dnacrypt-lang 1.0.0

A domain-specific programming language for DNA-based cryptography

DNACrypt

A Domain-Specific Programming Language for DNA-Based Cryptography

Overview

DNACrypt is a novel programming language that seamlessly integrates cryptography and DNA sequence manipulation. It enables encryption, DNA encoding, biological steganography, and digital signatures in a clean, imperative syntax.

let message = "Secret data" let key = generate(AES256) let encrypted = AES256(message, key: key, mode: GCM) let dna = DNA.encode(encrypted, mapping: BINARY_2BIT) print(dna) // DNA(ATGCCGTA...)

Features

Cryptography

Symmetric Encryption: AES-128, AES-256 (GCM, CBC modes) Asymmetric Keys: RSA-2048/4096, ECDSA P-256/384/521 Hashing: SHA-256, SHA3-256, SHA3-512, BLAKE2b Key Derivation: PBKDF2 with configurable iterations Digital Signatures: ECDSA, RSA signatures Secure Random: Cryptographically secure random generation

DNA Operations Encoding: Binary to DNA conversion (multiple schemes) Decoding: DNA to binary conversion Transformations: Complement, reverse, reverse complement Analysis: GC content, sequence validation, motif finding Biological: Transcription (DNA→RNA), Translation (DNA→Protein) ORF Finding: Locate open reading frames Language Features

Type System: Static type checking with annotations Control Flow: If-else statements, loops (coming) Functions: Built-in functions with named parameters Clean Syntax: Imperative, easy to learn Error Handling: Try-catch blocks (coming)

Quick Start

Installation

Install from PyPI (when published)

pip install dnacrypt-lang

Or install from source

git clone https://github.com/Harshith2412/dnacrypt.git cd dnacrypt pip install -e .

Hello World

Create hello.dnac:

let greeting = "Hello, DNACrypt!" print(greeting)

Run it:

dnacrypt run hello.dnac

First Encryption

Create encrypt.dnac:

let secret = "My secret message" let key = generate(AES256) let encrypted = AES256(secret, key: key, mode: GCM)

print("Original:") print(secret)

print("Encrypted:") print(encrypted)

let decrypted = decrypt(encrypted, key: key) print("Decrypted:") print(decrypted)

Run:

dnacrypt run encrypt.dnac

Documentation

Language Guide - Complete tutorial with examples API Reference - Function and method documentation Setup Guide - Installation and configuration

Examples

DNA Encoding

let message = "Encode this" let key = generate(AES256) let encrypted = AES256(message, key: key, mode: GCM) let dna = DNA.encode(encrypted, mapping: BINARY_2BIT)

print("DNA Sequence:") print(dna)

let gc = DNA.gc_content(dna) print("GC Content:") print(gc)

Digital Signatures

let document = "I agree to the terms" let keys = generate_pair(ECDSA_P256)

let signature = SIGN(document, key: keys.private, algorithm: ECDSA)

let valid = VERIFY(document, signature: signature, key: keys.public) if valid { print("✓ Signature verified") }

Complete Pipeline

// Encrypt → Encode → Sign → Verify let message = "Secret mission" let password = "secure_password"

let salt = random_bytes(16) let key = derive_key( password: password, salt: salt, algorithm: PBKDF2, iterations: 100000 )

let encrypted = AES256(message, key: key, mode: GCM) let dna = DNA.encode(encrypted, mapping: BINARY_2BIT)

let signing_keys = generate_pair(ECDSA_P256) let signature = SIGN(dna, key: signing_keys.private, algorithm: ECDSA)

let verified = VERIFY(dna, signature: signature, key: signing_keys.public) print(verified) // true

Use Cases

1. Steganography

Hide encrypted data in synthetic DNA sequences that appear as legitimate genomic data.

2. DNA-Based Intrusion Detection

Apply biological immune system principles to cybersecurity using DNA-encoded patterns.

3. Secure Data Storage

Store encrypted information as DNA sequences in biological databases.

4. Research & Education

Teach cryptography and bioinformatics concepts in an integrated manner.

5. Biological Computing

Explore novel computing paradigms using DNA as a storage medium.

Architecture

┌─────────────────────────────────────────┐ │ DNACrypt Source Code (.dnac) │ └────────────────┬────────────────────────┘ ↓ ┌─────────────────────────────────────────┐ │ Lexer (Tokenization) │ │ • 60+ token types │ │ • DNA sequence detection │ └────────────────┬────────────────────────┘ ↓ ┌─────────────────────────────────────────┐ │ Parser (AST Generation) │ │ • 25+ AST node types │ │ • Operator precedence │ └────────────────┬────────────────────────┘ ↓ ┌─────────────────────────────────────────┐ │ Semantic Analyzer (Type Checking) │ │ • Type validation │ │ • Scope checking │ └────────────────┬────────────────────────┘ ↓ ┌─────────────────────────────────────────┐ │ Interpreter (Execution) │ │ • Runtime environment │ │ • Standard library │ └─────────────────────────────────────────┘

Language Statistics

Lines of Code: ~5,000+ Modules: 7 (4 core + 3 stdlib) Built-in Functions: 30+ Data Types: 15+ Tests: 18/18 passing Test Coverage: 100% Command Line Usage

Run a program

dnacrypt run program.dnac

Interactive REPL

dnacrypt repl

Execute code directly

dnacrypt -c "let x = 10; print(x)"

Show version

dnacrypt version

Get help

dnacrypt help

Python API

import dnacrypt

Run DNACrypt code

dnacrypt.run(''' let message = "Hello!" print(message) ''')

Run from file

dnacrypt.run_file('program.dnac')

Access compiler components

from dnacrypt import DNACryptLexer, DNACryptParser, DNACryptInterpreter

lexer = DNACryptLexer(code) tokens = lexer.tokenize()

parser = DNACryptParser(tokens) ast = parser.parse()

interpreter = DNACryptInterpreter() interpreter.interpret(ast)

Testing

Run basic tests (15 tests)

python3 tests/test_dnacrypt.py

Run system tests (3 comprehensive tests)

python3 tests/complete_system_test.py

All tests should pass: 18/18 ✓

Learning Resources

Tutorials

Language Guide - Complete tutorial API Reference - Function documentation Examples - Sample programs Example Programs

examples/hello.dnac - Hello world examples/encryption.dnac - Basic encryption examples/dna_analysis.dnac - DNA operations examples/secure_comm.dnac - Complete pipeline examples/steganography.dnac - Hide data in DNA Research Applications DNACrypt was developed for research in:

DNA-Based Intrusion Detection Systems - Apply biological immune principles to cybersecurity Biological Steganography - Hide data in synthetic DNA sequences Adversarial Machine Learning - In biological computing contexts Novel Cryptographic Protocols - DNA-based primitives Bioinformatics Education - Integrated crypto + bio teaching Publications

If you use DNACrypt in research, please cite:

@software{dnacrypt2025, author = {Harshith}, title = {DNACrypt: A Domain-Specific Language for DNA-Based Cryptography}, year = {2025}, institution = {Northeastern University}, url = {https://github.com/yourusername/dnacrypt} }

Contributing

Contributions are welcome! Areas for contribution:

Additional encryption algorithms (ChaCha20, etc.) More DNA encoding schemes Biological realism improvements Loop execution implementation User-defined functions File I/O operations Performance optimizations Documentation improvements Example programs Bug fixes Development Setup

Clone repository

git clone https://github.com/Harshith2412/dnacrypt.git cd dnacrypt

Install in development mode

pip install -e .

Run tests

python3 tests/test_dnacrypt.py

Make changes and test

dnacrypt run examples/test.dnac

Roadmap

Version 1.0 (Current)

Complete lexer, parser, interpreter Cryptographic operations DNA encoding/decoding Type checking CLI tool Comprehensive tests Version 1.1 (Planned)

[ ] User-defined functions execution [ ] While/For loop execution [ ] Try-catch execution [ ] File I/O operations [ ] Array/Dictionary operations [ ] REPL improvements Version 2.0 (Future)

[ ] Compilation to bytecode [ ] Performance optimizations [ ] Package manager [ ] VS Code extension [ ] Web-based playground [ ] Debugger [ ] Standard library expansion

License

MIT License - See LICENSE file for details.

Author

Harshith Madhavaram MS in Cybersecurity, Northeastern University Research Focus: DNA-based Intrusion Detection Systems, Adversarial ML, Cybersecurity

Acknowledgments

Python cryptography library for crypto primitives Standard bioinformatics algorithms Modern compiler design principles Research in biological computing

Support

Documentation: See LANGUAGE_GUIDE.md and API_REFERENCE.md Examples: Check examples/ folder Tests: See tests/ for usage examples

Project Status

Version: 1.0.0 Status: Beta (Production Ready) Tests: 18/18 passing (100%) Stability: Stable Maintained: Yes

DNACrypt - Where Cryptography Meets Biology

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