diff -r ebc84c812384 -r 46218c8b8afa Symbian3/PDK/Source/GUID-E7C820D7-7E00-5A95-9847-29A0FB0E78F1.dita
--- a/Symbian3/PDK/Source/GUID-E7C820D7-7E00-5A95-9847-29A0FB0E78F1.dita	Thu Mar 11 15:24:26 2010 +0000
+++ b/Symbian3/PDK/Source/GUID-E7C820D7-7E00-5A95-9847-29A0FB0E78F1.dita	Thu Mar 11 18:02:22 2010 +0000
@@ -1,80 +1,80 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
-<!-- This component and the accompanying materials are made available under the terms of the License 
-"Eclipse Public License v1.0" which accompanies this distribution, 
-and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
-<!-- Initial Contributors:
-    Nokia Corporation - initial contribution.
-Contributors: 
--->
-<!DOCTYPE concept
-  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
-<concept id="GUID-E7C820D7-7E00-5A95-9847-29A0FB0E78F1" xml:lang="en"><title>What
-is Secure Real-Time Transport Protocol?</title><prolog><metadata><keywords/></metadata></prolog><conbody>
-<p>The Secure Real-Time Transport Protocol (SRTP) is defined as a profile
-of RTP. SRTP provides confidentiality, message authentication, and replay
-protection to the RTP traffic. It also protects the traffic of Real-time Transport
-Control Protocol (RTCP). </p>
-<p>SRTP is a layer between the RTP and the networking layer. The SRTP protocol
-as defined in RFC 3711 provides support for encryption, decryption of RTP
-payloads, and integrity protection of the entire packet. </p>
-<p>SRTP uses a single master key for generating session keys for encryption
-and authentication. RTP is closely related to RTCP(RTP control protocol) which
-can be used to control the RTP session. SRTP has a related protocol called
-Secure RTCP or SRTCP. SRTCP provides the same security related features to
-RTCP, as SRTP provides to RTP. </p>
-<p>SRTP is the security layer that resides between the RTP/RTCP application
-layer and the transport layer. It generates SRTP packets from the RTP/RTCP
-stream and forwards the packets to the receiver. It also transforms incoming
-SRTP packets to RTP/RTCP packets and passes these up the stack. </p>
-<section id="GUID-EC86AD19-5A80-59C5-A1BE-5196751A62A3"><title>How SRTP Works?</title> <p><b>Symbian
-OS Implementation of SRTP</b> </p> <p>The SRTP implementation follows the
-mandatory mechanisms defined in RFC 3711: </p> <ul>
-<li id="GUID-7F501CFB-A009-5ABA-81ED-442C79691B65"><p>AES-128 Counter mode
-for encryption of RTP payloads </p> </li>
-<li id="GUID-B18A31C7-C91A-568C-9FA5-BEF66DD5E534"><p>HMAC-SHA1 for authentication/integrity
-protection of RTP packets </p> </li>
-<li id="GUID-81492123-D4C6-59EC-B6E2-F38B8638E4BC"><p>AES-Counter Mode for
-session key derivation </p> </li>
-<li id="GUID-1EE2C03C-C4B2-59C2-94EB-6DDAC730E667"><p>NULL mode is supported
-for encryption/decryption and authentication. </p> </li>
-</ul> <p><b>Functional Model of SRTP</b> </p> <p>The figure below describes
-the functional model of SRTP. </p> <fig id="GUID-EC50E1D8-79A0-5088-8DB1-3EA50D63ABE4">
-<image href="GUID-26D92AB3-510F-5D29-852A-D55F0C96A798_d0e548281_href.png" placement="inline"/>
-</fig> <p>The SRTP Stack is not an active component and is not network aware.
-It sits as a processing layer between the RTP stack and the network. The RTP
-stack calls for SRTP encryption before it sends the RTP Packets to the network.
-At the receiving side, the RTP stack decrypts the data received prior to normal
-RTP Processing. </p> <p>The APIs execute within the process boundary of the
-RTP Application. The SRTP APIs are generic and can be used by any RTP stack. </p> <p>The
-SRTP library implements the following functionalities: </p> <ul>
-<li id="GUID-6299069A-B48B-5A0D-A306-77B30EE91423"><p>Encryption of RTP payloads </p> </li>
-<li id="GUID-4A8EFCD5-45D4-5DDD-B847-DE1529ECD293"><p>Message authentication
-and integrity of the RTP packet </p> </li>
-<li id="GUID-18578A1C-7D83-58EE-9E80-B5C0490D9FAD"><p>Replay Protection. </p> </li>
-</ul> </section>
-<section><title>How to use SRTP?</title> <p>The SRTP stack is offered as a
-general purpose DLL. </p> <p>The capability of the DLL is ALL -TCB. </p> <p>The
-application should link to srtp.lib. </p> <p><b>Dependency</b> </p> <p>The
-SRTP implementation consists of crypto routines using the Symbian cryptographic
-libraries namely cryptospi.dll (from OS version 9.5) </p> </section>
-</conbody><related-links>
-<link href="GUID-06370120-7738-5694-9A8C-3B5B1E3A4352.dita"><linktext>Creating
-an SRTP                 Session</linktext></link>
-<link href="GUID-425A208C-5D2D-55FD-8623-9E00006E2781.dita"><linktext>Creating
-a                 Cryptographic Context</linktext></link>
-<link href="GUID-372B7A9F-261E-5F3F-B114-4BE2FE2EF7C7.dita"><linktext>Creating
-an SRTP                 Stream</linktext></link>
-<link href="GUID-79846EA2-33CD-5D01-8E96-6092C15BD839.dita"><linktext>Encrypting
-                RTCP Packet Data</linktext></link>
-<link href="GUID-922F292E-9420-593B-B226-2764C5F29DF9.dita"><linktext>Encrypting
-RTP                 Packet Data</linktext></link>
-<link href="GUID-6E1AC4C9-7CA3-503A-AFC0-BAF29CCA8290.dita"><linktext>Decrypting
-RTP                 Packet Data</linktext></link>
-<link href="GUID-F9A24A47-7A0B-5F6E-8B0A-B7A7BCC4EAFC.dita"><linktext>Decrypting
-                RTCP Packet Data</linktext></link>
-<link href="GUID-B9BD2E0A-F214-5344-91A6-E4E99F0D74C8.dita"><linktext>Updating
-Master                 Key</linktext></link>
-<link href="GUID-F9A24A47-7A0B-5F6E-8B0A-B7A7BCC4EAFC.dita"><linktext>Managing
-                Master Key</linktext></link>
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
+<!-- This component and the accompanying materials are made available under the terms of the License 
+"Eclipse Public License v1.0" which accompanies this distribution, 
+and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
+<!-- Initial Contributors:
+    Nokia Corporation - initial contribution.
+Contributors: 
+-->
+<!DOCTYPE concept
+  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
+<concept id="GUID-E7C820D7-7E00-5A95-9847-29A0FB0E78F1" xml:lang="en"><title>What
+is Secure Real-Time Transport Protocol?</title><prolog><metadata><keywords/></metadata></prolog><conbody>
+<p>The Secure Real-Time Transport Protocol (SRTP) is defined as a profile
+of RTP. SRTP provides confidentiality, message authentication, and replay
+protection to the RTP traffic. It also protects the traffic of Real-time Transport
+Control Protocol (RTCP). </p>
+<p>SRTP is a layer between the RTP and the networking layer. The SRTP protocol
+as defined in RFC 3711 provides support for encryption, decryption of RTP
+payloads, and integrity protection of the entire packet. </p>
+<p>SRTP uses a single master key for generating session keys for encryption
+and authentication. RTP is closely related to RTCP(RTP control protocol) which
+can be used to control the RTP session. SRTP has a related protocol called
+Secure RTCP or SRTCP. SRTCP provides the same security related features to
+RTCP, as SRTP provides to RTP. </p>
+<p>SRTP is the security layer that resides between the RTP/RTCP application
+layer and the transport layer. It generates SRTP packets from the RTP/RTCP
+stream and forwards the packets to the receiver. It also transforms incoming
+SRTP packets to RTP/RTCP packets and passes these up the stack. </p>
+<section id="GUID-EC86AD19-5A80-59C5-A1BE-5196751A62A3"><title>How SRTP Works?</title> <p><b>Symbian
+OS Implementation of SRTP</b> </p> <p>The SRTP implementation follows the
+mandatory mechanisms defined in RFC 3711: </p> <ul>
+<li id="GUID-7F501CFB-A009-5ABA-81ED-442C79691B65"><p>AES-128 Counter mode
+for encryption of RTP payloads </p> </li>
+<li id="GUID-B18A31C7-C91A-568C-9FA5-BEF66DD5E534"><p>HMAC-SHA1 for authentication/integrity
+protection of RTP packets </p> </li>
+<li id="GUID-81492123-D4C6-59EC-B6E2-F38B8638E4BC"><p>AES-Counter Mode for
+session key derivation </p> </li>
+<li id="GUID-1EE2C03C-C4B2-59C2-94EB-6DDAC730E667"><p>NULL mode is supported
+for encryption/decryption and authentication. </p> </li>
+</ul> <p><b>Functional Model of SRTP</b> </p> <p>The figure below describes
+the functional model of SRTP. </p> <fig id="GUID-EC50E1D8-79A0-5088-8DB1-3EA50D63ABE4">
+<image href="GUID-26D92AB3-510F-5D29-852A-D55F0C96A798_d0e548281_href.png" placement="inline"/>
+</fig> <p>The SRTP Stack is not an active component and is not network aware.
+It sits as a processing layer between the RTP stack and the network. The RTP
+stack calls for SRTP encryption before it sends the RTP Packets to the network.
+At the receiving side, the RTP stack decrypts the data received prior to normal
+RTP Processing. </p> <p>The APIs execute within the process boundary of the
+RTP Application. The SRTP APIs are generic and can be used by any RTP stack. </p> <p>The
+SRTP library implements the following functionalities: </p> <ul>
+<li id="GUID-6299069A-B48B-5A0D-A306-77B30EE91423"><p>Encryption of RTP payloads </p> </li>
+<li id="GUID-4A8EFCD5-45D4-5DDD-B847-DE1529ECD293"><p>Message authentication
+and integrity of the RTP packet </p> </li>
+<li id="GUID-18578A1C-7D83-58EE-9E80-B5C0490D9FAD"><p>Replay Protection. </p> </li>
+</ul> </section>
+<section><title>How to use SRTP?</title> <p>The SRTP stack is offered as a
+general purpose DLL. </p> <p>The capability of the DLL is ALL -TCB. </p> <p>The
+application should link to srtp.lib. </p> <p><b>Dependency</b> </p> <p>The
+SRTP implementation consists of crypto routines using the Symbian cryptographic
+libraries namely cryptospi.dll (from OS version 9.5) </p> </section>
+</conbody><related-links>
+<link href="GUID-06370120-7738-5694-9A8C-3B5B1E3A4352.dita"><linktext>Creating
+an SRTP                 Session</linktext></link>
+<link href="GUID-425A208C-5D2D-55FD-8623-9E00006E2781.dita"><linktext>Creating
+a                 Cryptographic Context</linktext></link>
+<link href="GUID-372B7A9F-261E-5F3F-B114-4BE2FE2EF7C7.dita"><linktext>Creating
+an SRTP                 Stream</linktext></link>
+<link href="GUID-79846EA2-33CD-5D01-8E96-6092C15BD839.dita"><linktext>Encrypting
+                RTCP Packet Data</linktext></link>
+<link href="GUID-922F292E-9420-593B-B226-2764C5F29DF9.dita"><linktext>Encrypting
+RTP                 Packet Data</linktext></link>
+<link href="GUID-6E1AC4C9-7CA3-503A-AFC0-BAF29CCA8290.dita"><linktext>Decrypting
+RTP                 Packet Data</linktext></link>
+<link href="GUID-F9A24A47-7A0B-5F6E-8B0A-B7A7BCC4EAFC.dita"><linktext>Decrypting
+                RTCP Packet Data</linktext></link>
+<link href="GUID-B9BD2E0A-F214-5344-91A6-E4E99F0D74C8.dita"><linktext>Updating
+Master                 Key</linktext></link>
+<link href="GUID-F9A24A47-7A0B-5F6E-8B0A-B7A7BCC4EAFC.dita"><linktext>Managing
+                Master Key</linktext></link>
 </related-links></concept>
\ No newline at end of file