--- a/spec/Overview-WebCryptoAPI.xml	Thu Feb 27 17:54:45 2014 -0800
+++ b/spec/Overview-WebCryptoAPI.xml	Thu Feb 27 18:05:12 2014 -0800
@@ -3250,9 +3250,9 @@
             <x:codeblock language="idl">
 interface <dfn id="dfn-RsaKeyAlgorithm">RsaKeyAlgorithm</dfn> : <a href="#dfn-KeyAlgorithm">KeyAlgorithm</a> {
   <span class="comment">// The length, in bits, of the RSA modulus</span>
-  unsigned long <dfn id="dfn-RsaKeyAlgorithm-modulusLength">modulusLength</dfn>;
+  readonly attribute unsigned long <dfn id="dfn-RsaKeyAlgorithm-modulusLength">modulusLength</dfn>;
   <span class="comment">// The RSA public exponent</span>
-  <a href="#dfn-BigInteger">BigInteger</a> <dfn id="dfn-RsaKeyAlgorithm-publicExponent">publicExponent</dfn>;
+  readonly attribute <a href="#dfn-BigInteger">BigInteger</a> <dfn id="dfn-RsaKeyAlgorithm-publicExponent">publicExponent</dfn>;
 };
             </x:codeblock>
           </div>
@@ -8557,7 +8557,7 @@
             <x:codeblock language="idl">
 interface <dfn id="dfn-HmacKeyAlgorithm">HmacKeyAlgorithm</dfn> : <a href="#dfn-KeyAlgorithm">KeyAlgorithm</a> {
   <span class="comment">// The inner hash function to use.</span>
-  KeyAlgorithm hash;
+  readonly attribute KeyAlgorithm hash;
 };
             </x:codeblock>
           </div>

--- a/spec/Overview.html	Thu Feb 27 17:54:45 2014 -0800
+++ b/spec/Overview.html	Thu Feb 27 18:05:12 2014 -0800
@@ -3257,9 +3257,9 @@
             <div class="block"><div class="blockTitleDiv"><span class="blockTitle">IDL</span></div><div class="blockContent"><pre class="code"><code class="idl-code">
 interface <dfn id="dfn-RsaKeyAlgorithm">RsaKeyAlgorithm</dfn> : <a href="#dfn-KeyAlgorithm">KeyAlgorithm</a> {
   <span class="comment">// The length, in bits, of the RSA modulus</span>
-  unsigned long <dfn id="dfn-RsaKeyAlgorithm-modulusLength">modulusLength</dfn>;
+  readonly attribute unsigned long <dfn id="dfn-RsaKeyAlgorithm-modulusLength">modulusLength</dfn>;
   <span class="comment">// The RSA public exponent</span>
-  <a href="#dfn-BigInteger">BigInteger</a> <dfn id="dfn-RsaKeyAlgorithm-publicExponent">publicExponent</dfn>;
+  readonly attribute <a href="#dfn-BigInteger">BigInteger</a> <dfn id="dfn-RsaKeyAlgorithm-publicExponent">publicExponent</dfn>;
 };
             </code></pre></div></div>
           </div>
@@ -8550,7 +8550,7 @@
             <div class="block"><div class="blockTitleDiv"><span class="blockTitle">IDL</span></div><div class="blockContent"><pre class="code"><code class="idl-code">
 interface <dfn id="dfn-HmacKeyAlgorithm">HmacKeyAlgorithm</dfn> : <a href="#dfn-KeyAlgorithm">KeyAlgorithm</a> {
   <span class="comment">// The inner hash function to use.</span>
-  KeyAlgorithm hash;
+  readonly attribute KeyAlgorithm hash;
 };
             </code></pre></div></div>
           </div>