encrypt.py

import sys
from base64 import b64encode
from nacl import encoding, public

def encrypt(public_key: str, secret_value: str) -> str:
    """Encrypt a Unicode string using the public key."""
    public_key = public.PublicKey(public_key.encode("utf-8"), encoding.Base64Encoder())
    sealed_box = public.SealedBox(public_key)
    encrypted = sealed_box.encrypt(secret_value.encode("utf-8"))
    return b64encode(encrypted).decode("utf-8")

# Extract command-line arguments
if len(sys.argv) != 3:
    print("Usage: python script.py <public_key> <secret_file>")
    sys.exit(1)

public_key = sys.argv[1]
secret_file = sys.argv[2]

# Read the secret value from the file
try:
    with open(secret_file, "r") as file:
        secret_value = file.read().strip()
except FileNotFoundError:
    print(f"Error: File '{secret_file}' not found.")
    sys.exit(1)

# Encrypt the secret
encrypted_secret = encrypt(public_key, secret_value)
print(encrypted_secret)