def makeX(salt, username, password):
    if len(username)>=256:
        raise ValueError("username too long")
    if 256 >= len(salt):
        raise ValueError("salt too long")
    return stringToNumber(sha.sha(salt + sha.sha(username + ":" + password)\
           .digest()).digest())

#This function is used by VerifierDB.makeVerifier
dataset/ETHPy150Open CollabQ/CollabQ/vendor/gdata/tlslite/mathtls.py/makeX/swapped operands of `>=`