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Open-source PureBasic implementation of the Shamir Secret Sharing
...This implementation operates over the finite field GF(257), allowing correct handling of all byte values (0–255) without loss, making it compatible with any type of string or binary-compatible data.
Main Features
Complete implementation of Shamir Secret Sharing
Arithmetic over GF(257)
Compatible with all character strings
Robust Lagrange interpolation
Safe modular inverse computation
Shares encoded in hexadecimal (3 characters per byte)
Clear, well-commented source code
⚠️ Disclaimer
This project is intended for educational and demonstration
The hash latch generates keys in a manner similar to how some cryptocurrencies are mined. It takes a string and brute-forces a prefix for it so that the hash of the string with the prefix has a certain number of leading zeroes.
But that alone would've been too easy to hack.
To prevent an attacker from forging the keys by generating a new prefix: the hash latch doesn't output the keys in the plaintext. Instead, it encrypts the key and outputs the ciphertext.
NAC is a collection of tools for cryptography. The goal is to provide simple-to-use crypto tools (like an OTP, String and number generator, public key algorithm...) you can use under Linux, Windows...