refactor: optimize the unseal api of RustyVault

Author: wa5i

src/lib.rs

@@ -148,8 +148,14 @@ impl RustyVault {
         self.core.load().init(seal_config)
     }
 
-    pub fn unseal(&self, key: &[u8]) -> Result<bool, RvError> {
-        self.core.load().unseal(key)
+    pub fn unseal(&self, keys: &[&[u8]]) -> Result<bool, RvError> {
+        for key in keys.iter() {
+            if self.core.load().unseal(key)? {
+                return Ok(true);
+            }
+        }
+
+        Ok(false)
     }
 
     pub fn seal(&self) -> Result<(), RvError> {