From 85d2f08644cabfeb1eb78785d215f265a27848ca Mon Sep 17 00:00:00 2001
From: John <john@home>
Date: Sun, 10 Mar 2013 15:05:33 +0200
Subject: [PATCH] added key decryptor

---
 gener.rb | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 67 insertions(+), 3 deletions(-)

diff --git a/gener.rb b/gener.rb
index 8ff1e3a..8db8045 100755
--- a/gener.rb
+++ b/gener.rb
@@ -116,7 +116,18 @@ def generate_bins (key_sink)
     bin_name = @bin_dir + '%02X' % number
     receivers = keys.map { |k| "-r #{k}"}.join(' ')
 
-    system "gpg --batch --homedir #{@public_repo} #{receivers} -o #{bin_name} -e"
+    r,w = IO.pipe
+
+    gpg_call = "gpg --batch --always-trust --homedir #{@public_repo} #{receivers} -o #{bin_name} -e"
+
+    pid = spawn(gpg_call, :in => r)
+    r.close
+
+    w.write(chunk)
+
+    w.close
+
+    Process.wait pid
   end
 
   def combine_keys (&block)
@@ -136,7 +147,7 @@ def generate_bins (key_sink)
   combine_keys do |c|
     chunk = generate_key_chunk
     key_sink.write(chunk)
-    write_bin(num, generate_key_chunk, c)
+    write_bin(num, chunk, c)
     num += 1
   end
 
@@ -145,8 +156,61 @@ def generate_bins (key_sink)
   Process.waitall
 end
 
+def decrypt_key (rings)
+  def list_bins
+    # enumerate all bins in alphabetical order
+    (Dir.entries(@bin_dir) - ['.', '..']).sort.map do |x|
+      @bin_dir + x
+    end
+  end
+
+  bin_list = list_bins
+
+  chunks = bin_list.clone
+
+  todo_count = bin_list.size
+
+  for ring in rings
+    break if todo_count <= 0
+
+    bin_list.each_index do |bi|
+      next if bin_list[bi] == nil
+
+      r,w = IO.pipe
+
+      pid = spawn("gpg --batch --homedir #{ring} -d #{bin_list[bi]}", :out => w, :err => '/dev/null')
+      w.close
+
+      ch = r.read
+
+      r.close
+      Process.wait pid
+      if $?.exitstatus == 0
+        bin_list[bi] = nil
+        chunks[bi] = ch
+        todo_count -= 1
+      end
+    end
+  end
+
+  raise "Cannot decrypt some of the bins: #{bin_list.inspect}" if todo_count > 0
+ 
+  yield chunks.join
+end
 
 #regenerate_keys
 
-generate_bins (spawn_sha_sink)
+#generate_bins (spawn_sha_sink)
+
+decrypt_key %w{
+  ./private/aria
+  ./private/jaime
+  ./private/cercei
+  ./private/tywin
+} do |key|
+  sink = spawn_sha_sink
+  sink.write key
+  sink.close
 
+  Process.waitall
+end 
-- 
2.11.4.GIT