1 files changed, 31 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/tools/security/hashcash/default.nix b/nixpkgs/pkgs/tools/security/hashcash/default.nix
new file mode 100644
index 000000000000..f86684178fcb
--- /dev/null
+++ b/nixpkgs/pkgs/tools/security/hashcash/default.nix
@@ -0,0 +1,31 @@
+{ lib, stdenv, fetchurl, openssl }:
+
+stdenv.mkDerivation rec {
+  pname = "hashcash";
+  version = "1.22";
+
+  buildInputs = [ openssl ];
+
+  src = fetchurl {
+    url = "http://www.hashcash.org/source/hashcash-${version}.tgz";
+    sha256 = "15kqaimwb2y8wvzpn73021bvay9mz1gqqfc40gk4hj6f84nz34h1";
+  };
+
+  makeFlags = [
+    "generic-openssl"
+    "LIBCRYPTO=-lcrypto"
+  ];
+
+  installFlags = [
+    "INSTALL_PATH=${placeholder "out"}/bin"
+    "MAN_INSTALL_PATH=${placeholder "out"}/share/man/man1"
+    "DOC_INSTALL_PATH=${placeholder "out"}/share/doc/hashcash-$(version)"
+  ];
+
+  meta = with lib; {
+    description = "Proof-of-work algorithm used as spam and denial-of-service counter measure";
+    homepage = "http://hashcash.org";
+    license = licenses.gpl2;
+    maintainers = with maintainers; [ kisonecat ];
+  };
+}