Add public interface to access BigNums from RSA keys

openssl/src/crypto/rsa.rs

@@ -0,0 +1,39 @@
+use ffi;
+use bn::BigNum;
+use std::fmt;
+
+pub struct RSA {
+    pub rsa_obj : ffi::RSA
+}
+
+impl RSA {
+    pub unsafe fn get_n(&self) -> BigNum {
+        BigNum::new_from_ffi(self.rsa_obj.n).unwrap()
+    }
+
+    pub unsafe fn get_d(&self) -> BigNum {
+        BigNum::new_from_ffi(self.rsa_obj.d).unwrap()
+    }
+
+    pub unsafe fn get_e(&self) -> BigNum {
+        BigNum::new_from_ffi(self.rsa_obj.e).unwrap()
+    }
+
+    pub unsafe fn get_p(&self) -> BigNum {
+        BigNum::new_from_ffi(self.rsa_obj.p).unwrap()
+    }
+
+    pub unsafe fn get_q(&self) -> BigNum {
+        BigNum::new_from_ffi(self.rsa_obj.q).unwrap()
+    }
+
+    pub fn get_type(&self) -> &str {
+        "rsa"
+    }
+}
+
+impl fmt::Debug for RSA {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "Currently no debug output. Sorry :(")
+    }
+}