如何为我制作的此加密 function 解密 function？

Question

I have this encrypt function:

def encrypt(password):
    for i in (password):
          not_Encrpyted = ''.join(dict_Chiper[i] for i in password)
          Encrpyted = ''.join(reversed(not_Encrpyted))
return Encrpyted

Basically, the dict I have for this function consists of 12 random chars, for example the letter 'a' will be replaced by in 'nqwv62d...' until 12 chars. I have tried making the function but it doesn't work.

The way to dechiper it in my mind is to split it at 12 chars and then reverse it again and find it in dict_Dechiper I made. This is the dict. I don't know if it's wrong or not. Do correct me if this is wrong.

dict_Dechiper = {v: k for k, v in dict_Chiper.items()}

Please help me make this program. Any help is appreciated: Thank you in advance! :)

EDIT: I deleted the line under def function and it works. Thanks for the pythonic notice to azro!

Answer 1

ENCRYPT : Firstly you encrypt method does X times the same thing (X is the len of password), for each letter you compute the whole encrypted result, you don't need to, just for each letter get the value from dict_cipher

def encrypt(password):
    encrypted = ''
    for i in password:
        encrypted += dict_cipher[i]
    return "".join(reversed(encrypted))

DECRYPT as the last operation of encrypt is reversing, here it should be the first, then read each bloc of 12 and find the letter in dict_decipher

def decrypt(encrypted):
    decrypted = ''
    encrypted = "".join(reversed(encrypted))
    for i in range(0, len(encrypted), 12):
        part = encrypted[i:i + 12]
        decrypted += dict_decipher[part]
    return decrypted

---

With a demo

# Fill both dicts
for a in (ascii_letters + digits):
    dict_cipher[a] = "".join(sample(ascii_letters + digits, 12))
dict_decipher = {v: k for k, v in dict_cipher.items()}

print(dict_cipher)    # {'a': 'eBx8zu62KPGi',   'b': '2ofrIamwV7XJ',   'c': '01PJWsiIqajl',   ...
print(dict_decipher)  # {'eBx8zu62KPGi': 'a',   '2ofrIamwV7XJ': 'b',   '01PJWsiIqajl': 'c',   ...

value = "abc"
ee = encrypt(value)
print(ee)  # ljaqIisWJP10JX7VwmaIrfo2iGPK26uz8xBe

dd = decrypt(ee)
print(dd)  # abc