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docs: update connection diagram to include user-server authentication and encryption
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Evgeny Poberezkin committed
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2 files changed
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-161
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+52
-18
@@ -1,24 +1,58 @@
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sequenceDiagram
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participant Alice
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participant App A
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participant Server A
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participant Server B
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participant App B
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participant App A as Alice's app
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participant Server A as Alice's server
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participant Server B as Bob's server
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participant App B as Bob's app
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participant Bob
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Alice ->> App A: Alice shows <AB public key> as QR code on the screen<br>(Alice's public key for Bob's eyes only)
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Bob ->> App B: Bob requests app to add connection
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App A ->> App B: Bob's app reads <AB public key> via the camera
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App B ->> Server B: Bob's app encrypts "connection request" (including <BA public key> and Bob's profile) and sends it to Bob's servers<br>{from: <BA public key hash>, to: <AB public key hash>, message: <request encrypted with AB public key>}
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Server B ->> Server A: Bob's servers use <AB public key hash> to locate Alice's servers<br>and forward encrypted message to all Alice's servers (when they are different from Bob's servers)
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Server A ->> App A: Alice's servers send the message to Alice's app
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App A ->> Alice: Alice's app matches <AB public key hash> with shown QR code<br>and decrypts Bob's profile with <AB private key> to show it
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Alice ->> App A: Alice requests app to initiate adding connection
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Note over App A: App generates:<br><AB connection key><br><A_AB server keys>
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App A ->> Server A: App registers on Alice's servers <AB public key hash> associated with <A_AB server public keys> (for recepient)
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App A ->> Server A: App subsribes to receive messages from anyone sent to <AB public key hash><br>(request is signed with <A_AB server private keys>)
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Note over App A: App shows QR code<br>for <AB public key><br>and Alice's servers
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App A -->> Bob: Alice shows to Bob <AB public key> and her servers as QR code on the screen<br>(Alice's public key for Bob only and servers she currently uses)
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Bob ->> App B: Bob requests app to read connection QR code
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App A -->> App B: Bob's app reads QR code with <AB public key> and Alice's current servers via the camera
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Note over App B: App generates<br><BA connection key><br><B_BA server keys>
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App B ->> Server B: App registers on Bob's server <BA public key hash> associated with <B_BA server public keys> (for recepient)
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App B ->> Server B: App subsribes to receive messages from anyone sent to <BA public key hash><br>(request is signed with <B_BA server private key>)
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Note over App A, App B: Now both Alice's and Bob's apps are subscribed to receive each other's messages on their servers
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Note over App B: App generates<br><B_AB server keys><br>for Alice's servers<br>and creates<br>connection request<br>including:<br>- <BA public key><br>- Bob's profile<br>- Bob's servers<br>- <B_AB public keys>
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App B ->> Server A: Bob's app encrypts "connection request" with <AB public key> and sends it to Alice's servers<br>{to: <AB public key hash>, message: <request encrypted with AB public key>}
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Server A ->> App A: Alice's servers send "connection request" to Alice's app<br>(as <AB public key hash> allows messages from anyone)
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App A ->> Alice: Alice's app matches <AB public key hash> with <AB public key><br>and decrypts Bob's profile with <AB private key> to show it
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Alice ->> App A: Alice identifies Bob's profile and accepts the connection<br>(Bob is now added to Alice's list of connections as "pending")
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App A ->> Server A: Alice's app creates "connection accepted" message (including Alice's profile) and sends it to Alice's servers<br>{from: <AB public key hash>, to: <BA public key hash>, message: <encrypted with AB public key>}
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Server A ->> Server B: Alice's servers use <BA public key hash> to locate Bob's servers<br>and forward encrypted message to all Bob's servers (when they are different from Alice's servers)
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App A ->> Server A: App registers on Alice's servers <AB public key hash> associated with <B_AB server public keys> (for sender)
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Note over Server A, Bob: Now only Bob's app can send messages for <AB public key hash> to Alice's servers<br>1) signed using <BA private key><br>2) encrypted using <AB public key><br>3) signed/encrypted using <B_AB server private/public keys>
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Note over App A: App generates<br><A_BA server keys><br>for Bob's servers<br>and creates<br>"conn. accepted"<br>message including:<br>- Alice's profile<br>- <A_BA public keys>
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App A ->> Server B: Alice's app signs "connection accepted" with <AB private key>, encrypts it with <BA public key> and sends it to Bob's servers<br>{to: <BA public key hash>, message: <encrypted with BA public key>}
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Server B ->> App B: Bob's servers send the message to Bob's app
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App B ->> Bob: Bob's app matches <AB public key hash> with read QR code<br>and decrypts the Alice's profile with Bob's <BA private key>
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App B ->> Bob: Bob's app adds Alice to the list of connections
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App B ->> Server B: "connection acknowledgement" message
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Server B ->> Server A: "connection acknowledgement" message
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Server A ->> App A: "connection acknowledgement" message
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App B ->> Bob: Bob's app matches <BA public key hash> with <BA public key><br>and decrypts the Alice's profile with Bob's <BA private key>
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App B ->> Bob: Bob's app shows Alice's profile and adds it to the connections<br>(as pending)
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App B ->> Server B: App registers on Bob's servers <BA public key hash> associated with <A_BA server public keys> (for sender)
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Note over Alice, Server B: Now only Alice's app can send messages for <BA public key hash> to Bob's servers<br>1) signed using <AB private key><br>2) encrypted using <BA public key><br>3) signed/encrypted using <A_BA server private/public keys>
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Note over App B: App creates<br>"connection<br>acknowledged"
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App B ->> Server A: Bob's app signs "connection acknowledged" with <BA private key>, encrypts it with <AB public key> and sends it to Alices's servers<br>{to: <AB public key hash>, message: <encrypted with AB public key>} (also signed/encrypted with B_AB server private/public keys)
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Server A ->> App A: Alice's servers send to app "connection acknowledged"
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App A ->> Alice: Bob is now in the Alice's list of connections as "established"
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Note over App A: App creates<br>"connection<br>acknowledged"
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App A ->> Server B: Alice's app signs "connection acknowledged" with <AB private key>, encrypts it with <BA public key> and sends it to Bob's servers<br>{to: <BA public key hash>, message: <encrypted with BA public key>} (also signed/encrypted with A_BA server private/public keys)
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Server B ->> App B: Bob's servers send to app "connection acknowledged"
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App B ->> Bob: Alice is now in the Bob's list of connections as "established"
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Note over Alice, Bob: Now Alice and Bob can exchange messages with each other, including key rotations and changes of servers they use<br>- Alice can send messages to Bob's servers to <BA public key hash> (Bob's servers allow Alice to send messages relying on A_BA keys)<br>- Bob can subscribe to messages on his servers sent to <BA public key hash> (Bob's servers allow Bob to receive messages relying on B_BA keys)<br><br>- Bob can send messages to Alice's servers to <AB public key hash> (Alice's servers allow Bob to send messages relying on B_AB keys)<br>- Alice can subscribe to messages on her servers sent to <AB public key hash> (ALice's servers allow Alice to receive messages relying on A_AB keys)
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+143
-143
@@ -1,49 +1,49 @@
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@@ -492,7 +492,7 @@
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--mermaid-font-family: '"trebuchet ms", verdana, arial';
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font: normal normal 400 normal 16px / normal "trebuchet ms", verdana, arial;
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}</style><g></g><g><line id="actor19306" x1="75" y1="5" x2="75" y2="745" class="actor-line" stroke-width="0.5px" stroke="#999"></line><rect x="0" y="0" fill="#eaeaea" stroke="#666" width="150" height="65" rx="3" ry="3" class="actor"></rect><text x="75" y="32.5" dominant-baseline="central" alignment-baseline="central" class="actor" style="text-anchor: middle; font-size: 14px;"><tspan x="75" dy="0">Alice</tspan></text></g><g><line id="actor19307" x1="275" y1="5" x2="275" y2="745" class="actor-line" stroke-width="0.5px" stroke="#999"></line><rect x="200" y="0" fill="#eaeaea" stroke="#666" width="150" height="65" rx="3" ry="3" class="actor"></rect><text x="275" y="32.5" dominant-baseline="central" alignment-baseline="central" class="actor" style="text-anchor: middle; font-size: 14px;"><tspan x="275" dy="0">App A</tspan></text></g><g><line id="actor19308" x1="475" y1="5" x2="475" y2="745" class="actor-line" stroke-width="0.5px" stroke="#999"></line><rect x="400" y="0" fill="#eaeaea" stroke="#666" width="150" height="65" rx="3" ry="3" class="actor"></rect><text x="475" y="32.5" dominant-baseline="central" alignment-baseline="central" class="actor" style="text-anchor: middle; font-size: 14px;"><tspan x="475" dy="0">Server A</tspan></text></g><g><line id="actor19309" x1="675" y1="5" x2="675" y2="745" class="actor-line" stroke-width="0.5px" stroke="#999"></line><rect x="600" y="0" fill="#eaeaea" stroke="#666" width="150" height="65" rx="3" ry="3" class="actor"></rect><text x="675" y="32.5" dominant-baseline="central" alignment-baseline="central" class="actor" style="text-anchor: middle; font-size: 14px;"><tspan x="675" dy="0">Server B</tspan></text></g><g><line id="actor19310" x1="875" y1="5" x2="875" y2="745" class="actor-line" stroke-width="0.5px" stroke="#999"></line><rect x="800" y="0" fill="#eaeaea" stroke="#666" width="150" height="65" rx="3" ry="3" class="actor"></rect><text x="875" y="32.5" dominant-baseline="central" alignment-baseline="central" class="actor" style="text-anchor: middle; font-size: 14px;"><tspan x="875" dy="0">App B</tspan></text></g><g><line id="actor19311" x1="1075" y1="5" x2="1075" y2="745" class="actor-line" stroke-width="0.5px" stroke="#999"></line><rect x="1000" y="0" fill="#eaeaea" stroke="#666" width="150" height="65" rx="3" ry="3" class="actor"></rect><text x="1075" y="32.5" dominant-baseline="central" alignment-baseline="central" class="actor" style="text-anchor: middle; font-size: 14px;"><tspan x="1075" dy="0">Bob</tspan></text></g><defs><marker id="arrowhead" refX="5" refY="2" markerWidth="6" markerHeight="4" orient="auto"><path d="M 0,0 V 4 L6,2 Z"></path></marker></defs><defs><marker id="crosshead" markerWidth="15" markerHeight="8" orient="auto" refX="16" refY="4"><path fill="black" stroke="#000000" stroke-width="1px" d="M 9,2 V 6 L16,4 Z" style="stroke-dasharray: 0, 0;"></path><path fill="none" stroke="#000000" stroke-width="1px" d="M 0,1 L 6,7 M 6,1 L 0,7" style="stroke-dasharray: 0, 0;"></path></marker></defs><defs><marker id="sequencenumber" refX="15" refY="15" markerWidth="60" markerHeight="40" orient="auto"><circle cx="15" cy="15" r="6"></circle></marker></defs><g><text x="175" y="93" class="messageText" style="text-anchor: middle;">Alice shows <AB public key> as QR code on the screen</text><text x="175" y="110" class="messageText" style="text-anchor: middle;">(Alice's public key for Bob's eyes only)</text><line x1="75" y1="100" x2="275" y2="100" class="messageLine0" stroke-width="2" stroke="black" marker-end="url(#arrowhead)" style="fill: none;"></line></g><g><text x="975" y="128" class="messageText" style="text-anchor: middle;">Bob requests app to add connection</text><line x1="1075" y1="135" x2="875" y2="135" class="messageLine0" stroke-width="2" stroke="black" marker-end="url(#arrowhead)" style="fill: none;"></line></g><g><text x="575" y="163" class="messageText" style="text-anchor: middle;">Bob's app reads <AB public key> via the camera</text><line x1="275" y1="170" x2="875" y2="170" class="messageLine0" stroke-width="2" stroke="black" marker-end="url(#arrowhead)" style="fill: none;"></line></g><g><text x="775" y="198" class="messageText" style="text-anchor: middle;">Bob's app encrypts "connection request" (including <BA public key> and Bob's profile) and sends it to Bob's servers</text><text x="775" y="215" class="messageText" style="text-anchor: middle;">{from: <BA public key hash>, to: <AB public key hash>, message: <request encrypted with AB public key>}</text><line x1="875" y1="205" x2="675" y2="205" class="messageLine0" stroke-width="2" stroke="black" marker-end="url(#arrowhead)" style="fill: none;"></line></g><g><text x="575" y="233" class="messageText" style="text-anchor: middle;">Bob's servers use <AB public key hash> to locate Alice's servers</text><text x="575" y="250" class="messageText" style="text-anchor: middle;">and forward encrypted message to all Alice's servers (when they are different from Bob's serversLine truncated
|
||||
}</style><g></g><g><line id="actor59554" x1="75" y1="5" x2="75" y2="2072" class="actor-line" stroke-width="0.5px" stroke="#999"></line><rect x="0" y="0" fill="#eaeaea" stroke="#666" width="150" height="65" rx="3" ry="3" class="actor"></rect><text x="75" y="32.5" dominant-baseline="central" alignment-baseline="central" class="actor" style="text-anchor: middle; font-size: 14px;"><tspan x="75" dy="0">Alice</tspan></text></g><g><line id="actor59555" x1="275" y1="5" x2="275" y2="2072" class="actor-line" stroke-width="0.5px" stroke="#999"></line><rect x="200" y="0" fill="#eaeaea" stroke="#666" width="150" height="65" rx="3" ry="3" class="actor"></rect><text x="275" y="32.5" dominant-baseline="central" alignment-baseline="central" class="actor" style="text-anchor: middle; font-size: 14px;"><tspan x="275" dy="0">Alice's app</tspan></text></g><g><line id="actor59556" x1="475" y1="5" x2="475" y2="2072" class="actor-line" stroke-width="0.5px" stroke="#999"></line><rect x="400" y="0" fill="#eaeaea" stroke="#666" width="150" height="65" rx="3" ry="3" class="actor"></rect><text x="475" y="32.5" dominant-baseline="central" alignment-baseline="central" class="actor" style="text-anchor: middle; font-size: 14px;"><tspan x="475" dy="0">Alice's server</tspan></text></g><g><line id="actor59557" x1="675" y1="5" x2="675" y2="2072" class="actor-line" stroke-width="0.5px" stroke="#999"></line><rect x="600" y="0" fill="#eaeaea" stroke="#666" width="150" height="65" rx="3" ry="3" class="actor"></rect><text x="675" y="32.5" dominant-baseline="central" alignment-baseline="central" class="actor" style="text-anchor: middle; font-size: 14px;"><tspan x="675" dy="0">Bob's server</tspan></text></g><g><line id="actor59558" x1="875" y1="5" x2="875" y2="2072" class="actor-line" stroke-width="0.5px" stroke="#999"></line><rect x="800" y="0" fill="#eaeaea" stroke="#666" width="150" height="65" rx="3" ry="3" class="actor"></rect><text x="875" y="32.5" dominant-baseline="central" alignment-baseline="central" class="actor" style="text-anchor: middle; font-size: 14px;"><tspan x="875" dy="0">Bob's app</tspan></text></g><g><line id="actor59559" x1="1075" y1="5" x2="1075" y2="2072" class="actor-line" stroke-width="0.5px" stroke="#999"></line><rect x="1000" y="0" fill="#eaeaea" stroke="#666" width="150" height="65" rx="3" ry="3" class="actor"></rect><text x="1075" y="32.5" dominant-baseline="central" alignment-baseline="central" class="actor" style="text-anchor: middle; font-size: 14px;"><tspan x="1075" dy="0">Bob</tspan></text></g><defs><marker id="arrowhead" refX="5" refY="2" markerWidth="6" markerHeight="4" orient="auto"><path d="M 0,0 V 4 L6,2 Z"></path></marker></defs><defs><marker id="crosshead" markerWidth="15" markerHeight="8" orient="auto" refX="16" refY="4"><path fill="black" stroke="#000000" stroke-width="1px" d="M 9,2 V 6 L16,4 Z" style="stroke-dasharray: 0, 0;"></path><path fill="none" stroke="#000000" stroke-width="1px" d="M 0,1 L 6,7 M 6,1 L 0,7" style="stroke-dasharray: 0, 0;"></path></marker></defs><defs><marker id="sequencenumber" refX="15" refY="15" markerWidth="60" markerHeight="40" orient="auto"><circle cx="15" cy="15" r="6"></circle></marker></defs><g><text x="175" y="93" class="messageText" style="text-anchor: middle;">Alice requests app to initiate adding connection</text><line x1="75" y1="100" x2="275" y2="100" class="messageLine0" stroke-width="2" stroke="black" marker-end="url(#arrowhead)" style="fill: none;"></line></g><g><rect x="200" y="110" fill="#EDF2AE" stroke="#666" width="150" height="68" rx="0" ry="0" class="note"></rect><text x="196" y="134" class="noteText"><tspan x="216">App generates:</tspan></text><text x="196" y="150" class="noteText"><tspan x="216"><AB connection key></tspan></text><text x="196" y="166" class="noteText"><tspan x="216"><A_AB server keys></tspan></text></g><g><text x="375" y="206" class="messageText" style="text-anchor: middle;">App registers on Alice's servers <AB public key hash> associated with <A_AB server public keys> (for recepient)</text><line x1="275" y1="213" x2="475" y2="213" class="messageLine0" stroke-width="2" stroke="black" marker-end="url(#arrowhead)" style="fill: none;"></line></g><g><text x="375" y="241" class="messageText" style="text-anchor: middle;">App subsribes to receive messages from anyone sent to <AB public key hash></text><text x="375" y="258" class="messageText" style="text-anchor: middle;">(request is signed with <A_AB server private keys>)</text><line x1="275" y1="248" x2="475" y2="248" class="messageLine0" stroke-width="2" stroke="black" marker-end="url(#arrowhead)" style="fill: none;"></line></g><g><rect x="200" y="258" fill="#EDF2AE" stroke="#666" width="150" height="68" rx="0" ry="0" class="note"></rect><text x="196" y="282" class="noteText"><tspan x="216">App shows QR code</tspan></text><text x="196" y="298" class="noteText"><tspan x="216">for <AB public key></tspan></text><text x="196" y="314" class="noteText"><tspan xLine truncated
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Reference in new issue
Block a user