from cryptography.fernet import Fernet
def encrypt_message(public_key, message):
# Get the public key in bytes
public_key_bytes = bytes.fromhex(public_key)
# Generate a symmetric key
symmetric_key = Fernet.generate_key()
# Encrypt the message using the symmetric key
f = Fernet(symmetric_key)
encrypted_message = f.encrypt(message.encode())
# Encrypt the symmetric key using the public key
rsa_key = RSA.import_key(public_key_bytes)
cipher_rsa = PKCS1_OAEP.new(rsa_key)
encrypted_key = cipher_rsa.encrypt(symmetric_key)
return encrypted_key, encrypted_message
import ecdsa
# Generate a private key
private_key = ecdsa.SigningKey.generate(curve=ecdsa.SECP256k1)
# Get the public key
public_key = private_key.get_verifying_key()
# Encode the keys to hexadecimal format
private_key_hex = private_key.to_string().hex()
public_key_hex = public_key.to_string().hex()
print(f'Private key: {private_key_hex}')
print(f'Public key: {public_key_hex}')
from cryptography.fernet import Fernet
def encrypt_message(public_key, message):
# Get the public key in bytes
public_key_bytes = bytes.fromhex(public_key)
# Generate a symmetric key
symmetric_key = Fernet.generate_key()
# Encrypt the message using the symmetric key
f = Fernet(symmetric_key)
encrypted_message = f.encrypt(message.encode())
# Encrypt the symmetric key using the public key
rsa_key = RSA.import_key(public_key_bytes)
cipher_rsa = PKCS1_OAEP.new(rsa_key)
encrypted_key = cipher_rsa.encrypt(symmetric_key)
return encrypted_key, encrypted_message
from cryptography.fernet import Fernet
def encrypt_message(public_key, message):
# Get the public key in bytes
public_key_bytes = bytes.fromhex(public_key)
# Generate a symmetric key
symmetric_key = Fernet.generate_key()
# Encrypt the message using the symmetric key
f = Fernet(symmetric_key)
encrypted_message = f.encrypt(message.encode())
# Encrypt the symmetric key using the public key
rsa_key = RSA.import_key(public_key_bytes)
cipher_rsa = PKCS1_OAEP.new(rsa_key)
encrypted_key = cipher_rsa.encrypt(symmetric_key)
return encrypted_key, encrypted_message