...

crates/herocrypto/Cargo.toml

@@ -1,6 +1,10 @@
 [package]
 name = "herocrypto"
 version = "0.1.0"
-edition = "2024"
+edition = "2021"
 
 [dependencies]
+redis = { version = "0.24", features = ["tokio-comp"] }
+thiserror = { workspace = true }
+libcrypto = { path = "../libcrypto" }
+libcryptoa = { path = "../libcryptoa" }

crates/herocrypto/src/lib.rs

@@ -1,14 +1,45 @@
-pub fn add(left: u64, right: u64) -> u64 {
-    left + right
+// In crates/herocrypto/src/lib.rs
+use redis::{Commands, RedisResult};
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+pub enum Error {
+    #[error("Redis connection error: {0}")]
+    Redis(#[from] redis::RedisError),
+    #[error("Asymmetric crypto error: {0}")]
+    Asymmetric(#[from] libcryptoa::AsymmetricCryptoError),
+    #[error("Key not found in database: {0}")]
+    KeyNotFound(String),
+    #[error("Command failed on server: {0}")]
+    CommandError(String),
 }
 
-#[cfg(test)]
-mod tests {
-    use super::*;
+pub struct HeroCrypto {
+    // e.g., using a connection manager from redis-rs
+    client: redis::Client,
+}
 
-    #[test]
-    fn it_works() {
-        let result = add(2, 2);
-        assert_eq!(result, 4);
+impl HeroCrypto {
+    pub fn new(redis_url: &str) -> Result<Self, Error> {
+        Ok(Self { client: redis::Client::open(redis_url)? })
     }
-}
+
+    // --- High-level functions to be implemented ---
+
+    /// Generates a new keypair and stores it in HeroDB under the given name.
+    pub async fn generate_keypair(&self, name: &str) -> Result<(), Error> {
+        let mut con = self.client.get_async_connection().await?;
+        let (_pub, _priv): (String, String) = redis::cmd("AGE")
+            .arg("KEYGEN")
+            .arg(name)
+            .query_async(&mut con)
+            .await?;
+        Ok(())
+    }
+
+    /// Encrypts a message using a key stored in HeroDB.
+    pub async fn encrypt_by_name(&self, key_name: &str, plaintext: &str) -> Result<String, Error> {
+        // Implementation will call 'AGE ENCRYPTNAME ...'
+        unimplemented!()
+    }
+}