This is a custom implementation of the Advanced Encryption Standard (AES) using Python. The main features of this implementation include:
- Encryption/Decryption
- 18 cycles
- 512 bit key
- No use of external libraries
- Performance measurer (timer)
This repo comes with an already included input_test.txt that you can use to test that the script is working propertly. After you've cloned the repor you can run the script by simply
To encrypt simply run
python crypt input_test.txt output.enc PASSWORD1234
and to decrpyt
python crypt -d output.enc input_test.dec PASSWORD1234
This implementation was implemented using the standard:
- FIPS PUB 197: Advanced Encryption Standard (AES) (https://nvlpubs.nist.gov/nistpubs/fips/nist.fips.197.pdf)
https://en.wikipedia.org/wiki/Finite_field_arithmetic
| Algorithm | Key Length (Nk) | Block Size (Nb) | Number Rounds (Nr) | Completed? |
|---|---|---|---|---|
| AES 128 | 4 (128 bits) | 4 blocks | 10 rounds | Yes |
| AES 192 | 6 (192 bits) | 4 blocks | 12 rounds | Not yet |
| AES 256 | 8 (256 bits) | 4 blocks | 14 rounds | Not yet |
| AES 512 | 16 (512 bits) | 4 blocks | 18 rounds ? | Not yet |