2 files changed, 34 insertions, 28 deletions
diff --git a/ext/openssl/lib/openssl/cipher.rb b/ext/openssl/lib/openssl/cipher.rb
index 9f8776d6fc..049533d06b 100644
--- a/ext/openssl/lib/openssl/cipher.rb
+++ b/ext/openssl/lib/openssl/cipher.rb
@@ -20,19 +20,25 @@
 
 module OpenSSL
   module Cipher
-    %w(AES CAST5 BF DES IDEA RC2 RC4 RC5).each{|cipher|
-      eval(<<-EOD)
-        class #{cipher} < Cipher
-          def initialize(*args)
-            args = args.join('-')
-            if args.size == 0
-              super(\"#{cipher}\")
-            else
-              super(\"#{cipher}-#\{args\}\")
-            end
-          end
-        end
-      EOD
+    %w(AES CAST5 BF DES IDEA RC2 RC4 RC5).each{|name|
+      klass = Class.new(Cipher){
+        define_method(:initialize){|*args|
+          cipher_name = args.inject(name){|n, arg| "#{n}-#{arg}" }
+          super(cipher_name)
+        }
+      }
+      const_set(name, klass)
+    }
+
+    %w(128 192 256).each{|keylen|
+      klass = Class.new(Cipher){
+        define_method(:initialize){|mode|
+          mode ||= "CBC"
+          cipher_name = "AES-#{keylen}-#{mode}"
+          super(cipher_name)
+        }
+      }
+      const_set("AES#{keylen}", klass)
     }
 
     class Cipher
diff --git a/ext/openssl/lib/openssl/digest.rb b/ext/openssl/lib/openssl/digest.rb
index 5745661c3c..b3e4484805 100644
--- a/ext/openssl/lib/openssl/digest.rb
+++ b/ext/openssl/lib/openssl/digest.rb
@@ -26,22 +26,22 @@ module OpenSSL
       alg += %w(SHA224 SHA256 SHA384 SHA512)
     end
 
-    alg.each{|digest|
-      self.module_eval(<<-EOD)
-        class #{digest} < Digest
-          def initialize(data=nil)
-            super(\"#{digest}\", data)
+    alg.each{|name|
+      klass = Class.new(Digest){
+        define_method(:initialize){|*data|
+          if data.length > 1
+            raise ArgumentError,
+              "wrong number of arguments (#{data.length} for 1)"
           end
-
-          def #{digest}::digest(data)
-            Digest::digest(\"#{digest}\", data)
-          end
-
-          def #{digest}::hexdigest(data)
-            Digest::hexdigest(\"#{digest}\", data)
-          end
-        end
-      EOD
+          super(name, data.first)
+        }
+      }
+      singleton = (class <<klass; self; end)
+      singleton.class_eval{
+        define_method(:digest){|data| Digest.digest(name, data) }
+        define_method(:hexdigest){|data| Digest.hexdigest(name, data) }
+      }
+      const_set(name, klass)
     }
 
   end # Digest