fixup! refactor!: Pull Crypto trait to the high-level implementation

Author: chrysn

examples/edhoc-rs-no_std/src/main.rs

@@ -108,7 +108,8 @@ fn main() -> ! {
             Some(CRED_R),
         );
 
-        let c_i: u8 = generate_connection_identifier_cbor().into();
+        let c_i: u8 =
+            generate_connection_identifier_cbor(&mut edhoc_crypto::default_crypto()).into();
         let message_1 = initiator.prepare_message_1(c_i);
         assert!(message_1.is_ok());
     }
@@ -134,12 +135,14 @@ fn main() -> ! {
             Some(CRED_I),
         );
 
-        let c_i: u8 = generate_connection_identifier_cbor().into();
+        let c_i: u8 =
+            generate_connection_identifier_cbor(&mut edhoc_crypto::default_crypto()).into();
         let (initiator, message_1) = initiator.prepare_message_1(c_i).unwrap(); // to update the state
 
         let responder = responder.process_message_1(&message_1).unwrap();
 
-        let c_r: u8 = generate_connection_identifier_cbor().into();
+        let c_r: u8 =
+            generate_connection_identifier_cbor(&mut edhoc_crypto::default_crypto()).into();
         let (responder, message_2) = responder.prepare_message_2(c_r).unwrap();
         assert!(c_r != 0xff);