anya-core 1.2.0

// Security Manager Implementation for Anya Core HSM
use std::collections::HashMap;
use std::error::Error;
use std::sync::{Arc, Mutex, RwLock};

use crate::security::hsm::HsmManager;
use crate::AnyaResult;
use bitcoin::{Txid, XOnlyPublicKey};
use secp256k1::ecdsa::Signature;

/// Security Manager for cryptographic operations
pub struct SecurityManager {
    /// User activation status - operations require explicit activation
    activation_status: RwLock<bool>,
    /// Key cache for performance optimization
    key_cache: Mutex<HashMap<String, Vec<u8>>>,
}

impl SecurityManager {
    /// Create a new security manager with HSM integration
    pub fn new(_hsm: Arc<HsmManager>) -> Self {
        Self {
            activation_status: RwLock::new(false),
            key_cache: Mutex::new(HashMap::new()),
        }
    }

    /// Enable security operations - requires explicit user activation
    pub fn enable(&self) -> AnyaResult<bool> {
        let mut status = self.activation_status.write().unwrap();
        *status = true;
        Ok(true)
    }

    /// Disable security operations
    pub fn disable(&self) -> AnyaResult<bool> {
        let mut status = self.activation_status.write().unwrap();
        *status = false;
        Ok(false)
    }

    /// Check if security operations are enabled
    pub fn is_enabled(&self) -> bool {
        *self.activation_status.read().unwrap()
    }

    /// Sign data with partial signature for repudiation
    pub async fn sign_repudiation(
        &self,
        txid: &Txid,
        _nonce: &[u8; 32],
    ) -> Result<Signature, Box<dyn Error>> {
        if !self.is_enabled() {
            return Err("Security operations are disabled. Enable them first.".into());
        }

        // This would actually use the HSM to create a partial signature
        // For now, we'll create a placeholder signature
        use bitcoin::hashes::Hash;
        let secp = secp256k1::Secp256k1::new();
        let secret_key = secp256k1::SecretKey::from_slice(&[42; 32])?;
        let txid_bytes = txid.as_byte_array();
        let message = secp256k1::Message::from_digest_slice(txid_bytes)?;

        Ok(secp.sign_ecdsa(&message, &secret_key))
    }

    /// Generate a key pair in the HSM
    pub async fn generate_key(&self, key_name: &str) -> Result<XOnlyPublicKey, Box<dyn Error>> {
        if !self.is_enabled() {
            return Err("Security operations are disabled. Enable them first.".into());
        }

        // This would use the HSM to generate a key
        // For now, we'll create a placeholder key
        let secp = secp256k1::Secp256k1::new();
        let secret_key = secp256k1::SecretKey::from_slice(&[42; 32])?;
        let public_key = secp256k1::PublicKey::from_secret_key(&secp, &secret_key);
        let (xonly, _parity) = public_key.x_only_public_key();

        // Convert secp256k1::XOnlyPublicKey to bitcoin::XOnlyPublicKey
        let xonly_serialized = xonly.serialize();
        let bitcoin_xonly = XOnlyPublicKey::from_slice(&xonly_serialized)?;

        // Cache the key name
        let mut cache = self.key_cache.lock().unwrap();
        cache.insert(key_name.to_string(), xonly_serialized.to_vec());

        Ok(bitcoin_xonly)
    }

    // This function is implemented in the parent module (src/security/hsm/mod.rs)
}