print("[f] Calculate entropy")
print("[g] Perform a shift")
print("[h] Decrypt RSA with primes")
print("[i] Decrypt RSA without primes")
print("[x] Exit\n>>> ")
answer = raw_input()
if answer == 'a':
Modular_Exponent()
elif answer == 'b':
n = int(raw_input("What number do you want to factor: "))
print(Crypto.factorize(n))
elif answer == 'c':
totient()
elif answer == 'd':
x = int(raw_input("Enter your first number: "))
y = int(raw_input("Enter your second number: "))
print("The gcd is: " + str(Crypto.egcd(x,y)[0]))
elif answer == 'e':
x = int(raw_input("Enter your number: "))
y = int(raw_input("Enter your mod: "))
print("The inverse is: " + str(Crypto.modinv(x,y)))
elif answer == 'f':
Crypto.entropy()
elif answer == 'g':
Crypto.shift()
elif answer == 'h':
RSA.decryptRSA()
elif answer == 'i':
RSA.decryptRSAPrimes()
