Chellenge 5

In [43]:

    

myinput = 'uqwqemis'


    

In [32]:

    

import hashlib

def md5hash(myinput):
    hasher = hashlib.md5()
    hasher.update(myinput.encode('utf-8'))
    return hasher.hexdigest()

def is_valid(myhash):
    lower_bound = int('0x' + '00000' + 'f'*27, 16)
    if int(myhash, 16) > lower_bound:
        return False
    else:
        return True

def password(myinput):
    i = 0
    j = 0
    pswd = ''
    while i < len(myinput):
        myhash = md5hash(myinput + str(j))
        if is_valid(myhash):
            pswd += myhash[5]
            i += 1
        j += 1
    return pswd


    

In [33]:

    

password(myinput)


    

    
Out[33]:





'1a3099aa'

In [45]:

    

def complex_password(myinput):
    i = 0
    j = 0
    pswd = [None] * len(myinput)
    while i < len(myinput):
        myhash = md5hash(myinput + str(j))
        if is_valid(myhash):
            pos = int(myhash[5], 16)
            if (pos in range(len(myinput))) and (pswd[pos] is None):
                pswd[pos] = myhash[6]
                i += 1
        j += 1
    return ''.join(pswd)


    

In [46]:

    

complex_password(myinput)


    

    
Out[46]:





'694190cd'

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