Rust wrapper: replace Lms::sigs_left() with Lms::has_sigs_left()

Fixes F-3094

Author: holtrop-wolfssl

wrapper/rust/wolfssl-wolfcrypt/src/lms.rs

@@ -545,17 +545,17 @@ impl Lms {
         Ok(sig_sz as usize)
     }
 
-    /// Return the number of signatures remaining for this key.
+    /// Return whether there are more signatures remaining for this key.
     ///
     /// Returns `Ok(true)` if at least one signature remains, `Ok(false)` if
     /// exhausted, or `Err(e)` on error. This is a conservative check only.
     ///
     /// # Returns
     ///
-    /// Returns either Ok(count) on success or Err(e) containing the wolfSSL
-    /// library error code value.
+    /// Returns either Ok(true) if any signatures remain, Ok(false) if
+    /// exhausted, or Err(e) containing the wolfSSL library error code value.
     #[cfg(lms_make_key)]
-    pub fn sigs_left(&mut self) -> Result<bool, i32> {
+    pub fn has_sigs_left(&mut self) -> Result<bool, i32> {
         let rc = unsafe { sys::wc_LmsKey_SigsLeft(&mut self.ws_key) };
         if rc < 0 {
             return Err(rc);

wrapper/rust/wolfssl-wolfcrypt/tests/test_lms.rs

@@ -350,11 +350,11 @@ fn test_export_pub_from() {
     let _ = store;
 }
 
-/// Verify that `sigs_left()` indicates signatures are available immediately
+/// Verify that `has_sigs_left()` indicates signatures are available immediately
 /// after `make_key()`.
 #[test]
 #[cfg(all(lms_make_key, random))]
-fn test_sigs_left_after_make_key() {
+fn test_has_sigs_left_after_make_key() {
     common::setup();
     let mut rng = RNG::new().expect("Error creating RNG");
     let mut store = Box::new(KeyStore { buf: [0u8; 16384] });
@@ -365,8 +365,8 @@ fn test_sigs_left_after_make_key() {
     setup_callbacks(&mut key, ctx);
     key.make_key(&mut rng).expect("Error with make_key()");
 
-    let remaining = key.sigs_left().expect("Error with sigs_left()");
-    assert!(remaining, "sigs_left must be true immediately after make_key()");
+    let remaining = key.has_sigs_left().expect("Error with has_sigs_left()");
+    assert!(remaining, "has_sigs_left must be true immediately after make_key()");
 
     let _ = store;
 }