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Lecture 3 typo #9

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Lecture 3 typo #9

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ee386c5
lecture3: fixed "relecote" typo in http pipelining
adamhosticka Jan 3, 2025
288ce79
lecture3: "dupplicate" typo
adamhosticka Jan 3, 2025
500f317
lecture3: "provives" typo
adamhosticka Jan 3, 2025
76cfc7f
lecture3: "negoriate" typo
adamhosticka Jan 3, 2025
a40fb39
lecture3: fixed "dsp_port" typo
adamhosticka Jan 5, 2025
755edfa
lecture3: fixed "server respons" typo
adamhosticka Jan 5, 2025
eba6d16
lecture3: fixed "encrpyed" typo
adamhosticka Jan 5, 2025
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14 changes: 7 additions & 7 deletions lecture3.html
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Original file line number Diff line number Diff line change
Expand Up @@ -117,11 +117,11 @@ <h1>Socket</h1>
<ul class="xx-small">
<li>Handshaking (connection establishment)</li>
<ul>
<li>The server listens at <code>[dst_ip,dsp_port]</code></li>
<li>The server listens at <code>[dst_ip,dst_port]</code></li>
<li>Three-way handshake:</li>
<ul>
<li>the client sends a connection request with TCP flags (SYN, x=rand)</li>
<li>the server respons with its own TCP flags (SYN ACK, x+1 y=rand)</li>
<li>the server responds with its own TCP flags (SYN ACK, x+1 y=rand)</li>
<li>the client acknowledges the response, can send data along (ACK, y+1 x+1)</li>
</ul>
<li>Result is a socket (virtual communication channel) with unique identification:<br />
Expand Down Expand Up @@ -376,7 +376,7 @@ <h1>HTTP pipelining</h1>
<ul class="xx-small">
<li>Important optimization &ndash; response queuing</li>
<ul>
<li>Allows to relecote FIFO queue from the client to the server</li>
<li>Allows to relocate FIFO queue from the client to the server</li>
</ul>
<li>Requests are pipelined one after another</li>
<ul>
Expand All @@ -399,7 +399,7 @@ <h1>HTTP pipelining</h1>
<li>Buffered (large or many) responses may exhaust server resources</li>
<li>A failed response may terminate TCP connection</li>
<ul>
<li>A client must request all sub-sequent resources again (dupplicate processing)
<li>A client must request all sub-sequent resources again (duplicate processing)
</ul>
<li>Some intermediaries may not support pipelining and abort connection</li>
</ul>
Expand Down Expand Up @@ -777,7 +777,7 @@ <h1>TLS Services</h1>
</ul>
<li>Integrity</li>
<ul>
<li>TLS provives message framing mechanism</li>
<li>TLS provides message framing mechanism</li>
<li>Every message is signed with Message Authentication Code (MAC)</li>
<ul>
<li>MAC hashes data in a message and combines the resulting hash with a key (negotiated during the TLS
Expand Down Expand Up @@ -814,7 +814,7 @@ <h1>Key Exchange</h1>
<ul>
<li>The client generates a symetric key</li>
<li>The client encrypts the key with the server's public key</li>
<li>The client sends the encrpyed key to the server</li>
<li>The client sends the encrypted key to the server</li>
<li>The server uses its private key to decrypt the symetric key</li>
</ul>
<li>RSA critical weekness</li>
Expand All @@ -831,7 +831,7 @@ <h1>Key Exchange</h1>
</ul>
<li>Diffie-Hellman key exhange</li>
<ul>
<li>Client and server can negoriate shared secret without its explicit communication</li>
<li>Client and server can negotiate shared secret without its explicit communication</li>
<ul>
<li>Attacker cannot get the key</li>
</ul>
Expand Down