Shamir's Secret Sharing

Shamir's Secret Sharing is a method to securely distribute a secret—like a password or key—among multiple people. The secret is divided into parts, called shares, and each person gets one. To reconstruct the original secret, a minimum number of shares, known as the threshold, must be combined. This way, no individual share reveals the secret alone, enhancing security. It’s commonly used for protecting sensitive data, ensuring that only a group working together can access the information, while individual shares remain meaningless on their own.