🔐 LISP-7: Linguistic Irreversible Scrambling Protocol

Destructive Semantic Encoding — A New Paradigm for Information Security

What if security relied not on ever-more-complex mathematical locks, but on destroying the message itself in semantic noise that can't be reconstructed?

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📋 Quick Facts

• Novel Paradigm: Destructive Semantic Encoding (DSE)
• 7 Progressive Levels: Vowel removal → Alphabet mutation
• Level-7 Innovation: Unique random alphabet key per compression
• Complexity: ~10^60 states (22 words), 10^35 years brute-force @ exascale
• Information Loss: 79.4% per word (true destruction, non-reversible)
• Validation: 40K+ French phrases tested

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🎯 Core Idea

Unlike RSA/AES (reversible), LISP-7 intentionally destroys information:

Plain:     "La technologie moderne"
L7 #1:     "qpm nmx mme dmp vpm J"  (key: abcd...xyz)
L7 #2:     "tua vam aaj wau gua B"  (key: wxyz...abc)
L7 #3:     "nsl mlw llt cls dsl Z"  (key: qrst...mno)

Same plaintext → completely different outputs every time

Without dictionary + alphabet key: Impossible to reconstruct.

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📚 Paper & Citation

Zenodo: https://doi.org/10.5281/zenodo.17638778

@misc{charlet_2025_lisp7,
  author       = {Charlet, Théo},
  title        = {LISP-7: Linguistic Irreversible Scrambling Protocol
                  — Destructive Semantic Encoding (DSE)},
  year         = 2025,
  doi          = {10.5281/zenodo.17638778},
  url          = {https://doi.org/10.5281/zenodo.17638778}
}

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🔧 7 Levels

Level	Operation	Security
1️⃣	Vowel removal	Low
2️⃣	Extended removal	Low
3️⃣	Triadic extraction	Medium
4️⃣	Chaos markers	High
5️⃣	Letter permutation	Very High
6️⃣	Word-order scrambling	Extreme
7️⃣	Alphabet mutation	Maximum

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🛡️ Security Model

Two-Key Lock:

✅ Correct compressed + Correct key → Decompression works
❌ Correct compressed + Wrong key  → FAIL
❌ Wrong compressed + Correct key  → FAIL
❌ No dictionary                   → Impossible

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📊 Complexity

State Space (Real Case: 22-word phrase)

• Level 7: ~7.67 × 10^60 configurations

Brute-Force @ Exascale (10^18 ops/sec)

• Level 7: 2.43 × 10^35 years (10^25 × age of universe)

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💡 Use Cases

• 🗃️ Archival security with semantic destruction
• 🔒 Privacy through irreversibility (not encryption)
• 🛡️ Multi-layer defense (DSE + AES-256)
• 📄 AI-resistant obfuscation

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🚫 Limitations

• Dictionary loss = irreversible
• Domain-specific effectiveness
• Metadata leakage (word lengths)
• Short words (< 3 chars) need handling

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📖 How It Works

INPUT: "La technologie moderne revolutionne notre societe"

Level 3:  Extract 1st + mid + last per word
Level 5:  Randomize letter order per word
Level 6:  Scramble word positions
Level 7:  Apply unique alphabet substitution (K_α)

OUTPUT:   "sgd adr ddy idg lgd H" (key: jpkmduqvanchylifbsrgowextz)

Decompression: Dictionary lookup + key reversal = 100% accurate

🎯 Quick Demo

Visit the web interface and try the example already in the database:

• Compressed text
• Level 7 alphabet key
• Decompress it to see the original message

This demonstrates the two-key lock: without BOTH the compressed text AND the alphabet key, reconstruction is impossible.

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⚡ Philosophy

The future of security: ever-more complex mathematical locks… or making the message disappear into semantic noise that can't be reconstructed?

LISP-7 answers: Destroy, don't hide. 🔐

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Author: Théo Charlet (RDTvlokip) License: CC BY-SA 4.0