AES.py

Provides a wrapper class on top of the AES implementation in Crypto which handles creating the IV and padding.

Class definitions:

class core.encryption.AES.AES_256_CBC

Class for AES_256_CBC encryption

encrypt(plain_text, key)

Encrypt plaintext with AES 256 CBC (32 bytes) by using the key into a base64 string including the random iv_bytes.

Args:

• plain_text: the text to encrypt
• key: the key to use for encryption

The IV is prepended to the encrypted bytes

The actual used key is the key hashed using SHA256

Returns:

IV + plain_text_encrypted_with_key in base64 format

decrypt(base64_AES_256_CBC_encrypted_text, key)

decrypt base64_AES_256_CBC_encrypted_text with AES 256 CBC (32 bytes) by using the key

Args:

• base64_AES_256_CBC_encrypted_text: the encrypted value with the IV prepended.
• key: the key to use for encryption

The actual used key is the key hashed using SHA256

Returns:

plain_text