Implement EcKey

cc #499

openssl-sys/src/lib.rs

@@ -24,6 +24,7 @@ pub enum ASN1_TYPE {}
 pub enum BN_CTX {}
 pub enum BN_GENCB {}
 pub enum COMP_METHOD {}
+pub enum EC_KEY {}
 pub enum ENGINE {}
 pub enum EVP_CIPHER_CTX {}
 pub enum EVP_MD {}
@@ -1341,8 +1342,10 @@ extern {
     #[cfg(not(ossl101))]
     pub fn DH_get_2048_256() -> *mut DH;
 
-    pub fn ERR_get_error() -> c_ulong;
+    pub fn EC_KEY_new_by_curve_name(nid: c_int) -> *mut EC_KEY;
+    pub fn EC_KEY_free(key: *mut EC_KEY);
 
+    pub fn ERR_get_error() -> c_ulong;
     pub fn ERR_lib_error_string(err: c_ulong) -> *const c_char;
     pub fn ERR_func_error_string(err: c_ulong) -> *const c_char;
     pub fn ERR_reason_error_string(err: c_ulong) -> *const c_char;

openssl/src/ec_key.rs

@@ -0,0 +1,62 @@
+use ffi;
+use std::ops::Deref;
+
+use cvt_p;
+use error::ErrorStack;
+use nid::Nid;
+use opaque::Opaque;
+
+pub struct EcKeyRef(Opaque);
+
+impl EcKeyRef {
+    pub unsafe fn from_ptr<'a>(ptr: *mut ffi::EC_KEY) -> &'a EcKeyRef {
+        &*(ptr as *mut _)
+    }
+
+    pub fn as_ptr(&self) -> *mut ffi::EC_KEY {
+        self as *const _ as *mut _
+    }
+}
+
+pub struct EcKey(*mut ffi::EC_KEY);
+
+impl Drop for EcKey {
+    fn drop(&mut self) {
+        unsafe {
+            ffi::EC_KEY_free(self.0);
+        }
+    }
+}
+
+impl EcKey {
+    pub fn new_by_curve_name(nid: Nid) -> Result<EcKey, ErrorStack> {
+        unsafe {
+            cvt_p(ffi::EC_KEY_new_by_curve_name(nid.as_raw())).map(EcKey)
+        }
+    }
+
+    pub unsafe fn from_ptr(ptr: *mut ffi::EC_KEY) -> EcKey {
+        EcKey(ptr)
+    }
+}
+
+impl Deref for EcKey {
+    type Target = EcKeyRef;
+
+    fn deref(&self) -> &EcKeyRef {
+        unsafe {
+            EcKeyRef::from_ptr(self.0)
+        }
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use nid;
+    use super::*;
+
+    #[test]
+    fn new_by_curve_name() {
+        EcKey::new_by_curve_name(nid::X9_62_PRIME256V1).unwrap();
+    }
+}

openssl/src/lib.rs

@@ -28,6 +28,7 @@ pub mod bn;
 pub mod crypto;
 pub mod dh;
 pub mod dsa;
+pub mod ec_key;
 pub mod error;
 pub mod hash;
 pub mod memcmp;