4 files changed, 81 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/tools/security/zsteg/Gemfile b/nixpkgs/pkgs/tools/security/zsteg/Gemfile
new file mode 100644
index 000000000000..814e5fe8ad4e
--- /dev/null
+++ b/nixpkgs/pkgs/tools/security/zsteg/Gemfile
@@ -0,0 +1,2 @@
+source 'https://rubygems.org'
+gem 'zsteg'
diff --git a/nixpkgs/pkgs/tools/security/zsteg/Gemfile.lock b/nixpkgs/pkgs/tools/security/zsteg/Gemfile.lock
new file mode 100644
index 000000000000..b611fb93f5a9
--- /dev/null
+++ b/nixpkgs/pkgs/tools/security/zsteg/Gemfile.lock
@@ -0,0 +1,19 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    iostruct (0.0.4)
+    rainbow (3.0.0)
+    zpng (0.3.1)
+      rainbow
+    zsteg (0.2.2)
+      iostruct
+      zpng (>= 0.3.1)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  zsteg
+
+BUNDLED WITH
+   2.1.4
diff --git a/nixpkgs/pkgs/tools/security/zsteg/default.nix b/nixpkgs/pkgs/tools/security/zsteg/default.nix
new file mode 100644
index 000000000000..e47f285de70a
--- /dev/null
+++ b/nixpkgs/pkgs/tools/security/zsteg/default.nix
@@ -0,0 +1,16 @@
+{ lib, bundlerApp }:
+
+bundlerApp {
+  pname = "zsteg";
+
+  gemdir = ./.;
+
+  exes = [ "zsteg" ];
+
+  meta = with lib; {
+    description = "Detect stegano-hidden data in PNG & BMP.";
+    homepage = "http://zed.0xff.me/";
+    license = licenses.mit;
+    maintainers = with maintainers; [ applePrincess ];
+  };
+}
diff --git a/nixpkgs/pkgs/tools/security/zsteg/gemset.nix b/nixpkgs/pkgs/tools/security/zsteg/gemset.nix
new file mode 100644
index 000000000000..4f5bd79ce44c
--- /dev/null
+++ b/nixpkgs/pkgs/tools/security/zsteg/gemset.nix
@@ -0,0 +1,44 @@
+{
+  iostruct = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0kwp6ryis32j3z7myw8g7v1yszwrwyl04g2c7flr42pwxga1afxc";
+      type = "gem";
+    };
+    version = "0.0.4";
+  };
+  rainbow = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0bb2fpjspydr6x0s8pn1pqkzmxszvkfapv0p4627mywl7ky4zkhk";
+      type = "gem";
+    };
+    version = "3.0.0";
+  };
+  zpng = {
+    dependencies = ["rainbow"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0ciyab7qxqsxjhfvr6rbpdzg655fi1zygqg9sd9m6wmgc037dj74";
+      type = "gem";
+    };
+    version = "0.3.1";
+  };
+  zsteg = {
+    dependencies = ["iostruct" "zpng"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1mwajlsgs27449n2yf2f9hz8g46qv9bz9f58i9cz1jg58spvpxpk";
+      type = "gem";
+    };
+    version = "0.2.2";
+  };
+}