gost94: fix oid

Author: newpavlov

gost94/src/lib.rs

@@ -13,12 +13,14 @@ pub use digest::{self, Digest};
 use core::fmt;
 use digest::{
     FixedOutput, FixedOutputReset, HashMarker, Output, OutputSizeUser, Reset, Update,
-    const_oid::{AssociatedOid, ObjectIdentifier},
     consts::U129,
     core_api::{AlgorithmName, BlockSizeUser, CoreWrapper},
     crypto_common::hazmat::{DeserializeStateError, SerializableState, SerializedState},
 };
 
+#[cfg(feature = "oid")]
+use digest::const_oid::{AssociatedOid, ObjectIdentifier};
+
 mod gost94_core;
 /// GOST94 parameters.
 pub mod params;
@@ -120,11 +122,13 @@ impl<P: Gost94Params> SerializableState for Gost94<P> {
     }
 }
 
-// From RFC 4490
+#[cfg(feature = "oid")]
 impl AssociatedOid for Gost94CryptoPro {
+    // From RFC 4490
     const OID: ObjectIdentifier = ObjectIdentifier::new_unwrap("1.2.643.2.2.9");
 }
 
+#[cfg(feature = "oid")]
 impl AssociatedOid for Gost94UA {
     const OID: ObjectIdentifier = ObjectIdentifier::new_unwrap("1.2.804.2.1.1.1.1.2.1");
 }