Reorder reading algorithm and data arguments

Read and normalize the algorithm argument(s) before copying the bytes
held by data arguments, to enable avoiding the copy if the operation
is performed on the same thread (which is currently not possible
because the algorithm object getters may modify the data).

Author: twiss

index.html

@@ -544,14 +544,6 @@ <h4>The decapsulateKey method</h4>
               respectively.
             </p>
           </li>
-          <li>
-            <p>
-              Let |ciphertext| be the result of
-              [= get a copy of the buffer source |
-              getting a copy of the bytes held by =] the `ciphertext` parameter passed to the
-              {{SubtleCrypto/decapsulateKey()}} method.
-            </p>
-          </li>
           <li>
             <p>
               Let |normalizedDecapsulationAlgorithm| be the result of
@@ -580,6 +572,14 @@ <h4>The decapsulateKey method</h4>
               |normalizedSharedKeyAlgorithm|.
             </p>
           </li>
+          <li>
+            <p>
+              Let |ciphertext| be the result of
+              [= get a copy of the buffer source |
+              getting a copy of the bytes held by =] the `ciphertext` parameter passed to the
+              {{SubtleCrypto/decapsulateKey()}} method.
+            </p>
+          </li>
           <li>
             <p>
               Let |realm| be the [= relevant realm =] of [= this =].
@@ -683,14 +683,6 @@ <h4>The decapsulateBits method</h4>
               respectively.
             </p>
           </li>
-          <li>
-            <p>
-              Let |ciphertext| be the result of
-              [= get a copy of the buffer source |
-              getting a copy of the bytes held by =] the `ciphertext` parameter passed to the
-              {{SubtleCrypto/decapsulateBits()}} method.
-            </p>
-          </li>
           <li>
             <p>
               Let |normalizedDecapsulationAlgorithm| be the result of
@@ -705,6 +697,14 @@ <h4>The decapsulateBits method</h4>
               |normalizedDecapsulationAlgorithm|.
             </p>
           </li>
+          <li>
+            <p>
+              Let |ciphertext| be the result of
+              [= get a copy of the buffer source |
+              getting a copy of the bytes held by =] the `ciphertext` parameter passed to the
+              {{SubtleCrypto/decapsulateBits()}} method.
+            </p>
+          </li>
           <li>
             <p>
               Let |realm| be the [= relevant realm =] of [= this =].