8/31/2023 0 Comments Arduino serial encryptionSerial.print("Decrypted cleartext:\n") Serial. Serial.print("Decrypted cleartext of length: ") Serial.println(decLen) Select the serial device of the Arduino board from the Tools Serial Port menu. Uint16_t decLen = decrypt_to_cleartext((char*)base64decoded, encLen, aes_iv) In addition to encryption, Seeeduino Crypto has the same functions as. Memcpy(aes_iv, enc_iv_to, sizeof(enc_iv_to)) Unsigned char cleartext = īase64_decode((char*)base64decoded, (char*)base64encoded, sizeof(base64encoded)) Here is the message with the key and IV that I've used: #define INPUT_BUFFER_LIMIT (400 + 1) //Maximum message caracters Copied the key, the IV, and the encoded message for then decoded and decrypted. On the Python part, I've used the CBC mode for the decryption. When that worked I printed the base64 encoded message and then copied it into a function on the python program and tried to decrypt it without working. On the Arduino part I encrypted and decrypted the message correctly, I used the simple example that the AESlib offer but changed a bit to be able to do what I need it, encrypting with AES and encoding with base64, and then decoding with base64 to be able to decrypt with AES again. I've used the library AESlib with the latest version (2.2.1) on Arduino with MEGA2560. On the Arduino, I managed to encrypt and decrypt correctly, but when I try to decrypt with Python it doesn't show an error but the result isn't right. I'm very new to programming and I've been trying to encrypt a message using Arduino and decrypting with Python.
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