RSA algorithm not working

def gcd(a, b):
    if b > a:
        if b % a == 0:
            return a
        else:
            return gcd(b % a, a)
    else:
        if a % b == 0:
            return b
        else:
            return gcd(b, a % b)

def find_d(phi_n,e):
    k = 1
    mod0 = False
    while not mod0:
        d = (k*phi_n+1)/e
        if(d % 1 == 0):
            return d
        k+=1

def find_e(phi_n):
    e = 3
    while True:
        if not gcd(e,phi_n) == 1:
            e+=2
        else:
            return e

def generate_keys(p1,p2):
    n = p1*p2
    phi_n = (p1-1)*(p2-1)
    e = find_e(phi_n)
    d = int(find_d(phi_n,e))
    return ((e,n),(d,n))

def endecrypt(key,m):
    return pow(m,key[0],key[1])