use blake3 to hash the passphrase

lib/src/lib.rs

@@ -29,6 +29,30 @@ pub extern fn litelib_wallet_exists(chain_name: *const c_char) -> bool {
 
     println!("Wallet exists: {}", config.wallet_exists());
     config.wallet_exists()
+}
+
+//////hash blake3
+
+#[no_mangle]
+pub extern fn blake3_PW(pw: *const c_char) -> *mut c_char{
+
+    let passwd = unsafe {
+        assert!(!pw.is_null());
+
+        CStr::from_ptr(pw).to_string_lossy().into_owned()
+    };
+
+    let data = passwd.as_bytes();
+// Hash an input all at once.
+let hash1 = blake3::hash(data).to_hex();
+println!("\nBlake3 Hash: {}", hash1);
+
+//let sttring = CString::new(hash1).unwrap();
+let e_str = CString::new(format!("{}", hash1)).unwrap();
+return e_str.into_raw();
+
+
+
 }
 
 /// Create a new wallet and return the seed for the newly created wallet.