From 9e041fd9befe5091e49269c387b18f079f1a08e1 Mon Sep 17 00:00:00 2001
From: Chris Martin <ch.martin@gmail.com>
Date: Sat, 4 Jun 2016 13:55:15 -0400
Subject: [PATCH] secp256k1: init at 2016-05-30

---
 pkgs/tools/security/secp256k1/default.nix | 35 +++++++++++++++++++++++
 pkgs/top-level/all-packages.nix           |  2 ++
 2 files changed, 37 insertions(+)
 create mode 100644 pkgs/tools/security/secp256k1/default.nix

diff --git a/pkgs/tools/security/secp256k1/default.nix b/pkgs/tools/security/secp256k1/default.nix
new file mode 100644
index 00000000000..f7a53469545
--- /dev/null
+++ b/pkgs/tools/security/secp256k1/default.nix
@@ -0,0 +1,35 @@
+{ stdenv, fetchFromGitHub, autoconf, automake, libtool, ... }:
+
+stdenv.mkDerivation rec {
+  name = "secp256k1-${version}";
+
+  # I can't find any version numbers, so we're just using the date
+  # of the last commit.
+  version = "2016-05-30";
+
+  src = fetchFromGitHub {
+    owner = "bitcoin-core";
+    repo = "secp256k1";
+    rev = "b3be8521e694eaf45dd29baea035055183c42fe2";
+    sha256 = "1pgsy72w87yxbiqn96hnm8alsfx3rj7d9jlzdsypyf6i1rf6w4bq";
+  };
+
+  buildInputs = [ autoconf automake libtool ];
+
+  configureFlags = [ "--enable-module-recovery" ];
+
+  preConfigure = "./autogen.sh";
+
+  meta = with stdenv.lib; {
+    description = "Optimized C library for EC operations on curve secp256k1";
+    longDescription = ''
+      Optimized C library for EC operations on curve secp256k1.
+      Part of Bitcoin Core. This library is a work in progress
+      and is being used to research best practices. Use at your
+      own risk.
+    '';
+    homepage = https://github.com/bitcoin-core/secp256k1;
+    license = with licenses; [ mit ];
+    maintainers = with maintainers; [ chris-martin ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index dc47a12f10a..9f64e1167fc 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -3289,6 +3289,8 @@ in
 
   seccure = callPackage ../tools/security/seccure { };
 
+  secp256k1 = callPackage ../tools/security/secp256k1 { };
+
   securefs = callPackage ../tools/filesystems/securefs { };
 
   setroot = callPackage  ../tools/X11/setroot { };