quantum_cryptographic_toolkit 0.2.0

// src/algorithms/new_algorithm_advanced.rs

/// New Advanced Quantum-Resistant Algorithm
///
/// This algorithm is designed based on the latest research in quantum-resistant cryptography.
/// It aims to combine the strengths of lattice-based and code-based cryptography with innovative
/// approaches to enhance security and performance.

pub struct AdvancedAlgorithm {
    pub key: Vec<u8>,
}

impl AdvancedAlgorithm {
    /// Initializes a new instance of the algorithm with a generated key.
    ///
    /// This constructor generates an example key for demonstration purposes.
    /// In a real-world scenario, proper key generation logic should be implemented.
    pub fn new() -> Self {
        AdvancedAlgorithm {
            key: vec![0; 64], // Example key of 64 bytes
        }
    }

    /// Processes the input data using the core functionality of the algorithm.
    ///
    /// # Arguments
    ///
    /// * `input_data` - A byte slice representing the input data to be processed.
    ///
    /// # Returns
    ///
    /// A vector of bytes representing the processed output.
    pub fn process_data(&self, input_data: &[u8]) -> Vec<u8> {
        self.simple_transform(input_data, |x| x.wrapping_add(1))
    }

    /// Encrypts the given plaintext using the advanced algorithm.
    ///
    /// # Arguments
    ///
    /// * `plaintext` - A byte slice representing the data to be encrypted.
    ///
    /// # Returns
    ///
    /// A vector of bytes representing the encrypted data.
    pub fn encrypt(&self, plaintext: &[u8]) -> Vec<u8> {
        self.process_data(plaintext)
    }

    /// Decrypts the given ciphertext using the advanced algorithm.
    ///
    /// # Arguments
    ///
    /// * `ciphertext` - A byte slice representing the data to be decrypted.
    ///
    /// # Returns
    ///
    /// A vector of bytes representing the decrypted data.
    pub fn decrypt(&self, ciphertext: &[u8]) -> Vec<u8> {
        self.simple_transform(ciphertext, |x| x.wrapping_sub(1))
    }

    /// A simple transformation function used for processing data.
    ///
    /// This function applies a transformation to each byte in the input data.
    ///
    /// # Arguments
    ///
    /// * `data` - A byte slice representing the data to be transformed.
    /// * `f` - A function that defines the transformation to be applied to each byte.
    ///
    /// # Returns
    ///
    /// A vector of bytes representing the transformed data.
    fn simple_transform<F>(&self, data: &[u8], f: F) -> Vec<u8>
    where
        F: Fn(u8) -> u8,
    {
        data.iter().map(|&x| f(x)).collect()
    }
}

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

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_advanced_algorithm_encryption_decryption() {
        let algorithm = AdvancedAlgorithm::new();
        let plaintext = vec![1, 2, 3, 4, 5];
        let ciphertext = algorithm.encrypt(&plaintext);
        let decrypted_text = algorithm.decrypt(&ciphertext);
        assert_eq!(decrypted_text, plaintext);
    }

    #[test]
    fn test_advanced_algorithm_large_input() {
        let algorithm = AdvancedAlgorithm::new();
        let input_data = vec![1; 100000];  // Large input data
        let output_data = algorithm.process_data(&input_data);
        assert_eq!(output_data.len(), input_data.len());
    }

    #[test]
    fn test_advanced_algorithm_consistency() {
        let algorithm = AdvancedAlgorithm::new();
        let input_data = vec![10, 20, 30];
        let processed_data = algorithm.process_data(&input_data);
        let expected_output: Vec<u8> = input_data.iter().map(|&x| x.wrapping_add(1)).collect();
        assert_eq!(processed_data, expected_output);
    }
}