diff --git a/book/source/drawio/SEIPDv1-PKESK.svg b/book/source/drawio/SEIPDv1-PKESK.svg
index c8518d1..95e1f2e 100644
--- a/book/source/drawio/SEIPDv1-PKESK.svg
+++ b/book/source/drawio/SEIPDv1-PKESK.svg
@@ -1,4 +1,447 @@
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+                <xhtml:div>Alice'</xhtml:div>
+                <xhtml:div>Encryption Key</xhtml:div>
+                <xhtml:div>0xAAAA...<xhtml:br />
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+            </xhtml:div>
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+                <xhtml:div>Bob's</xhtml:div>
+                <xhtml:div>Encryption Key</xhtml:div>
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+              </xhtml:div>
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+              <xhtml:div
+                 style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Encrypted Message</xhtml:div>
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diff --git a/book/source/drawio/SEIPDv2-PKESK.svg b/book/source/drawio/SEIPDv2-PKESK.svg
index 33a2a52..12fea96 100644
--- a/book/source/drawio/SEIPDv2-PKESK.svg
+++ b/book/source/drawio/SEIPDv2-PKESK.svg
@@ -1,4 +1,583 @@
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