Implement VoprfParameters for NistP256 and NistP384 (#506)

Author: daxpedda

.github/workflows/p256.yml

@@ -46,7 +46,8 @@ jobs:
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features pkcs8
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features serde
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features sha256
-      - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features arithmetic,bits,ecdh,ecdsa,jwk,pem,pkcs8,serde,sha256
+      - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features voprf
+      - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features arithmetic,bits,ecdh,ecdsa,jwk,pem,pkcs8,serde,sha256,voprf
 
   test:
     runs-on: ubuntu-latest

.github/workflows/p384.yml

@@ -45,7 +45,8 @@ jobs:
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features pkcs8
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features serde
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features sha384
-      - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features ecdsa,jwk,pem,pkcs8,serde,sha384
+      - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features voprf
+      - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features ecdsa,jwk,pem,pkcs8,serde,sha384,voprf
 
   test:
     runs-on: ubuntu-latest

Cargo.lock

@@ -17,7 +17,7 @@ edition = "2021"
 rust-version = "1.56"
 
 [dependencies]
-elliptic-curve = { version = "0.11.6", default-features = false, features = ["hazmat", "sec1"] }
+elliptic-curve = { version = "0.11.7", default-features = false, features = ["hazmat", "sec1"] }
 sec1 = { version = "0.2", default-features = false }
 
 # optional dependencies
@@ -46,6 +46,7 @@ serde = ["ecdsa-core/serde", "elliptic-curve/serde", "sec1/serde"]
 sha256 = ["digest", "sha2"]
 std = ["ecdsa-core/std", "elliptic-curve/std"] # TODO: use weak activation for `ecdsa-core/std` when available
 test-vectors = ["hex-literal"]
+voprf = ["elliptic-curve/voprf", "sha2"]
 
 [package.metadata.docs.rs]
 all-features = true

p256/Cargo.toml

@@ -150,3 +150,13 @@ impl elliptic_curve::sec1::ValidatePublicKey for NistP256 {}
 #[cfg(feature = "bits")]
 #[cfg_attr(docsrs, doc(cfg(feature = "bits")))]
 pub type ScalarBits = elliptic_curve::ScalarBits<NistP256>;
+
+#[cfg(feature = "voprf")]
+#[cfg_attr(docsrs, doc(cfg(feature = "voprf")))]
+impl elliptic_curve::VoprfParameters for NistP256 {
+    /// See <https://www.ietf.org/archive/id/draft-irtf-cfrg-voprf-08.html#section-4.3-1.3>.
+    const ID: u16 = 0x0003;
+
+    /// See <https://www.ietf.org/archive/id/draft-irtf-cfrg-voprf-08.html#section-4.3-1.2>.
+    type Hash = sha2::Sha256;
+}

p256/src/lib.rs

@@ -14,7 +14,7 @@ rust-version = "1.56"
 
 [dependencies]
 ecdsa = { version = "0.13", optional = true, default-features = false, features = ["der"] }
-elliptic-curve = { version = "0.11", default-features = false, features = ["hazmat", "sec1"] }
+elliptic-curve = { version = "0.11.7", default-features = false, features = ["hazmat", "sec1"] }
 sec1 = { version = "0.2", default-features = false }
 sha2 = { version = "0.9", optional = true, default-features = false }
 
@@ -30,6 +30,7 @@ pkcs8 = ["elliptic-curve/pkcs8"]
 serde = ["ecdsa/serde", "elliptic-curve/serde", "sec1/serde"]
 sha384 = ["ecdsa/digest", "ecdsa/hazmat", "sha2"]
 std = ["elliptic-curve/std"]
+voprf = ["elliptic-curve/voprf", "sha2"]
 
 [package.metadata.docs.rs]
 all-features = true

p384/Cargo.toml

@@ -106,3 +106,13 @@ pub type ScalarCore = elliptic_curve::ScalarCore<NistP384>;
 pub type SecretKey = elliptic_curve::SecretKey<NistP384>;
 
 impl elliptic_curve::sec1::ValidatePublicKey for NistP384 {}
+
+#[cfg(feature = "voprf")]
+#[cfg_attr(docsrs, doc(cfg(feature = "voprf")))]
+impl elliptic_curve::VoprfParameters for NistP384 {
+    /// See <https://www.ietf.org/archive/id/draft-irtf-cfrg-voprf-08.html#section-4.4-1.3>.
+    const ID: u16 = 0x0004;
+
+    /// See <https://www.ietf.org/archive/id/draft-irtf-cfrg-voprf-08.html#section-4.4-1.2>.
+    type Hash = sha2::Sha384;
+}