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Add diagram for prefixed-signed message
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3 changed files with 74 additions and 1 deletions
63
book/assets/drawio/prefixed-signed-message.drawio
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63
book/assets/drawio/prefixed-signed-message.drawio
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@ -0,0 +1,63 @@
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<mxfile host="app.diagrams.net" modified="2023-12-19T17:51:29.565Z" agent="Mozilla/5.0 (X11; Linux x86_64; rv:120.0) Gecko/20100101 Firefox/120.0" etag="_bWwKk-sC-z0pngoIar_" version="22.1.11" type="device">
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<diagram name="Seite-1" id="06IJX984rhBGnz6KE12L">
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<mxGraphModel dx="2261" dy="708" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="827" pageHeight="1169" math="0" shadow="0">
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<root>
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<mxCell id="0" />
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<mxCell id="1" parent="0" />
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<mxCell id="9NkdM7txntXo-xmCDq8w-2" value="<div>Literal Data</div><div>"Hello World!"<br></div>" style="rounded=0;whiteSpace=wrap;html=1;" parent="1" vertex="1">
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<mxGeometry x="170" y="160" width="250" height="60" as="geometry" />
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</mxCell>
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<mxCell id="9NkdM7txntXo-xmCDq8w-24" style="edgeStyle=orthogonalEdgeStyle;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;startArrow=classic;startFill=1;" parent="1" source="9NkdM7txntXo-xmCDq8w-3" target="9NkdM7txntXo-xmCDq8w-16" edge="1">
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<mxGeometry relative="1" as="geometry" />
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</mxCell>
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<mxCell id="9NkdM7txntXo-xmCDq8w-26" style="edgeStyle=orthogonalEdgeStyle;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=0.5;exitY=1;exitDx=0;exitDy=0;endArrow=none;endFill=0;" parent="1" source="9NkdM7txntXo-xmCDq8w-3" edge="1">
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<mxGeometry relative="1" as="geometry">
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<mxPoint x="310" y="360" as="targetPoint" />
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<Array as="points">
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<mxPoint x="-70" y="360" />
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</Array>
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</mxGeometry>
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</mxCell>
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<mxCell id="9NkdM7txntXo-xmCDq8w-3" value="<div>Signature</div><div>Hash: SHA384<br></div><div>Issuer: B0B0<br></div>" style="rounded=0;whiteSpace=wrap;html=1;" parent="1" vertex="1">
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<mxGeometry x="-150" y="160" width="160" height="60" as="geometry" />
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</mxCell>
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<mxCell id="9NkdM7txntXo-xmCDq8w-21" style="edgeStyle=orthogonalEdgeStyle;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=0.5;exitY=1;exitDx=0;exitDy=0;startArrow=none;startFill=0;endArrow=none;endFill=0;" parent="1" source="9NkdM7txntXo-xmCDq8w-7" edge="1">
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<mxGeometry relative="1" as="geometry">
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<mxPoint x="310" y="270" as="targetPoint" />
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<Array as="points">
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<mxPoint x="90" y="270" />
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</Array>
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</mxGeometry>
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</mxCell>
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<mxCell id="9NkdM7txntXo-xmCDq8w-22" style="edgeStyle=orthogonalEdgeStyle;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=0.5;exitY=1;exitDx=0;exitDy=0;startArrow=classic;startFill=1;" parent="1" source="9NkdM7txntXo-xmCDq8w-7" target="9NkdM7txntXo-xmCDq8w-14" edge="1">
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<mxGeometry relative="1" as="geometry" />
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</mxCell>
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<mxCell id="9NkdM7txntXo-xmCDq8w-7" value="<div>Signature</div><div>Hash: SHA512<br></div><div>Issuer: B0B1<br></div>" style="rounded=0;whiteSpace=wrap;html=1;" parent="1" vertex="1">
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<mxGeometry x="10" y="160" width="160" height="60" as="geometry" />
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</mxCell>
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<mxCell id="9NkdM7txntXo-xmCDq8w-19" style="edgeStyle=orthogonalEdgeStyle;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=0.1;exitY=0.5;exitDx=0;exitDy=0;exitPerimeter=0;endArrow=oval;endFill=1;" parent="1" source="9NkdM7txntXo-xmCDq8w-9" edge="1">
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<mxGeometry relative="1" as="geometry">
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<mxPoint x="310" y="270" as="targetPoint" />
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</mxGeometry>
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</mxCell>
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<mxCell id="9NkdM7txntXo-xmCDq8w-23" style="edgeStyle=orthogonalEdgeStyle;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=0.1;exitY=0.5;exitDx=0;exitDy=0;exitPerimeter=0;endArrow=oval;endFill=1;" parent="1" source="9NkdM7txntXo-xmCDq8w-9" edge="1">
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<mxGeometry relative="1" as="geometry">
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<mxPoint x="310" y="360" as="targetPoint" />
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</mxGeometry>
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</mxCell>
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<mxCell id="9NkdM7txntXo-xmCDq8w-9" value="" style="shape=curlyBracket;whiteSpace=wrap;html=1;rounded=1;labelPosition=left;verticalLabelPosition=middle;align=right;verticalAlign=middle;rotation=-90;" parent="1" vertex="1">
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<mxGeometry x="300" y="140" width="20" height="220" as="geometry" />
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</mxCell>
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<mxCell id="9NkdM7txntXo-xmCDq8w-10" value=""Hello World!" is hashed" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;" parent="1" vertex="1">
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<mxGeometry x="237.5" y="220" width="145" height="30" as="geometry" />
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</mxCell>
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<mxCell id="9NkdM7txntXo-xmCDq8w-14" value="SHA512 Hash" style="rounded=1;whiteSpace=wrap;html=1;" parent="1" vertex="1">
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<mxGeometry x="30" y="300" width="120" height="40" as="geometry" />
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</mxCell>
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<mxCell id="9NkdM7txntXo-xmCDq8w-16" value="SHA384 Hash" style="rounded=1;whiteSpace=wrap;html=1;" parent="1" vertex="1">
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<mxGeometry x="-130" y="390" width="120" height="40" as="geometry" />
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</mxCell>
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</root>
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</mxGraphModel>
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</diagram>
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</mxfile>
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3
book/assets/drawio/prefixed-signed-message.svg
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3
book/assets/drawio/prefixed-signed-message.svg
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@ -76,7 +76,7 @@ A {term}`one-pass signed<One-pass signed Message>` {term}`OpenPGP message` consi
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```{figure} plain_svg/ops-signed-message.svg
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:name: fig-ops-signed-message
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:alt: Depicts the structure of a one-pass-signed message.
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:alt: Depicts the structure of a one-pass-signed message. Two one-pass-signatures lead the literal data packet, followed by two signature packets. Arrows show, how the hash-algorithm field of the one-pass-signatures is inspected in order to initiate the hashing procedure.
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The structure of a one-pass signed message.
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```
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@ -126,6 +126,13 @@ In this format, the signature packets are stored ahead of the message itself:
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2. [**Literal data packet**](https://www.ietf.org/archive/id/draft-ietf-openpgp-crypto-refresh-12.html#lit): This contains the original data (e.g., the body of a message), without additional interpretation or conversion.
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```{figure} plain_svg/prefixed-signed-message.svg
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:name: fig-prefixed-signed-message
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:alt: Depicts the structure of a prefixed-signed message. As an example, two signature packets lead a literal data packet. Arrows show, how the signatures hash algorithm field is inspected to start the hashing procedure.
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Structure of a prefixed-signed message.
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```
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Compared to a {term}`one-pass signed message`, there are no {term}`one-pass signature packets<One-pass Signature Packet>` in this format, and the (otherwise equivalent) {term}`signature packet(s)<signature packet>` are stored ahead of the signed data.
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For verification, this is equally convenient as the one-pass signed message form.
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