Add OID support

Cargo.toml

@@ -24,3 +24,6 @@ members = [
 
 [profile.dev]
 opt-level = 2
+
+[patch.crates-io]
+digest = { git = "https://github.com/RustCrypto/traits", branch = "digest/const-oid-impl" }

sha2/Cargo.toml

@@ -27,8 +27,9 @@ digest = { version = "0.10.3", features = ["dev"] }
 hex-literal = "0.2.2"
 
 [features]
-default = ["std"]
+default = ["std", "oid"]
 std = ["digest/std"]
+oid = ["digest/oid"]
 asm = ["sha2-asm"] # WARNING: this feature SHOULD NOT be enabled by library crates
 compress = [] # Expose compress functions
 force-soft = [] # Force software implementation

sha2/src/lib.rs

@@ -57,6 +57,11 @@ use digest::{
     consts::{U28, U32, U48, U64},
     core_api::{CoreWrapper, CtVariableCoreWrapper},
 };
+#[cfg(feature = "oid")]
+use digest::{
+    const_oid::{AssociatedOid, ObjectIdentifier},
+    impl_oid_carrier,
+};
 
 #[rustfmt::skip]
 mod consts;
@@ -71,15 +76,22 @@ pub use sha512::compress512;
 
 pub use core_api::{Sha256VarCore, Sha512VarCore};
 
+impl_oid_carrier!(OidSha256, "2.16.840.1.101.3.4.2.1");
+impl_oid_carrier!(OidSha384, "2.16.840.1.101.3.4.2.2");
+impl_oid_carrier!(OidSha512, "2.16.840.1.101.3.4.2.3");
+impl_oid_carrier!(OidSha224, "2.16.840.1.101.3.4.2.4");
+impl_oid_carrier!(OidSha512_224, "2.16.840.1.101.3.4.2.5");
+impl_oid_carrier!(OidSha512_256, "2.16.840.1.101.3.4.2.6");
+
 /// SHA-224 hasher.
-pub type Sha224 = CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, U28>>;
+pub type Sha224 = CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, U28, OidSha224>>;
 /// SHA-256 hasher.
 pub type Sha256 = CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, U32>>;
 /// SHA-512/224 hasher.
-pub type Sha512_224 = CoreWrapper<CtVariableCoreWrapper<Sha512VarCore, U28>>;
+pub type Sha512_224 = CoreWrapper<CtVariableCoreWrapper<Sha512VarCore, U28, OidSha512_224>>;
 /// SHA-512/256 hasher.
-pub type Sha512_256 = CoreWrapper<CtVariableCoreWrapper<Sha512VarCore, U32>>;
+pub type Sha512_256 = CoreWrapper<CtVariableCoreWrapper<Sha512VarCore, U32, OidSha512_256>>;
 /// SHA-384 hasher.
-pub type Sha384 = CoreWrapper<CtVariableCoreWrapper<Sha512VarCore, U48>>;
+pub type Sha384 = CoreWrapper<CtVariableCoreWrapper<Sha512VarCore, U48, OidSha384>>;
 /// SHA-512 hasher.
-pub type Sha512 = CoreWrapper<CtVariableCoreWrapper<Sha512VarCore, U64>>;
+pub type Sha512 = CoreWrapper<CtVariableCoreWrapper<Sha512VarCore, U64, OidSha512>>;