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  <meta name="description" content="SPAR — Generating precise format specifications for network protocols through adversarial LLM interactions.">
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    <span class="hero-label">LLM-Driven Protocol Specification Generation</span>
    <h1 class="hero-title">
      <span class="hero-title-line gradient-text">SPAR</span>
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      Automatically generating precise, verified format specifications for network
      protocols from RFC documents through adversarial LLM interactions.
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        <div class="stat-value c1">30+</div>
        <div class="stat-label">Zero-Day Bugs Found</div>
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        <div class="stat-value c2">8+</div>
        <div class="stat-label">Protocols Covered</div>
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        <div class="stat-value c3">Security'26</div>
        <div class="stat-label">Accepted</div>
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      Writing precise protocol format specifications by hand is tedious and error-prone.
      <strong>SPAR</strong> leverages LLMs with adversarial refinement to generate verified
      specifications automatically from RFC documents.
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        <h4>LLM-Driven Generation</h4>
        <p>Automatically produces precise packet format specifications from natural-language RFC documents.</p>
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        <h4>Adversarial Refinement Loop</h4>
        <p>Two heterogeneous LLM tasks rarely make the same mistake — an adversarial loop exposes their inconsistencies and corrects errors until no changes remain.</p>
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        <div class="feature-icon">✅</div>
        <h4>Formally Verified Output</h4>
        <p>Built on EverParse and Z3 — every generated specification passes formal syntax verification before acceptance.</p>
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        <h4>Multi-Protocol</h4>
        <p>Demonstrated across 8 protocols: BGPv4, NTP, IGMP, BFD, BABEL, SCTP, DNS, and HTTP/2.</p>
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        <h4>End-to-End Automation</h4>
        <p>From RFC document parsing to verified specification output, the entire pipeline runs automatically with minimal human intervention.</p>
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