diff --git a/src/pbocfunc.py b/src/pbocfunc.py
new file mode 100644
index 0000000..f21bf37
--- /dev/null
+++ b/src/pbocfunc.py
@@ -0,0 +1,131 @@
+#! /usr/bin/env python
+# vim: tabstop=4
+
+import pyDes, codecs
+
+
+
+def desencrypt(key, data, m=pyDes.ECB):
+    k = pyDes.des(key, pad=None, padmode=pyDes.PAD_NORMAL, mode=m)
+    return k.encrypt(data) 
+    
+def desdecrypt(key, data, m=pyDes.ECB):
+    k = pyDes.des(key, pad=None, padmode=pyDes.PAD_NORMAL, mode=m)
+    return k.decrypt(data) 
+
+def tripledesencrypt(key, data, m=pyDes.ECB):
+    k = pyDes.triple_des(key, pad=None, padmode=pyDes.PAD_NORMAL, mode=m)
+    return k.encrypt(data)
+    
+def tripledesdecrypt(key, data, m=pyDes.ECB):
+    k = pyDes.triple_des(key, pad=None, padmode=pyDes.PAD_NORMAL, mode=m)
+    return k.decrypt(data)
+
+
+def desencrypthex(key, data):
+    k = pyDes.des(codecs.decode(key, 'hex'), pad=None, padmode=pyDes.PAD_NORMAL)
+    e = k.encrypt(codecs.decode(data, 'hex')) 
+    return codecs.encode(e, 'hex')
+
+def tripledesencrypthex(key, data):
+    k = pyDes.triple_des(codecs.decode(key, 'hex'), pad=None, padmode=pyDes.PAD_NORMAL)
+    e1 = k.encrypt(codecs.decode(data, 'hex'))
+    return codecs.encode(e1, 'hex')
+
+def DataNot(data):
+    r = ''
+    for a in data:
+        r = r + chr((~ord(a)) & 0xFF)
+    return r
+        
+def PadCardPhyNo(phyno):
+    r = ''
+    if len(phyno) < 8:
+        pad = "\x80\x00\x00\x00\x00\x00\x00\x00"
+        l = 8 - len(phyno)
+        r = phyno + pad[:l]
+    elif len(phyno) == 8:
+        r = phyno
+    else:
+        r = phyno[:8]
+    return r
+    
+def PadCardPhyNoHex(phyno):
+    return codecs.encode(PadCardPhyNo(codecs.decode(phyno, 'hex')), 'hex')
+    
+def PbocDeliveryKey(factor, key):
+    cipherdatanot = ''
+    cipherdata = PadCardPhyNo(factor)
+    
+    print "factor is [%s]" % codecs.encode(cipherdata, 'hex')
+
+    if len(key) == 8: # singledes delivery
+        k1 = desencrypt(key, cipherdata)
+        return k1
+    elif len(key) == 16:
+        cipherdatanot = DataNot(cipherdata)
+        
+        k1 = tripledesencrypt(key, cipherdata)
+        k2 = tripledesencrypt(key, cipherdatanot)
+        
+        return k1 + k2
+    else:
+        raise ValueError('key length error')
+    
+def PbocDeliveryKeyHex(factor, key):
+    f = codecs.decode(factor, 'hex')
+    k = codecs.decode(key, 'hex')
+    k1 = PbocDeliveryKey(f, k)
+    return codecs.encode(k1, 'hex')
+   
+
+def CalcMac3DES(data, initdata, key):
+    datalen = len(data)
+    k = pyDes.des(key[:8], pad=None, padmode=pyDes.PAD_NORMAL)
+
+    for i in range(datalen / 8):
+        m = ""
+        for j in range(len(initdata)):
+            m = m + chr(ord(initdata[j]) ^ ord(data[i * 8 + j]))
+
+        initdata = m
+        x = k.encrypt(initdata)
+        initdata = x
+
+
+    k1 = pyDes.des(key[8:], pad=None, padmode=pyDes.PAD_NORMAL)
+    n = k1.decrypt(initdata)
+    initdata = k.encrypt(n)
+    return initdata
+    
+def CalcMac3DESHex(data, initdata, key):
+    d = codecs.decode(data, 'hex')
+    id = codecs.decode(initdata, 'hex')
+    k = codecs.decode(key, 'hex')
+    k1 = CalcMac3DES(d, id, k)
+    return codecs.encode(k1, 'hex')
+    
+def CalcMacDES(data, initdata, key):
+    datalen = len(data)
+    k = pyDes.des(key, pad=None, padmode=pyDes.PAD_NORMAL)
+    
+    for i in range(datalen / 8):
+        m = ""
+        for j in range(len(initdata)):
+            m = m + chr(ord(initdata[j]) ^ ord(data[i * 8 + j]))
+
+        initdata = m
+        x = k.encrypt(initdata)
+        initdata = x
+        
+    return initdata
+        
+def CalcMacDESHex(data, initdata, key):
+    d = codecs.decode(data, 'hex')
+    id = codecs.decode(initdata, 'hex')
+    k = codecs.decode(key, 'hex')
+    k1 = CalcMacDES(d, id, k)
+    return codecs.encode(k1, 'hex')
+    
+
+