abhedya 1.0.3

Sanskrit-Encoded Post-Quantum Cryptography SDK

Abhedya: Sanskrit-Encoded Post-Quantum Cryptography

Unmatched Speed. Unbreakable Security.

Abhedya is a high-performance Post-Quantum Cryptography (PQC) library that implements a Lattice-based (LWE) cryptosystem with a unique capability: Linguistic Steganography. It can encode ciphertexts into valid, prosodically correct Sanskrit verse.

Features

• Post-Quantum Security: Based on the Learning With Errors (LWE) problem ($N=768, Q=3329$).
• Sanskrit Steganography: "Metered Mode" produces ciphertexts that follow classical Anushtubh meter (Sloka).
• High Performance: Sub-microsecond encryption (<1ms) via optimized Rust core.
• Cross-Platform: Python bindings for the core Rust implementation.

Installation

pip install abhedya

Note: This package requires a compatible C runtime (provided in wheels for Linux/macOS/Windows).

Quick Start

from abhedya import Abhedya, EncryptionMode

# Initialize
crypto = Abhedya()

# 1. Generate Keys (Kyber-style LWE)
pk, sk = crypto.keygen()
print(f"Public Key Size: {len(pk)} bytes")

# 2. Encrypt (Standard Mode - High Speed)
message = b"Secret Message"
ciphertext = crypto.encrypt(pk, message, mode=EncryptionMode.STANDARD)
print(f"Ciphertext: {len(ciphertext)} bytes")

# 3. Decrypt
decrypted = crypto.decrypt(sk, ciphertext)
print(f"Decrypted: {decrypted.decode('utf-8')}")

Advanced Usage: Metered Mode (Steganography)

To generate ciphertext that mimics the statistical properties of Sanskrit verse (Poetry), use EncryptionMode.METERED.

# Encrypt with Metering (Slower, but steganographic)
ciphertext_verse = crypto.encrypt(pk, message, mode=EncryptionMode.METERED)

# The output binary is shaped to map to Sanskrit syllables
# adhering to Laghu/Guru (Light/Heavy) weight patterns.

API Reference

Abhedya(lib_path: str = None)

Initializes the library. Automatically finds the shared object if installed via pip.

keygen() -> (bytes, bytes)

Generates a new Keypair.

• Returns: (public_key, secret_key)

encrypt(pk: bytes, msg: bytes, mode: int) -> bytes

Encrypts a message.

• mode:
  • 0 (Standard): Raw LWE output.
  • 1 (Metered): Prosody-compliant output.

decrypt(sk: bytes, ct: bytes) -> bytes

Decrypts the ciphertext.

License

MIT License. See Repository for details.