fix codespell complaints

book/source/10-encryption.md

@@ -99,7 +99,7 @@ In both versions of SEIPD, the decryptor must have obtained a *session key* in a
 
 ### v1 SEIPD, based on MDC
 
-The [version 1 SEIPD](https://www.ietf.org/archive/id/draft-ietf-openpgp-crypto-refresh-12.html#version-one-seipd) mechanism is supported by all modern OpenPGP version 4 implementations. It was introduced in [RFC 4880](https://www.rfc-editor.org/rfc/rfc4880.html#section-5.13) as a replacement for the *SED* (Symmetricaly Encrypted Data) packet. SEIPDv1 provides integrity protection of the ciphertext using a SHA-1 checksum of the plaintext as modification detection code.
+The [version 1 SEIPD](https://www.ietf.org/archive/id/draft-ietf-openpgp-crypto-refresh-12.html#version-one-seipd) mechanism is supported by all modern OpenPGP version 4 implementations. It was introduced in [RFC 4880](https://www.rfc-editor.org/rfc/rfc4880.html#section-5.13) as a replacement for the *SED* (Symmetrically Encrypted Data) packet. SEIPDv1 provides integrity protection of the ciphertext using a SHA-1 checksum of the plaintext as modification detection code.
 
 Version 1 SEIPD can only be combined with [version 3 PKESK](https://www.ietf.org/archive/id/draft-ietf-openpgp-crypto-refresh-12.html#v3-pkesk) and/or [version 4 SKESK](https://www.ietf.org/archive/id/draft-ietf-openpgp-crypto-refresh-12.html#v4-skesk) packets.
 

book/source/11-decryption.md

@@ -169,7 +169,7 @@ The result is split into the message key and first half of the IV.
 In a first step, a message-key and half of an IV is derived from the session-key.
 ```
 
-Then, the contens of the SEIPDs encrypted data are split into chunks, which are processed sequentially. Each chunk is decrypted using AEAD with parameters from the SEIPD packet as *additional data*.
+Then, the contents of the SEIPDs encrypted data are split into chunks, which are processed sequentially. Each chunk is decrypted using AEAD with parameters from the SEIPD packet as *additional data*.
 For each chunk, the chunk index starting at `0` is passed into the function as second half of the IV.
 
 All decrypted plaintext blocks are appended to form the result of the decryption process.

book/source/drawio/SKESKv6-decryption.drawio

@@ -122,7 +122,7 @@
             </Array>
           </mxGeometry>
         </mxCell>
-        <mxCell id="h-jzOOFD72CvbkbpJgZJ-27" value="Packet Type and Verison" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;" vertex="1" parent="1">
+        <mxCell id="h-jzOOFD72CvbkbpJgZJ-27" value="Packet Type and Version" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;" vertex="1" parent="1">
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@@ -154,7 +154,7 @@
             </Array>
           </mxGeometry>
         </mxCell>
-        <mxCell id="h-jzOOFD72CvbkbpJgZJ-40" value="Packet Type and Verison" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;" vertex="1" parent="1">
+        <mxCell id="h-jzOOFD72CvbkbpJgZJ-40" value="Packet Type and Version" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;" vertex="1" parent="1">
           <mxGeometry x="240" y="400" width="140" height="30" as="geometry" />
         </mxCell>
         <mxCell id="h-jzOOFD72CvbkbpJgZJ-45" style="edgeStyle=orthogonalEdgeStyle;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=0;exitY=0.5;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" edge="1" parent="1" source="h-jzOOFD72CvbkbpJgZJ-41" target="h-jzOOFD72CvbkbpJgZJ-37">