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44 lines
1.5 KiB
Python
Executable File
44 lines
1.5 KiB
Python
Executable File
from Crypto.Cipher import AES
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from Crypto.Util.Padding import pad, unpad
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import base64
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import hashlib
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# SIMPLE CRYPT - requeres C compiler -------------------------------------------------------------------------
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# def prepare_key(encryption_key):
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# if len(encryption_key) < 32:
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# encryption_key = (encryption_key * ((32 // len(encryption_key)) + 1))[:32]
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# return encryption_key
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# def encrypt_data(data, encryption_key):
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# key = prepare_key(encryption_key)
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# encrypted_data = encrypt(key, data)
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# return encrypted_data
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# def decrypt_data(data, encryption_key):
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# key = prepare_key(encryption_key)
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# decrypted_data = decrypt(key, data).decode('utf-8')
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# return decrypted_data
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# pycryptodome -------------------------------------------------------------------------
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def prepare_key(encryption_key):
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key = hashlib.sha256(encryption_key.encode()).digest()
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return key
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def encrypt_data(data, encryption_key):
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key = prepare_key(encryption_key)
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cipher = AES.new(key, AES.MODE_CBC)
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ct_bytes = cipher.encrypt(pad(data.encode('utf-8'), AES.block_size))
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iv = base64.b64encode(cipher.iv).decode('utf-8')
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ct = base64.b64encode(ct_bytes).decode('utf-8')
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return iv + ct
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def decrypt_data(data, encryption_key):
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key = prepare_key(encryption_key)
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iv = base64.b64decode(data[:24])
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ct = base64.b64decode(data[24:])
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cipher = AES.new(key, AES.MODE_CBC, iv)
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pt = unpad(cipher.decrypt(ct), AES.block_size)
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return pt.decode('utf-8') |