From: Pekka Riikonen <priikone@silcnet.org>
Date: Wed, 1 Aug 2001 20:07:00 +0000 (+0000)
Subject: 	updates.
X-Git-Tag: robodoc-323~15
X-Git-Url: http://git.silcnet.org/gitweb/?p=silc.git;a=commitdiff_plain;h=cd3475071bc235d88c517b62bae5d375c256ee8f

	updates.
---

diff --git a/doc/whitepaper/silc_network.edg b/doc/whitepaper/silc_network.edg
index 58d184d4..3198926e 100644
--- a/doc/whitepaper/silc_network.edg
+++ b/doc/whitepaper/silc_network.edg
@@ -3,9 +3,9 @@ Version 3.50
 
 ## Globals Section:
 
-X 198
-Y 137
-Scale 97
+X -296
+Y 40
+Scale 100
 PosterRows 1
 PosterCols 1
 Color1 221,208,221
@@ -16,13 +16,13 @@ Color5 0,255,255
 Color6 0,0,255
 Color7 0,0,160
 Color8 128,0,128
-Color9 239,231,239
+Color9 243,237,243
 Color10 219,219,219
 Color11 244,244,244
 Color12 255,242,230
 Color13 240,255,240
 Color14 0,128,0
-Color15 128,128,255
+Color15 223,223,255
 Color16 255,255,0
 GridX 32
 GridY 32
@@ -45,11 +45,11 @@ SBarLblHeight 32
 SBarConHeight 24
 Parent ""
 LargeDropMenus FALSE
-LastEnd "block shorter"
-LastEndLen 36
+LastEnd "block"
+LastEndLen 25
 ConPointMarks 0
 CornerRadius 18
-Template "General Purpose Diagram.EDG"
+Template "silc_template.edg"
 
 DevMode 580
 {
@@ -74,11 +74,10 @@ DevMode 580
 00000100
 }
 
-DevNames 68
+DevNames 56
 {
 080011002200010077696E73706F6F6C004850204C617365724A657420313130
-30004C5054313A00000000000000000000000000000000002E006500DC455D00
-CC395900
+30004C5054313A0000000000000000000000000000000000
 }
 
 Preview 4388
@@ -1466,6 +1465,23 @@ FigureStyle "SILC Client"
   TypeFace "Arial"
 }
 
+FigureStyle "SILC Network Cloud"
+{
+  HasButton TRUE
+  Height 480
+  Width 672
+  BorderColor 227,225,255
+  FillColor 240,240,255
+  TextColor 192,192,192
+  BorderWidth 3
+  TextFormat 0x0A22
+  Behavior 0x00024E12
+  Symbol "cloud"
+  TypeSize 18
+  TypeWeight 700
+  TypeFace "Arial"
+}
+
 ## Connector Styles Section:
 
 ConnectorStyle "Plain"
@@ -1691,13 +1707,26 @@ ConnectorStyle "SILC Server To Router"
   Behavior 0x00000000
 }
 
+ConnectorStyle "Router to Router Prime"
+{
+  HasButton TRUE
+  End1 "block"
+  End2 "block"
+  End1Length 36
+  End2Length 36
+  LineWidth 3
+  EndBorderWidth 2
+  Color 130,130,130
+  Behavior 0x00000008
+}
+
 ## Figures & Connectors Section:
 
 Figure 1
 {
   Style "SILC INFO"
   Text "INFO"
-  Bounds 480,1856,1568,2112
+  Bounds 448,1536,1536,1792
   BorderColor 192,192,192
   FillColor 252,252,252
   TextColor 130,130,130
@@ -1720,8 +1749,8 @@ Connector 2
   Style "SILC Server To Router"
   Figure1 -1
   Figure2 -1
-  EndPoint1 640,1936
-  EndPoint2 912,1936
+  EndPoint1 608,1616
+  EndPoint2 880,1616
   SuppressEnd1 FALSE
   SuppressEnd2 FALSE
   End1 "block short"
@@ -1737,7 +1766,7 @@ Figure 3
 {
   Style "SILC Background"
   Text ""
-  Bounds 352,464,1696,1840
+  Bounds 320,144,1664,1520
   BorderColor 192,192,192
   FillColor 245,241,245
   TextColor 130,130,130
@@ -1756,7 +1785,7 @@ Figure 4
 {
   Style "Rectangle"
   Text "Server"
-  Bounds 576,1072,768,1168
+  Bounds 544,752,736,848
   BorderColor 130,130,130
   FillColor 240,255,240
   TextColor 130,130,130
@@ -1773,7 +1802,7 @@ Figure 5
 {
   Style "SILC Router"
   Text "Router"
-  Bounds 688,912,944,1040
+  Bounds 656,592,912,720
   BorderColor 130,130,130
   FillColor 255,242,230
   TextColor 130,130,130
@@ -1790,7 +1819,7 @@ Figure 6
 {
   Style "Rectangle"
   Text "Server"
-  Bounds 880,1072,1072,1168
+  Bounds 848,752,1040,848
   BorderColor 130,130,130
   FillColor 244,244,244
   TextColor 130,130,130
@@ -1807,7 +1836,7 @@ Figure 7
 {
   Style "Rectangle"
   Text "Server"
-  Bounds 1008,928,1200,1024
+  Bounds 976,608,1168,704
   BorderColor 130,130,130
   FillColor 244,244,244
   TextColor 130,130,130
@@ -1824,7 +1853,7 @@ Figure 8
 {
   Style "Rectangle"
   Text "Server"
-  Bounds 864,784,1056,880
+  Bounds 832,464,1024,560
   BorderColor 130,130,130
   FillColor 244,244,244
   TextColor 130,130,130
@@ -1841,7 +1870,7 @@ Figure 9
 {
   Style "SILC Server"
   Text "Server"
-  Bounds 576,784,768,880
+  Bounds 544,464,736,560
   BorderColor 130,130,130
   FillColor 244,244,244
   TextColor 130,130,130
@@ -1858,7 +1887,7 @@ Figure 10
 {
   Style "Rectangle"
   Text "Server"
-  Bounds 432,928,624,1024
+  Bounds 400,608,592,704
   BorderColor 130,130,130
   FillColor 244,244,244
   TextColor 130,130,130
@@ -1875,7 +1904,7 @@ Figure 11
 {
   Style "Rectangle"
   Text "Server"
-  Bounds 992,1568,1184,1664
+  Bounds 960,1248,1152,1344
   BorderColor 130,130,130
   FillColor 240,255,240
   TextColor 130,130,130
@@ -1892,7 +1921,7 @@ Figure 12
 {
   Style "Rectangle"
   Text "Router"
-  Bounds 1104,1408,1360,1536
+  Bounds 1072,1088,1328,1216
   BorderColor 130,130,130
   FillColor 255,242,230
   TextColor 130,130,130
@@ -1909,7 +1938,7 @@ Figure 13
 {
   Style "Rectangle"
   Text "Server"
-  Bounds 1296,1568,1488,1664
+  Bounds 1264,1248,1456,1344
   BorderColor 130,130,130
   FillColor 244,244,244
   TextColor 130,130,130
@@ -1926,7 +1955,7 @@ Figure 14
 {
   Style "Rectangle"
   Text "Server"
-  Bounds 1424,1424,1616,1520
+  Bounds 1392,1104,1584,1200
   BorderColor 130,130,130
   FillColor 244,244,244
   TextColor 130,130,130
@@ -1943,7 +1972,7 @@ Figure 15
 {
   Style "Rectangle"
   Text "Server"
-  Bounds 1280,1280,1472,1376
+  Bounds 1248,960,1440,1056
   BorderColor 130,130,130
   FillColor 240,255,240
   TextColor 130,130,130
@@ -1960,7 +1989,7 @@ Figure 16
 {
   Style "Rectangle"
   Text "Server"
-  Bounds 992,1280,1184,1376
+  Bounds 960,960,1152,1056
   BorderColor 130,130,130
   FillColor 244,244,244
   TextColor 130,130,130
@@ -1977,7 +2006,7 @@ Figure 17
 {
   Style "Rectangle"
   Text "Server"
-  Bounds 848,1424,1040,1520
+  Bounds 816,1104,1008,1200
   BorderColor 130,130,130
   FillColor 244,244,244
   TextColor 130,130,130
@@ -1994,7 +2023,7 @@ Figure 18
 {
   Style "Rectangle"
   Text "Client"
-  Bounds 448,688,544,752
+  Bounds 416,368,512,432
   BorderColor 130,130,130
   FillColor 219,219,219
   TextColor 130,130,130
@@ -2010,7 +2039,7 @@ Figure 18
 Figure 19
 {
   Text ""
-  Bounds 841,1337,856,1352
+  Bounds 809,1017,824,1032
   FillColor 0,0,0
   BorderWidth 0
   BindToStyle FALSE
@@ -2025,8 +2054,8 @@ Connector 20
 {
   Figure1 5
   Figure2 19
-  EndPoint1 822,1040
-  EndPoint2 848,1344
+  EndPoint1 790,720
+  EndPoint2 816,1024
   SuppressEnd1 FALSE
   SuppressEnd2 TRUE
   End1 "block"
@@ -2046,8 +2075,8 @@ Connector 21
   Style "Flow Closed 2"
   Figure1 19
   Figure2 12
-  EndPoint1 848,1344
-  EndPoint2 1104,1429
+  EndPoint1 816,1024
+  EndPoint2 1072,1109
   SuppressEnd1 TRUE
   SuppressEnd2 FALSE
   End1 "block"
@@ -2064,7 +2093,7 @@ Connector 21
 Figure 22
 {
   Text ""
-  Bounds 697,1609,712,1624
+  Bounds 665,1289,680,1304
   FillColor 0,0,0
   BorderWidth 0
   BindToStyle FALSE
@@ -2080,8 +2109,8 @@ Connector 23
   Style "SILC Router to Router"
   Figure1 22
   Figure2 -1
-  EndPoint1 704,1616
-  EndPoint2 480,1808
+  EndPoint1 672,1296
+  EndPoint2 448,1488
   SuppressEnd1 TRUE
   SuppressEnd2 FALSE
   End1 "block"
@@ -2100,8 +2129,8 @@ Connector 24
   Style "Flow Closed 2"
   Figure1 12
   Figure2 22
-  EndPoint1 1104,1507
-  EndPoint2 704,1616
+  EndPoint1 1072,1187
+  EndPoint2 672,1296
   SuppressEnd1 FALSE
   SuppressEnd2 TRUE
   End1 "block"
@@ -2118,7 +2147,7 @@ Connector 24
 Figure 25
 {
   Text ""
-  Bounds 873,649,888,664
+  Bounds 841,329,856,344
   FillColor 0,0,0
   BorderWidth 0
   BindToStyle FALSE
@@ -2134,8 +2163,8 @@ Connector 26
   Style "Flow Closed 2"
   Figure1 5
   Figure2 25
-  EndPoint1 829,912
-  EndPoint2 880,656
+  EndPoint1 797,592
+  EndPoint2 848,336
   SuppressEnd1 FALSE
   SuppressEnd2 TRUE
   End1 "block"
@@ -2154,8 +2183,8 @@ Connector 27
   Style "Flow Closed 2"
   Figure1 25
   Figure2 -1
-  EndPoint1 880,656
-  EndPoint2 1632,560
+  EndPoint1 848,336
+  EndPoint2 1600,240
   SuppressEnd1 TRUE
   SuppressEnd2 FALSE
   End1 "block"
@@ -2175,7 +2204,7 @@ Figure 28
   Style "Title"
   Text "Another Router\line \line \line \line \line \line \line \line \li-
 ne Cell B"
-  Bounds 1391,585,1676,1056
+  Bounds 1359,265,1644,736
   TextColor 130,130,130
   TextFormat 0x0022
   Behavior 0x00824192
@@ -2189,8 +2218,8 @@ Connector 29
   Style "Flow Closed"
   Figure1 10
   Figure2 5
-  EndPoint1 624,976
-  EndPoint2 688,976
+  EndPoint1 592,656
+  EndPoint2 656,656
   SuppressEnd1 FALSE
   SuppressEnd2 FALSE
   End1 "block short"
@@ -2207,8 +2236,8 @@ Connector 30
   Style "SILC Server To Router"
   Figure1 9
   Figure2 5
-  EndPoint1 720,880
-  EndPoint2 752,912
+  EndPoint1 688,560
+  EndPoint2 720,592
   SuppressEnd1 FALSE
   SuppressEnd2 FALSE
   End1 "block short"
@@ -2225,8 +2254,8 @@ Connector 31
   Style "Flow Closed"
   Figure1 8
   Figure2 5
-  EndPoint1 912,880
-  EndPoint2 880,912
+  EndPoint1 880,560
+  EndPoint2 848,592
   SuppressEnd1 FALSE
   SuppressEnd2 FALSE
   End1 "block short"
@@ -2242,8 +2271,8 @@ Connector 32
 {
   Figure1 7
   Figure2 5
-  EndPoint1 1008,976
-  EndPoint2 944,976
+  EndPoint1 976,656
+  EndPoint2 912,656
   SuppressEnd1 FALSE
   SuppressEnd2 FALSE
   End1 "block short"
@@ -2261,7 +2290,7 @@ Figure 33
   Label TRUE
   Style "Title"
   Text "SILC Network"
-  Bounds 790,494,1251,576
+  Bounds 758,174,1219,256
   TextColor 192,192,192
   TextFormat 0x0022
   Behavior 0x00824192
@@ -2275,7 +2304,7 @@ Figure 34
 {
   Style "Rectangle"
   Text "Client"
-  Bounds 576,656,672,720
+  Bounds 544,336,640,400
   BorderColor 130,130,130
   FillColor 219,219,219
   TextColor 130,130,130
@@ -2294,7 +2323,7 @@ Figure 35
 {
   Style "Rectangle"
   Text "Client"
-  Bounds 416,784,512,848
+  Bounds 384,464,480,528
   BorderColor 130,130,130
   FillColor 219,219,219
   TextColor 130,130,130
@@ -2311,7 +2340,7 @@ Figure 36
 {
   Style "Rectangle"
   Text "Client"
-  Bounds 1024,688,1120,752
+  Bounds 992,368,1088,432
   BorderColor 130,130,130
   FillColor 219,219,219
   TextColor 130,130,130
@@ -2328,7 +2357,7 @@ Figure 37
 {
   Style "Rectangle"
   Text "Client"
-  Bounds 1104,784,1200,848
+  Bounds 1072,464,1168,528
   BorderColor 130,130,130
   FillColor 219,219,219
   TextColor 130,130,130
@@ -2345,7 +2374,7 @@ Figure 38
 {
   Style "Rectangle"
   Text "Client"
-  Bounds 1200,704,1296,768
+  Bounds 1168,384,1264,448
   BorderColor 130,130,130
   FillColor 219,219,219
   TextColor 130,130,130
@@ -2362,7 +2391,7 @@ Figure 39
 {
   Style "Rectangle"
   Text "Client"
-  Bounds 1248,880,1344,944
+  Bounds 1216,560,1312,624
   BorderColor 130,130,130
   FillColor 219,219,219
   TextColor 130,130,130
@@ -2379,7 +2408,7 @@ Figure 40
 {
   Style "Rectangle"
   Text "Client"
-  Bounds 1408,1072,1504,1136
+  Bounds 1376,752,1472,816
   BorderColor 130,130,130
   FillColor 219,219,219
   TextColor 130,130,130
@@ -2396,7 +2425,7 @@ Figure 41
 {
   Style "Rectangle"
   Text "Client"
-  Bounds 1280,784,1376,848
+  Bounds 1248,464,1344,528
   BorderColor 130,130,130
   FillColor 219,219,219
   TextColor 130,130,130
@@ -2413,7 +2442,7 @@ Figure 42
 {
   Style "Rectangle"
   Text "Client"
-  Bounds 416,1088,512,1152
+  Bounds 384,768,480,832
   BorderColor 130,130,130
   FillColor 219,219,219
   TextColor 130,130,130
@@ -2430,7 +2459,7 @@ Figure 43
 {
   Style "Rectangle"
   Text "Client"
-  Bounds 464,1200,560,1264
+  Bounds 432,880,528,944
   BorderColor 130,130,130
   FillColor 219,219,219
   TextColor 130,130,130
@@ -2447,7 +2476,7 @@ Figure 44
 {
   Style "Rectangle"
   Text "Client"
-  Bounds 640,1216,736,1280
+  Bounds 608,896,704,960
   BorderColor 130,130,130
   FillColor 219,219,219
   TextColor 130,130,130
@@ -2464,7 +2493,7 @@ Figure 45
 {
   Style "Rectangle"
   Text "Client"
-  Bounds 1344,1184,1440,1248
+  Bounds 1312,864,1408,928
   BorderColor 130,130,130
   FillColor 219,219,219
   TextColor 130,130,130
@@ -2481,7 +2510,7 @@ Figure 46
 {
   Style "Rectangle"
   Text "Client"
-  Bounds 1536,1120,1632,1184
+  Bounds 1504,800,1600,864
   BorderColor 130,130,130
   FillColor 219,219,219
   TextColor 130,130,130
@@ -2498,7 +2527,7 @@ Figure 47
 {
   Style "Rectangle"
   Text "Client"
-  Bounds 1504,1232,1600,1296
+  Bounds 1472,912,1568,976
   BorderColor 130,130,130
   FillColor 219,219,219
   TextColor 130,130,130
@@ -2515,7 +2544,7 @@ Figure 48
 {
   Style "Rectangle"
   Text "Client"
-  Bounds 1552,1680,1648,1744
+  Bounds 1520,1360,1616,1424
   BorderColor 130,130,130
   FillColor 219,219,219
   TextColor 130,130,130
@@ -2532,7 +2561,7 @@ Figure 49
 {
   Style "Rectangle"
   Text "Client"
-  Bounds 1424,1696,1520,1760
+  Bounds 1392,1376,1488,1440
   BorderColor 130,130,130
   FillColor 219,219,219
   TextColor 130,130,130
@@ -2549,7 +2578,7 @@ Figure 50
 {
   Style "Rectangle"
   Text "Client"
-  Bounds 1536,1568,1632,1632
+  Bounds 1504,1248,1600,1312
   BorderColor 130,130,130
   FillColor 219,219,219
   TextColor 130,130,130
@@ -2566,7 +2595,7 @@ Figure 51
 {
   Style "Rectangle"
   Text "Client"
-  Bounds 848,1648,944,1712
+  Bounds 816,1328,912,1392
   BorderColor 130,130,130
   FillColor 219,219,219
   TextColor 130,130,130
@@ -2583,7 +2612,7 @@ Figure 52
 {
   Style "SILC Client"
   Text "Client"
-  Bounds 528,1296,624,1360
+  Bounds 496,976,592,1040
   BorderColor 130,130,130
   FillColor 219,219,219
   TextColor 130,130,130
@@ -2600,7 +2629,7 @@ Figure 53
 {
   Style "Rectangle"
   Text "Client"
-  Bounds 1152,1712,1248,1776
+  Bounds 1120,1392,1216,1456
   BorderColor 130,130,130
   FillColor 219,219,219
   TextColor 130,130,130
@@ -2617,7 +2646,7 @@ Figure 54
 {
   Style "Rectangle"
   Text "Client"
-  Bounds 992,1728,1088,1792
+  Bounds 960,1408,1056,1472
   BorderColor 130,130,130
   FillColor 219,219,219
   TextColor 130,130,130
@@ -2634,8 +2663,8 @@ Connector 55
 {
   Figure1 4
   Figure2 5
-  EndPoint1 720,1072
-  EndPoint2 752,1040
+  EndPoint1 688,752
+  EndPoint2 720,720
   SuppressEnd1 FALSE
   SuppressEnd2 FALSE
   End1 "block short"
@@ -2652,8 +2681,8 @@ Connector 56
 {
   Figure1 6
   Figure2 5
-  EndPoint1 922,1072
-  EndPoint2 888,1040
+  EndPoint1 890,752
+  EndPoint2 856,720
   SuppressEnd1 FALSE
   SuppressEnd2 FALSE
   End1 "block short"
@@ -2670,8 +2699,8 @@ Connector 57
 {
   Figure1 16
   Figure2 12
-  EndPoint1 1136,1376
-  EndPoint2 1168,1408
+  EndPoint1 1104,1056
+  EndPoint2 1136,1088
   SuppressEnd1 FALSE
   SuppressEnd2 FALSE
   End1 "block short"
@@ -2688,8 +2717,8 @@ Connector 58
 {
   Figure1 15
   Figure2 12
-  EndPoint1 1328,1376
-  EndPoint2 1296,1408
+  EndPoint1 1296,1056
+  EndPoint2 1264,1088
   SuppressEnd1 FALSE
   SuppressEnd2 FALSE
   End1 "block short"
@@ -2706,8 +2735,8 @@ Connector 59
 {
   Figure1 14
   Figure2 12
-  EndPoint1 1424,1472
-  EndPoint2 1360,1472
+  EndPoint1 1392,1152
+  EndPoint2 1328,1152
   SuppressEnd1 FALSE
   SuppressEnd2 FALSE
   End1 "block short"
@@ -2724,8 +2753,8 @@ Connector 60
 {
   Figure1 13
   Figure2 12
-  EndPoint1 1338,1568
-  EndPoint2 1304,1536
+  EndPoint1 1306,1248
+  EndPoint2 1272,1216
   SuppressEnd1 FALSE
   SuppressEnd2 FALSE
   End1 "block short"
@@ -2742,8 +2771,8 @@ Connector 61
 {
   Figure1 11
   Figure2 12
-  EndPoint1 1136,1568
-  EndPoint2 1168,1536
+  EndPoint1 1104,1248
+  EndPoint2 1136,1216
   SuppressEnd1 FALSE
   SuppressEnd2 FALSE
   End1 "block short"
@@ -2760,8 +2789,8 @@ Connector 62
 {
   Figure1 17
   Figure2 12
-  EndPoint1 1040,1472
-  EndPoint2 1104,1472
+  EndPoint1 1008,1152
+  EndPoint2 1072,1152
   SuppressEnd1 FALSE
   SuppressEnd2 FALSE
   End1 "block short"
@@ -2779,8 +2808,8 @@ Connector 63
   Style "SILC Router to Router"
   Figure1 -1
   Figure2 -1
-  EndPoint1 624,1904
-  EndPoint2 928,1904
+  EndPoint1 592,1584
+  EndPoint2 896,1584
   SuppressEnd1 FALSE
   SuppressEnd2 FALSE
   End1 "block"
@@ -2799,7 +2828,7 @@ Figure 64
   Label TRUE
   Style "Title"
   Text "Router to Router Connection\line Server to Router Connection"
-  Bounds 1037,1888,1400,1951
+  Bounds 1005,1568,1368,1631
   TextColor 130,130,130
   TextFormat 0x0024
   Behavior 0x00824192
@@ -2816,7 +2845,7 @@ Figure 65
 {
   Style "Rectangle"
   Text ""
-  Bounds 624,2064,912,2096
+  Bounds 592,1744,880,1776
   BorderColor 130,130,130
   FillColor 219,219,219
   TextColor 130,130,130
@@ -2834,7 +2863,7 @@ Figure 66
 {
   Style "Rectangle"
   Text ""
-  Bounds 624,2032,912,2064
+  Bounds 592,1712,880,1744
   BorderColor 130,130,130
   FillColor 244,244,244
   TextColor 130,130,130
@@ -2852,7 +2881,7 @@ Figure 67
 {
   Style "Rectangle"
   Text ""
-  Bounds 624,1968,912,2000
+  Bounds 592,1648,880,1680
   BorderColor 130,130,130
   FillColor 255,242,230
   TextColor 130,130,130
@@ -2870,7 +2899,7 @@ Figure 68
 {
   Style "Rectangle"
   Text ""
-  Bounds 624,2000,912,2032
+  Bounds 592,1680,880,1712
   BorderColor 130,130,130
   FillColor 240,255,240
   TextColor 130,130,130
@@ -2889,7 +2918,7 @@ Figure 69
   Label TRUE
   Style "Title"
   Text "Router\line Server/Backup Router\line Server\line Client"
-  Bounds 1037,1971,1320,2096
+  Bounds 1005,1651,1288,1776
   TextColor 130,130,130
   TextFormat 0x0024
   Behavior 0x00824192
@@ -2905,7 +2934,7 @@ Figure 70
   Style "Title"
   Text "\line \line \line \line \line \line Cell A\line \line \line \line-
  \line \line \line Another Router"
-  Bounds 387,1112,672,1771
+  Bounds 355,792,640,1451
   TextColor 130,130,130
   TextFormat 0x0022
   Behavior 0x00824192
diff --git a/doc/whitepaper/silc_protocol.html b/doc/whitepaper/silc_protocol.html
index 39b1cb7c..2adc9615 100644
--- a/doc/whitepaper/silc_protocol.html
+++ b/doc/whitepaper/silc_protocol.html
@@ -270,9 +270,44 @@ The rekey process can be executed with or without the Perfect Forward
 Secrecy (PFS).
 <p>
 
-<img src="silc_ske.JPG" alt="SILC Key Exchange (SKE) Protocol" align="center" border"0">
-<p><br>
-
+The security properties that are used in the SILC session are also
+negotiated during the SKE.  The protocol has initiator and responder.
+The initator is the one who starts the SKE negotiation and responder is
+the one who receives the SKE negotiation.  When the protocol is started
+initiator sends a list of security properties that it supports.  The
+responder then selects the security properties it supports and sends
+its reply to the initiator.  The security properties includes ciphers,
+hash functions, public key algorithms, HMAC functions and other
+security properties.  The responder can always choose the properties
+it supports.
+<p>
+
+After the security properties are selected the protocol continues
+by performing the Diffie-Hellman key exchange algorithm.  At the same
+time the intiator and responder also sends their public keys or
+certificates to each other.  The responder also computes a signature
+that the initiator will verify.  It is also possible to perform a
+mutual authentication when both of the parties computes a signature
+which are verified by each other independently.  If any of the phases
+of the protocol are to fail the connection is closed immeadiately.
+<p>
+
+The public key or certificate that is received during the SKE protocol
+must be verified.  If it is not verified it would be possible to 
+execute a man-in-the-middle attack against the SKE protocol.  If
+certificates are used they can be verified by a third party Certification
+Authority (CA).  Verifying a public key requires either confirming
+a fingerprint of the public key over phone or email, or the server
+can for example publish the fingerprint (and the public key) on some 
+website.  In real life systems accepting the public key without
+verification, however is often desired.  In many security protocols,
+such as in SSH2, the public key is accepted without verification
+in the first time when the connection is created.  The public key is
+then cached on local hard disk.  When connecting next time to the
+server the public key on local cache is verified against the public
+key server sent.  In real life this works most of the time.  However,
+if client (or server) cannot trust this, it must find some other way
+to verify the received public key or certificate.
 
 
 <p><br>
@@ -612,7 +647,7 @@ protocol clients can fetch other clients public keys from servers.
 However, the servers may not have authenticated the fetched public key so
 that should not be fully trusted.  Use of certificates can solve the
 problem.  The receiver's certificate could be authenticated by a third
-party Certificate Authority (CA).
+party Certification Authority (CA).
 
 <p>
 Usually verifying the public key is not a problem since the receiver
@@ -670,7 +705,10 @@ For comprehensive introduction to cryptography refer to the
 - Certificate
 <p>
 
-- Certificate Authority (CA)
+- Certification Authority (CA)
+<p>
+
+- Diffie-Hellman key exchange
 <p>
 
 - Encryption