Port System.Security.Cryptography.Pkcs source comments to Docs (#2309)

* Port System.Security.Cryptography.Pkcs source comments to Docs

* Update xml/System.Security.Cryptography.Pkcs/Pkcs12CertBag.xml

Co-Authored-By: carlossanlop <[email protected]>

* Update xml/System.Security.Cryptography.Pkcs/Rfc3161TimestampRequest.xml

Co-Authored-By: carlossanlop <[email protected]>

* Update xml/System.Security.Cryptography.Pkcs/Rfc3161TimestampRequest.xml

Co-Authored-By: carlossanlop <[email protected]>

Author: carlossanlop

xml/System.Security.Cryptography.Pkcs/Pkcs12CertBag.xml

@@ -37,9 +37,9 @@
         <Parameter Name="encodedCertificate" Type="System.ReadOnlyMemory&lt;System.Byte&gt;" />
       </Parameters>
       <Docs>
-        <param name="certificateType">To be added.</param>
-        <param name="encodedCertificate">To be added.</param>
-        <summary>To be added.</summary>
+        <param name="certificateType">The Object Identifier (OID) for the certificate type.</param>
+        <param name="encodedCertificate">The encoded certificate value.</param>
+        <summary>Initializes a new instance of the <see cref="T:System.Security.Cryptography.Pkcs.Pkcs12CertBag" /> class using the specified certificate type and encoding.</summary>
         <remarks>To be added.</remarks>
       </Docs>
     </Member>
@@ -134,4 +134,4 @@
       </Docs>
     </Member>
   </Members>
-</Type>
+</Type>

xml/System.Security.Cryptography.Pkcs/Rfc3161TimestampRequest.xml

@@ -121,14 +121,14 @@
         <Parameter Name="extensions" Type="System.Security.Cryptography.X509Certificates.X509ExtensionCollection" />
       </Parameters>
       <Docs>
-        <param name="hash">To be added.</param>
-        <param name="hashAlgorithmId">To be added.</param>
-        <param name="requestedPolicyId">To be added.</param>
-        <param name="nonce">To be added.</param>
-        <param name="requestSignerCertificates">To be added.</param>
-        <param name="extensions">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
+        <param name="hash">The pre-computed hash value to be timestamped.</param>
+        <param name="hashAlgorithmId">The Object Identifier (OID) for the hash algorithm that produced <paramref name="hash" />.</param>
+        <param name="requestedPolicyId">The Object Identifier (OID) for a timestamp policy the Timestamp Authority (TSA) should use, or <see langword="null" /> to express no preference.</param>
+        <param name="nonce">An optional nonce (number used once) to uniquely identify this request to pair it with the response. The value is interpreted as an unsigned big-endian integer and may be normalized to the encoding format.</param>
+        <param name="requestSignerCertificates"><see langword="true" /> to indicate the Timestamp Authority (TSA) must include the signing certificate in the issued timestamp token; otherwise, <see langword="false" />.</param>
+        <param name="extensions">RFC3161 extensions to present with the request.</param>
+        <summary>Create a timestamp request using a pre-computed hash value.</summary>
+        <returns>An <see cref="T:System.Security.Cryptography.Pkcs.Rfc3161TimestampRequest" /> representing the chosen values.</returns>
         <remarks>To be added.</remarks>
       </Docs>
     </Member>
@@ -481,4 +481,4 @@
       </Docs>
     </Member>
   </Members>
-</Type>
+</Type>

xml/System.Security.Cryptography.Pkcs/Rfc3161TimestampToken.xml

@@ -41,8 +41,8 @@
       </ReturnValue>
       <Parameters />
       <Docs>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
+        <summary>Gets a Signed Cryptographic Message Syntax (CMS) representation of the RFC3161 timestamp token.</summary>
+        <returns>The <see cref="T:System.Security.Cryptography.Pkcs.SignedCms" /> representation of the <see cref="T:System.Security.Cryptography.Pkcs.Rfc3161TimestampToken" />.</returns>
         <remarks>To be added.</remarks>
       </Docs>
     </Member>