diff --git a/Cargo.toml b/Cargo.toml
index c577f58..ada9482 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,4 +14,5 @@ license = "MIT"
 rust-crypto = "0.2.36"
 base64 = "0.11.0"
 urlencoding = "1.0.0"
-rust_util="0.2.0"
+rust_util="0.2.1"
+ring = "0.16.9"
diff --git a/src/lib.rs b/src/lib.rs
index 0968e66..f99ea01 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,3 +1,5 @@
 
 /// HMac Utils
 pub mod hmac;
+// RSA Utils
+pub mod rsa;
\ No newline at end of file
diff --git a/src/rsa.rs b/src/rsa.rs
new file mode 100644
index 0000000..5331121
--- /dev/null
+++ b/src/rsa.rs
@@ -0,0 +1,17 @@
+
+// use std::path::Path;
+
+// pub fn read_rsa_private_key_from_file(private_key_path: &Path) {
+//     let private_key_der = read_file(private_key_path)?;
+
+// }
+
+// fn read_file(path: &std::path::Path) -> Result<Vec<u8>, MyError> {
+//     use std::io::Read;
+
+//     let mut file = std::fs::File::open(path).map_err(|e| MyError::IO(e))?;
+//     let mut contents: Vec<u8> = Vec::new();
+//     file.read_to_end(&mut contents).map_err(|e| MyError::IO(e))?;
+//     Ok(contents)
+// }
+