* ext/digest/lib/digest/hmac.rb (Digest::HMAC::update): Minor

  optimization.

* ext/digest/digest.c (rb_digest_instance_equal): Allow comparing
  a digest instance with another of a different class.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@11254 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 6 insertions, 5 deletions

diff --git a/ext/digest/digest.c b/ext/digest/digest.c
index 5d58149b50..c4a58cf3f6 100644
--- a/ext/digest/digest.c
+++ b/ext/digest/digest.c
@@ -286,16 +286,16 @@ rb_digest_instance_inspect(VALUE self)
  *     digest_obj == string -> boolean
  *
  * If a string is given, checks whether it is equal to the hex-encoded
- * hash value of the digest object.  If another instance of the same
- * digest class is given, checks whether they have the same hash
- * value.  Otherwise returns false.
+ * hash value of the digest object.  If another digest instance is
+ * given, checks whether they have the same hash value.  Otherwise
+ * returns false.
  */
 static VALUE
 rb_digest_instance_equal(VALUE self, VALUE other)
 {
     VALUE str1, str2;
 
-    if (rb_obj_class(self) == rb_obj_class(other)) {
+    if (rb_obj_is_kind_of(other, rb_mDigest_Instance) == Qtrue) {
         str1 = rb_digest_instance_digest(0, 0, self);
         str2 = rb_digest_instance_digest(0, 0, other);
     } else {
diff --git a/ext/digest/lib/digest/hmac.rb b/ext/digest/lib/digest/hmac.rb
index a6415a156a..b42fef98d6 100644
--- a/ext/digest/lib/digest/hmac.rb
+++ b/ext/digest/lib/digest/hmac.rb
@@ -69,7 +69,8 @@ module Digest
     end
 
     def update(text)
-      @md.reset.update(@opad + @md.digest(@ipad + text))
+      # @md is reset when digest() returns
+      @md.update(@opad + @md.digest(@ipad + text))
       self
     end