Create base58.py

Author: s4w3d0ff

base58.py

@@ -0,0 +1,32 @@
+""" base58 encoding / decoding functions """
+ 
+alphabet = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
+base_count = len(alphabet)
+       
+def encode(num):
+    """ Returns num in a base58-encoded string """
+    encode = ''
+   
+    if (num < 0):
+        return ''
+   
+    while (num >= base_count):    
+        mod = num % base_count
+        encode = alphabet[mod] + encode
+        num = num // base_count
+ 
+    if (num):
+        encode = alphabet[num] + encode
+ 
+    return encode
+ 
+def decode(s):
+    """ Decodes the base58-encoded string s into an integer """
+    decoded = 0
+    multi = 1
+    s = s[::-1]
+    for char in s:
+        decoded += multi * alphabet.index(char)
+        multi = multi * base_count
+       
+    return decoded