Create multi_sig.rs

src/security/multi_sig.rs

@@ -0,0 +1,32 @@
+use ed25519_dalek::{Keypair, Signature, Signer, Verifier};
+use std::collections::HashMap;
+
+pub struct MultiSigWallet {
+    pub threshold: u32,
+    pub public_keys: Vec<ed25519_dalek::PublicKey>,
+    pub signatures: HashMap<ed25519_dalek::PublicKey, Signature>,
+}
+
+impl MultiSigWallet {
+    pub fn new(threshold: u32, public_keys: Vec<ed25519_dalek::PublicKey>) -> Self {
+        Self {
+            threshold,
+            public_keys,
+            signatures: HashMap::new(),
+        }
+    }
+
+    pub fn add_signature(&mut self, public_key: ed25519_dalek::PublicKey, signature: Signature) {
+        self.signatures.insert(public_key, signature);
+    }
+
+    pub fn verify(&self, message: &[u8]) -> bool {
+        let mut valid_signatures = 0;
+        for (public_key, signature) in &self.signatures {
+            if public_key.verify(message, signature).is_ok() {
+                valid_signatures += 1;
+            }
+        }
+        valid_signatures >= self.threshold
+    }
+}