import ruby trunk

1 files changed, 88 insertions, 0 deletions

diff --git a/lib/openssl/digest.rb b/lib/openssl/digest.rb
new file mode 100644
index 00000000..a7b641fd
--- /dev/null
+++ b/lib/openssl/digest.rb
@@ -0,0 +1,88 @@
+#--
+#
+# $RCSfile$
+#
+# = Ruby-space predefined Digest subclasses
+#
+# = Info
+# 'OpenSSL for Ruby 2' project
+# Copyright (C) 2002  Michal Rokos <m.rokos@sh.cvut.cz>
+# All rights reserved.
+#
+# = Licence
+# This program is licenced under the same licence as Ruby.
+# (See the file 'LICENCE'.)
+#
+# = Version
+# $Id$
+#
+#++
+
+module OpenSSL
+  class Digest
+
+    alg = %w(DSS DSS1 MD2 MD4 MD5 MDC2 RIPEMD160 SHA SHA1)
+    if OPENSSL_VERSION_NUMBER > 0x00908000
+      alg += %w(SHA224 SHA256 SHA384 SHA512)
+    end
+
+    # Return the +data+ hash computed with +name+ Digest. +name+ is either the
+    # long name or short name of a supported digest algorithm.
+    #
+    # === Examples
+    #
+    #   OpenSSL::Digest.digest("SHA256", "abc")
+    #
+    # which is equivalent to:
+    #
+    #   OpenSSL::Digest::SHA256.digest("abc")
+
+    def self.digest(name, data)
+      super(data, name)
+    end
+
+    alg.each{|name|
+      klass = Class.new(self) {
+        define_method(:initialize, ->(data = nil) {super(name, data)})
+      }
+      singleton = (class << klass; self; end)
+      singleton.class_eval{
+        define_method(:digest){|data| new.digest(data) }
+        define_method(:hexdigest){|data| new.hexdigest(data) }
+      }
+      const_set(name, klass)
+    }
+
+    # Deprecated.
+    #
+    # This class is only provided for backwards compatibility.
+    class Digest < Digest # :nodoc:
+      # Deprecated.
+      #
+      # See OpenSSL::Digest.new
+      def initialize(*args)
+        warn('Digest::Digest is deprecated; use Digest')
+        super(*args)
+      end
+    end
+
+  end # Digest
+
+  # Returns a Digest subclass by +name+.
+  #
+  #   require 'openssl'
+  #
+  #   OpenSSL::Digest("MD5")
+  #   # => OpenSSL::Digest::MD5
+  #
+  #   Digest("Foo")
+  #   # => NameError: wrong constant name Foo
+
+  def Digest(name)
+    OpenSSL::Digest.const_get(name)
+  end
+
+  module_function :Digest
+
+end # OpenSSL
+