Add WIP. Likely going nowhere.

I've thrashed around a bit, I think I'll move to rust.

gongor/aegis.py

@@ -25,6 +25,7 @@ def box():
 	with open(args.message, "rb") as f:
 		data = f.read()
 
+	shared_ecc_key, ciphered_public_key = _generate_encryption_key(certificate.public_key())
 	aad = b"authenticated but unencrypted data"
 	key = aead.ChaCha20Poly1305.generate_key()
 	with open("encryption.key", "wb") as f:
@@ -41,6 +42,15 @@ def box():
 	print(f"Wrote encrypted message to '{args.output}'")
 
 
+def ecc_calc_encryption_keys(pubKey):
+    ciphertextPrivKey = secrets.randbelow(curve.field.n)
+    ciphertextPubKey = ciphertextPrivKey * curve.g
+    sharedECCKey = pubKey * ciphertextPrivKey
+    return (sharedECCKey, ciphertextPubKey)
+
+def ecc_calc_decryption_key(privKey, ciphertextPubKey):
+    sharedECCKey = ciphertextPubKey * privKey
+    return sharedECCKey
 
 def generate():
 	print("Please name this aegis. You can call it anything. Frequently people use their legal name.")

gongor/cipher.py

@@ -0,0 +1,27 @@
+import argparse
+from pathlib import Path
+
+from cryptography import x509
+from cryptography.hazmat.primitives import serialization
+
+def box_message():
+	parser = argparse.ArgumentParser()
+	parser.add_argument("recipient_certificate", type=Path, help="Path to the certificate of the recipient")
+	parser.add_argument("sender_key", type=Path, help="Path to the private key of the sender")
+	parser.add_argument("--sender-key-password", type="str", default=None, help="The password to the sender private key")
+	parser.add_argument("message", type=Path, help="Path to the message to box")
+	args = parser.parse_args()
+
+	recipient_cert = _load_certificate(args.recipient_certificate)
+	sender_key = _load_key(args.sender_key)
+
+
+
+
+def _load_certificate(path: Path) -> x509.Certificate:
+	with open(path, "rb") as f:
+		return x509.load_pem_x509_certificate(f.read())
+
+def _load_key(path: Path, password: str) -> EllipticCurvePrivateKey:
+	with open(path, "rb") as f:
+		return serialization.load_pem_private_key(f.read(), password)