ECC-Messaging-Scheme-Package

A system that encrypts and decrypts data packets with the elliptic curve cryptography (ECC) for others to utilize and download.

Where to download:

typescript/javascript

https://www.npmjs.com/package/ecc-messaging-scheme-package

Python

https://pypi.org/project/ecc-messaging-scheme-package/

Classes

We have one main class, ECCM class, which combines our ECC class and our Encrypt/Decrypt, and curve initialization(initializePublicEnv) functions.

The ECC Class:

• Responsible for generating/loading private key
• Get current users public key from cookies or create a new one and save
• Gets shared key using diffie hellman when given another users public key
• Clear cookies containing private key for current instance.

Encrypt/Decrypt:

• Given a key and text it encrypts/decrypts text using AES

initializePublicEnv function:

• Inizalites a point and an ecc curve: secp256k1

Examples:

#Key exchange
C = initialize_public_env()
a_ecc_instance = ECC_Instance(C,'a')
a_ecc_instance.get_public_key()

b_ecc_instance = ECC_Instance(C,'b')
b_ecc_instance.get_public_key()

a_ecc_instance.generate_shared_key(b_ecc_instance.get_public_key())
b_ecc_instance.generate_shared_key(a_ecc_instance.get_public_key())

assert(a_ecc_instance.get_shared_key() == b_ecc_instance.get_shared_key())
#Share messages
key_b = a_ecc_instance.get_shared_key().x.to_bytes(24, byteorder='big')
plaintext = "test 12312 "
ciphertext,nonce = encrypt(key_b,plaintext)

plaintext_out = decrypt(key_b,ciphertext,nonce)

assert(plaintext==plaintext_out)

Disclaimer

Use at Your Own Risk.