2 files changed, 9 insertions, 1 deletions
diff --git a/lib/puppet/parser/ast/function.rb b/lib/puppet/parser/ast/function.rb
index 63d7c7abf..eb36fa906 100644
--- a/lib/puppet/parser/ast/function.rb
+++ b/lib/puppet/parser/ast/function.rb
@@ -42,7 +42,7 @@ class Puppet::Parser::AST
                 raise Puppet::DevError, "Invalid function type %s" % @ftype.inspect
             end
 
-            # Lastly, check the arity
+            # Lastly, check the parity
         end
     end
 end
diff --git a/lib/puppet/parser/functions.rb b/lib/puppet/parser/functions.rb
index 8decb8227..51903e919 100644
--- a/lib/puppet/parser/functions.rb
+++ b/lib/puppet/parser/functions.rb
@@ -317,6 +317,14 @@ module Functions
             end
             output
     end
+    
+    newfunction(:sha1, :type => :rvalue,
+        :doc => "Returns a SHA1 hash value from a provided string.") do |args|
+            require 'sha1'
+
+            Digest::SHA1.hexdigest(args[0])
+    end
+
 end
 end