From 6d6429237d5929abe9c5504f82f116614d33f549 Mon Sep 17 00:00:00 2001
From: Lukas Lihotzki <lukas@lihotzki.de>
Date: Mon, 11 Nov 2019 22:04:14 +0100
Subject: [PATCH] Add EC_GROUP_order_bits

---
 openssl-sys/src/ec.rs | 2 ++
 openssl/src/ec.rs     | 9 +++++++++
 2 files changed, 11 insertions(+)

diff --git a/openssl-sys/src/ec.rs b/openssl-sys/src/ec.rs
index ffb1a16cc..e07038488 100644
--- a/openssl-sys/src/ec.rs
+++ b/openssl-sys/src/ec.rs
@@ -61,6 +61,8 @@ extern "C" {
 
     pub fn EC_GROUP_get_degree(group: *const EC_GROUP) -> c_int;
 
+    pub fn EC_GROUP_order_bits(group: *const EC_GROUP) -> c_int;
+
     pub fn EC_GROUP_new_curve_GFp(
         p: *const BIGNUM,
         a: *const BIGNUM,
diff --git a/openssl/src/ec.rs b/openssl/src/ec.rs
index d6097bbca..600974dc4 100644
--- a/openssl/src/ec.rs
+++ b/openssl/src/ec.rs
@@ -228,6 +228,15 @@ impl EcGroupRef {
         unsafe { ffi::EC_GROUP_get_degree(self.as_ptr()) as u32 }
     }
 
+    /// Returns the number of bits in the group order.
+    ///
+    /// OpenSSL documentation at [`EC_GROUP_order_bits`]
+    ///
+    /// [`EC_GROUP_order_bits`]: https://www.openssl.org/docs/man1.1.0/crypto/EC_GROUP_order_bits.html
+    pub fn order_bits(&self) -> u32 {
+        unsafe { ffi::EC_GROUP_order_bits(self.as_ptr()) as u32 }
+    }
+
     /// Returns the generator for the given curve as a [`EcPoint`].
     ///
     /// OpenSSL documentation at [`EC_GROUP_get0_generator`]
-- 
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