wpa-handshake with python - hashing difficulties

Alright, I figured it out by myself... more by desperate testing and some luck, than successful research, which lead to nothing long enough. Instead of using the MAC-adresses and nonces as the strings they were, I had to unhexlify them. I used

a2b_hex() #alternatively unhexlify()

My final code looks somewhat like this, defs excluded:

import hmac,hashlib,binascii
passPhrase="10zZz10ZZzZ"
ssid        = "Netgear 2/158"
A           = "Pairwise key expansion"
APmac       = a2b_hex("001e2ae0bdd0")
Clientmac   = a2b_hex("cc08e0620bc8")
ANonce      = a2b_hex("61c9a3f5cdcdf5fae5fd760836b8008c863aa2317022c7a202434554fb38452b")
SNonce      = a2b_hex("60eff10088077f8b03a0e2fc2fc37e1fe1f30f9f7cfbcfb2826f26f3379c4318")
B           = min(APmac,Clientmac)+max(APmac,Clientmac)+min(ANonce,SNonce)+max(ANonce,SNonce)
data        = a2b_hex("0103005ffe01090020000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000")

pmk     = pbkdf2(passPhrase, ssid, 4096, 32) 
ptk     = customPRF512(pmk,A,B)
mic     = hmac.new(ptk[0:16],data)

print "desiredpmk:\t","01b809f9ab2fb5dc47984f52fb2d112e13d84ccb6b86d4a7193ec5299f851c48"
print "pmk:\t\t",b2a_hex(pmk),"\n"
print "desired ptk:\t","bf49a95f0494f44427162f38696ef8b6"
print "ptk:\t\t",b2a_hex(ptk[0:16]),"\n"
print "desired mic:\t","45282522bc6707d6a70a0317a3ed48f0"
print "mic:\t\t",mic.hexdigest(),"\n"

So the answers to my questions were: yes, hashfunctions work correctly, yes, input is formatted wrong, no, no endianess-issues.