
parent eebabdf20959945181dacb2c8cec9eb154ac57d6
Author: Neil Booth <kyuupichan@gmail.com>
Date: Tue, 19 Jan 2016 22:00:16 +0900
Support Casascius minikeys
Diffstat:
2 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/RELEASE-NOTES b/RELEASE-NOTES
@@ -6,6 +6,8 @@
experimental feature. Enable it by setting the Coin Selection
preference to Privacy.
* the install wizard has been rewritten and improved
+ * support minikeys as used in Casascius coins for private key import
+ and sweeping
# Release 2.5.4
* increase MIN_RELAY_TX_FEE to avoid dust transactions
diff --git a/lib/bitcoin.py b/lib/bitcoin.py
@@ -312,6 +312,8 @@ def ASecretToSecret(key, addrtype=0):
vch = DecodeBase58Check(key)
if vch and vch[0] == chr((addrtype+128)&255):
return vch[1:]
+ elif is_minikey(key):
+ return minikey_to_private_key(key)
else:
return False
@@ -378,6 +380,18 @@ def is_private_key(key):
########### end pywallet functions #######################
+def is_minikey(text):
+ # Minikeys are typically 22 or 30 characters, but this routine
+ # permits any length provided the minikey is valid. A valid
+ # minikey must begin with an 'S', be in base58, and when suffixed
+ # with '?' have its SHA256 hash begin with a zero byte. They are
+ # widely used in Casascius physical bitoins.
+ return (text and text[0] == 'S' and all(c in __b58chars for c in text)
+ and ord(sha256(text + '?')[0]) == 0)
+
+def minikey_to_private_key(text):
+ return sha256(text)
+
from ecdsa.ecdsa import curve_secp256k1, generator_secp256k1
from ecdsa.curves import SECP256k1
from ecdsa.ellipticcurve import Point
