# This is a program to compute TransHash for a given Transaction

# Neccessary paramters :- SignatureKey,ApiLoginId, TransId for the Transaction,Amount Transacted

# For more details regarding implementation please visit For more details please visit https://developer.authorize.net/support/hash_upgrade/?utm_campaign=19Q2%20MD5%20Hash%20EOL%20Partner&utm_medium=email&utm_source=Eloqua for implementation details.

import hashlib

import hmac

#SignatureKey is obtained from MINT interface

signatureKey="14B9609FFE2378449B3C0886046DD3B0F20DF12DEB758E48B5FFE1B5875615F0D2A50F7DDB1EAC417EBF76A1FAC374079793650AA493CE127601CB0960938E82";

transId="60115446835";

apiLogin = "5T9cRn9FK";

amount = "10.00";

textToHash="^"+apiLogin+"^"+transId+"^"+amount+"^";

def calculate_TransHashSha512(signatureKey,textToHash):

if(not signatureKey or signatureKey ==''):

raise Exception('Signature key cannot be null or empty')

if(not textToHash or textToHash ==''):

raise Exception('Signature key cannot be null or empty')

if(len(signatureKey)%2!=0 or len(signatureKey)<2):

raise Exception("Parameter cannot be odd or less than 2 characters");

sign=hmac.new(signatureKey.decode("hex"), textToHash, hashlib.sha512).hexdigest().upper()

return sign

transHashSha512=calculate_TransHashSha512(signatureKey,textToHash)

print(transHashSha512)