Implement RSA verification (#4952)

Co-authored-by: Ernesto García <ernestognw@gmail.com>
Co-authored-by: cairo <cairoeth@protonmail.com>

test/utils/cryptography/RSA.helper.js

@@ -0,0 +1,17 @@
+const path = require('path');
+const fs = require('fs');
+
+module.exports = function* parse(file) {
+  const cache = {};
+  const data = fs.readFileSync(path.resolve(__dirname, file), 'utf8');
+  for (const line of data.split('\r\n')) {
+    const groups = line.match(/^(?<key>\w+) = (?<value>\w+)(?<extra>.*)$/)?.groups;
+    if (groups) {
+      const { key, value, extra } = groups;
+      cache[key] = value;
+      if (groups.key === 'Result') {
+        yield Object.assign({ extra: extra.trim() }, cache);
+      }
+    }
+  }
+};