fix(cli): Downgrade minisign to 0.7.3 once again (#8838)

* fix(cli): Downgrade minisign to 0.7.3 once again

* add tests

* add change file

---------

Co-authored-by: Lucas Nogueira <lucas@tauri.app>

Author: FabianLars

.changes/downgrade-minisign.md

@@ -0,0 +1,6 @@
+---
+"tauri-cli": patch:bug
+"@tauri-apps/cli": patch:bug
+---
+
+Downgrade minisign dependency fixing updater signing key bug and prevent it from happening in the future.

tooling/cli/Cargo.lock

@@ -65,7 +65,7 @@ toml = "0.8"
 jsonschema = "0.17"
 handlebars = "5.0"
 include_dir = "0.7"
-minisign = "=0.7.5"
+minisign = "=0.7.3"
 base64 = "0.21.5"
 ureq = { version = "2.8", default-features = false, features = [ "gzip" ] }
 os_info = "3"

tooling/cli/Cargo.toml

@@ -160,3 +160,19 @@ where
     .map_err(|e| minisign::PError::new(minisign::ErrorKind::Io, e))?;
   Ok(BufReader::new(file))
 }
+
+#[cfg(test)]
+mod tests {
+  const PRIVATE_KEY: &str = "dW50cnVzdGVkIGNvbW1lbnQ6IHJzaWduIGVuY3J5cHRlZCBzZWNyZXQga2V5ClJXUlRZMEl5dkpDN09RZm5GeVAzc2RuYlNzWVVJelJRQnNIV2JUcGVXZUplWXZXYXpqUUFBQkFBQUFBQUFBQUFBQUlBQUFBQTZrN2RnWGh5dURxSzZiL1ZQSDdNcktiaHRxczQwMXdQelRHbjRNcGVlY1BLMTBxR2dpa3I3dDE1UTVDRDE4MXR4WlQwa1BQaXdxKy9UU2J2QmVSNXhOQWFDeG1GSVllbUNpTGJQRkhhTnROR3I5RmdUZi90OGtvaGhJS1ZTcjdZU0NyYzhQWlQ5cGM9Cg==";
+
+  // we use minisign=0.7.3 to prevent a breaking change
+  #[test]
+  fn empty_password_is_valid() {
+    let path = std::env::temp_dir().join("minisign-password-text.txt");
+    std::fs::write(&path, b"TAURI").expect("failed to write test file");
+
+    let secret_key =
+      super::secret_key(PRIVATE_KEY, Some("".into())).expect("failed to resolve secret key");
+    super::sign_file(&secret_key, &path).expect("failed to sign file");
+  }
+}