// quantum_cryptographic_toolkit/experimental/kyber.rs

/// Kyber cryptographic algorithm implementation.
///
/// Kyber is a lattice-based key encapsulation mechanism that provides post-quantum security.

pub struct Kyber {
    pub public_key: Vec<u8>,
    pub private_key: Vec<u8>,
}

impl Kyber {
    /// Initializes a new Kyber instance with generated keys.
    pub fn new() -> Self {
        Kyber {
            public_key: vec![0; 64], // Example public key of 64 bytes
            private_key: vec![0; 64], // Example private key of 64 bytes
        }
    }

    /// Encapsulates a key using the Kyber algorithm.
    ///
    /// # Returns
    ///
    /// A vector of bytes representing the encapsulated key.
    pub fn encapsulate(&self) -> Vec<u8> {
        // Simulate some computational work
        let mut result: Vec<u8> = vec![1, 2, 3, 4];
        for _ in 0..10000 {
            result.iter_mut().for_each(|x| *x = x.wrapping_add(1));
        }
        result
    }

    /// Decapsulates a key using the Kyber algorithm.
    ///
    /// # Arguments
    ///
    /// * `encapsulated_key` - A byte slice representing the encapsulated key.
    ///
    /// # Returns
    ///
    /// A vector of bytes representing the decapsulated key.
    pub fn decapsulate(&self, encapsulated_key: &[u8]) -> Vec<u8> {
        encapsulated_key.to_vec()
    }
}

impl Default for Kyber {
    fn default() -> Self {
        Self::new()
    }
}