https://github.com/mithi/simple-cryptography
Scripts that illustrate basic cryptography concepts based on Coursera Standford Cryptography I course and more.
https://github.com/mithi/simple-cryptography
algorithm ciphertext coursera coursera-cryptography crypto cryptographic-algorithms cryptographic-attacks cryptography cryptography-concepts factoring factorization meet-in-the-middle meet-in-the-middle-attacks padding-oracle padding-oracle-attacks public-key-cryptography rsa-attacks stanford symmetric-encryption symmetric-key-cryptography
Last synced: 19 days ago
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Scripts that illustrate basic cryptography concepts based on Coursera Standford Cryptography I course and more.
- Host: GitHub
- URL: https://github.com/mithi/simple-cryptography
- Owner: mithi
- License: mit
- Created: 2019-03-10T15:45:04.000Z (over 6 years ago)
- Default Branch: master
- Last Pushed: 2020-07-02T12:20:23.000Z (over 5 years ago)
- Last Synced: 2025-04-05T15:04:25.474Z (7 months ago)
- Topics: algorithm, ciphertext, coursera, coursera-cryptography, crypto, cryptographic-algorithms, cryptographic-attacks, cryptography, cryptography-concepts, factoring, factorization, meet-in-the-middle, meet-in-the-middle-attacks, padding-oracle, padding-oracle-attacks, public-key-cryptography, rsa-attacks, stanford, symmetric-encryption, symmetric-key-cryptography
- Language: Python
- Homepage:
- Size: 28.2 MB
- Stars: 65
- Watchers: 6
- Forks: 12
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# [🐳](https://mithi.github.io/deep-blueberry) [☕️](https://ko-fi.com/minimithi)
# About
- Python scripts that illustrate basic cryptography concepts based on Coursera Standford Cryptography I course and more
- Each has tests, notes and detailed explanations in the hopes that you can clearly understand what's happening
- The references section of this README links to awesome websites you can use for learning cryptography
### 1. [Many Time Pad](./01-many-time-pad/)
- This script will be able to decrypt a target ciphertext, given a bunch on intercepted ciphertexts encrypted with the same key (which may or may not have random errors). A stream cipher key should never be used more than once.
### 2. [Block Ciphers](./02-block-ciphers/)
- You'll be able to encrypt or decrypt a message given a key using two modes of block cipher operations; CBC mode and CTR mode.
### 3. [Simple File Authentication System](./03-file-authentication/)
- A simple file authentication system that simulate how you'd be able to authenticate and play video chunks as they are downloaded without having to wait for the entire file.
### 4. [Padding Oracle Attack](./04-padding-oracle/)
- This script illustrates how you'd be able to decrypt an intercepted ciphertext if the receiver reveals whether a sent ciphertext is of valid format or not.
### 5. [Meet In the Middle Attack](./05-meet-in-the-middle/)
- The meet-in-the-middle attack (MITM) is a generic space–time tradeoff cryptographic attack. We demonstrate the MITM attack by using it to solve a discrete log problem.
### 6. [Factoring Challenges](./06-factoring/)
- RSA can be broken when the public modulus `N` is generated incorrectly. These scripts illustrate how you'd be able to factor `N` when `p` and `q` are close to each other.
### 7. [Basic RSA](./07-basic-rsa/)
- An example pipeline that demonstrates basic RSA encryption and decryption.
# References
- [❤️ Crypto Hack](https://cryptohack.org/)
- [Coursera Cryptography I, Stanford, Dan Boneh](https://www-origin.coursera.org/learn/crypto)
- [A Graduate Course in Applied Cryptography by Dan Boneh and Victor Shoup](https://toc.cryptobook.us/)
- [Crypto 101 by Laurens Van Houtven](https://www.crypto101.io/)
- [Crypto Pals Crypto Challenges](https://cryptopals.com/)
# [🐳](https://mithi.github.io/deep-blueberry) [☕️](https://ko-fi.com/minimithi)