https://github.com/z-40/microaes

https://github.com/z-40/microaes

aes cryptography python-3

Last synced: 5 months ago
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• Host: GitHub
• URL: https://github.com/z-40/microaes
• Owner: Z-40
• License: gpl-3.0
• Created: 2021-04-04T13:18:46.000Z (about 5 years ago)
• Default Branch: master
• Last Pushed: 2021-07-01T04:47:30.000Z (almost 5 years ago)
• Last Synced: 2025-02-25T02:07:47.999Z (over 1 year ago)
• Topics: aes, cryptography, python-3
• Language: Python
• Homepage:
• Size: 61.5 KB
• Stars: 1
• Watchers: 1
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

          
# MicroAES

A pure python implementation of AES (Advanced Encryption Standard) with support for 

128, 192 and 256 bit keys and CBC, CTR, CFB and OFB modes of encryption.

### Usage

    import micro_aes

    aes = micro_aes.AES(b"MyPassword", b"sAlTDaTa", 32, "sha256")

    encrypted_data = aes.encrypt(b"Send Z-40 $100", "cbc", "sha256")

    decrypted_data = aes.decrypt(encrypted_data, "cbc", "sha256")

    print(bytes.hex(encrypted_data))

    # Output: 1bbd4a183d5c633e167d50047144ab812ebfa252da1282446a33fc681513a4d63234c18c83b82796dfafebed2714ef3c047c773b050c58048a3a1ea00bbcbd0a

    print(decrypted_data)

    # Output: b'Send Z-40 $100'

### Security Overview

- Same message maps to different cipher texts

- HMAC insures the integrity of the message and prevents attacks such as padding oracle

- SCRYPT helps transform weak passwords into AES keys, HMAC keys and IV 

### Limitations

This implementation of AES is ***NOT*** Side-Channel attack resistant, however, attacks 

can be prevented by clearing memory and deleting objects after usage