initial commit

1 files changed, 72 insertions, 0 deletions

diff --git a/src/hibe/mod.rs b/src/hibe/mod.rs
new file mode 100644
index 0000000..20d83a6
--- /dev/null
+++ b/src/hibe/mod.rs
@@ -0,0 +1,72 @@
+use super::error::Result;
+
+use rand::Rng;
+
+mod bbg;
+pub use self::bbg::BonehBoyenGoh;
+
+pub trait Hibe {
+    type PrivateKey;
+    type MasterKey;
+    type PublicKey;
+    type Identity;
+
+    fn setup<R: Rng>(&self, rng: R) -> Result<(Self::PublicKey, Self::MasterKey)>;
+
+    fn generate_key<R: Rng>(
+        &self,
+        rng: R,
+        public_key: &Self::PublicKey,
+        master_key: &Self::MasterKey,
+        identity: &[Self::Identity],
+    ) -> Result<Self::PrivateKey>;
+
+    fn derive_key<R: Rng>(
+        &self,
+        rng: R,
+        public_key: &Self::PublicKey,
+        parent_key: &Self::PrivateKey,
+        parent_name: &[Self::Identity],
+        child: &Self::Identity,
+    ) -> Result<Self::PrivateKey>;
+}
+
+pub trait HibeCrypt: Hibe {
+    type Message;
+    type Ciphertext;
+
+    fn encrypt<R: Rng>(
+        &self,
+        rng: R,
+        public_key: &Self::PublicKey,
+        identity: &[Self::Identity],
+        message: &Self::Message,
+    ) -> Result<Self::Ciphertext>;
+
+    fn decrypt(
+        &self,
+        public_key: &Self::PublicKey,
+        key: &Self::PrivateKey,
+        ciphertext: &Self::Ciphertext,
+    ) -> Result<Self::Message>;
+}
+
+pub trait HibeKem: Hibe {
+    type Key;
+    type EncapsulatedKey;
+
+    fn encapsulate<R: Rng>(
+        &self,
+        rng: R,
+        public_key: &Self::PublicKey,
+        identity: &[Self::Identity],
+    ) -> Result<(Self::Key, Self::EncapsulatedKey)>;
+
+    fn decapsulate(
+        &self,
+        public_key: &Self::PublicKey,
+        key: &Self::PrivateKey,
+        encapsulation: &Self::EncapsulatedKey,
+    ) -> Result<Self::Key>;
+}
+