feat(packet): add nids to ecccurve

Former-commit-id: a04f37a

src/lib.rs

@@ -1,9 +1,9 @@
 #[macro_use]
 extern crate nom;
-// extern crate openssl;
 extern crate base64;
 extern crate byteorder;
 extern crate crc24;
+extern crate openssl;
 #[macro_use]
 extern crate enum_primitive;
 extern crate chrono;

src/packet/types/ecc_curve.rs

@@ -1,3 +1,5 @@
+use openssl::nid::Nid;
+
 use super::packet::PublicKeyAlgorithm;
 
 #[derive(Clone, Debug, Eq, PartialEq)]
@@ -29,6 +31,21 @@ impl ECCCurve {
         }
     }
 
+    /// Returns the matching OpenSSL nid for the curve.
+    pub fn to_nid(&self) -> Option<Nid> {
+        match *self {
+            ECCCurve::Curve25519 => None,
+            ECCCurve::Ed25519 => None,
+            ECCCurve::P256 => Some(Nid::X9_62_PRIME256V1),
+            ECCCurve::P384 => None,
+            ECCCurve::P521 => None,
+            ECCCurve::BrainpoolP256r1 => None,
+            ECCCurve::BrainpoolP384r1 => None,
+            ECCCurve::BrainpoolP512r1 => None,
+            ECCCurve::Secp256k1 => Some(Nid::SECP256K1),
+        }
+    }
+
     /// IETF formatted OID
     pub fn oid_str(&self) -> &str {
         match *self {