Rewrite against a newer cryptonum.

src/lib.rs

@@ -10,9 +10,9 @@
 //! when they should use it, and examples. For now, it mostly just fowards
 //! off to more detailed modules. Help requested!
 extern crate byteorder;
+extern crate cryptonum;
 extern crate digest;
 #[cfg(test)]
-#[macro_use]
 extern crate quickcheck;
 extern crate num;
 extern crate rand;
@@ -20,12 +20,10 @@ extern crate sha1;
 extern crate sha2;
 extern crate simple_asn1;
 
-/// The `cryptonum` module provides support for large numbers at fixed,
-/// cryptographically-relevant sizes.
-pub mod cryptonum;
 /// The `rsa` module provides bare-bones support for RSA signing, verification,
 /// encryption, decryption, and key generation.
 pub mod rsa;
 
 #[cfg(test)]
 mod testing;
+mod utils;