AI Newsletter Digest improvements: fixed QP soft line break decoding, URL extraction, and content cleaning

archive/inactive-skills/clawtoclaw/scripts/encrypt_payload.py

@@ -0,0 +1,81 @@
+#!/usr/bin/env python3
+"""Encrypt a JSON payload for C2C messaging."""
+
+from __future__ import annotations
+
+import argparse
+import base64
+import json
+import sys
+from pathlib import Path
+
+from nacl.public import Box, PrivateKey, PublicKey
+
+
+def parse_args() -> argparse.Namespace:
+    parser = argparse.ArgumentParser(description=__doc__)
+
+    sender = parser.add_mutually_exclusive_group(required=True)
+    sender.add_argument("--sender-private-key", help="Sender private key (base64)")
+    sender.add_argument("--sender-private-key-file", help="Path to sender private key file or key JSON")
+
+    recipient = parser.add_mutually_exclusive_group(required=True)
+    recipient.add_argument("--recipient-public-key", help="Recipient public key (base64)")
+    recipient.add_argument("--recipient-public-key-file", help="Path to recipient public key file or key JSON")
+
+    payload = parser.add_mutually_exclusive_group()
+    payload.add_argument("--payload-json", help="Inline JSON payload string")
+    payload.add_argument("--payload-file", help="Path to payload JSON file")
+
+    return parser.parse_args()
+
+
+def read_text(path: str) -> str:
+    return Path(path).expanduser().read_text(encoding="utf-8").strip()
+
+
+def coerce_key(text: str, key_name: str) -> str:
+    text = text.strip()
+    if text.startswith("{"):
+        return json.loads(text)[key_name]
+    return text
+
+
+def read_key(arg_value: str | None, file_value: str | None, key_name: str) -> str:
+    if arg_value:
+        return arg_value.strip()
+    if not file_value:
+        raise ValueError(f"Missing {key_name}")
+    return coerce_key(read_text(file_value), key_name)
+
+
+def read_payload(args: argparse.Namespace):
+    if args.payload_json:
+        return json.loads(args.payload_json)
+    if args.payload_file:
+        return json.loads(read_text(args.payload_file))
+
+    stdin = sys.stdin.read().strip()
+    if not stdin:
+        raise ValueError("Provide --payload-json, --payload-file, or JSON on stdin")
+    return json.loads(stdin)
+
+
+def main() -> None:
+    args = parse_args()
+
+    sender_private_b64 = read_key(args.sender_private_key, args.sender_private_key_file, "privateKey")
+    recipient_public_b64 = read_key(args.recipient_public_key, args.recipient_public_key_file, "publicKey")
+    payload = read_payload(args)
+
+    sender_private = PrivateKey(base64.b64decode(sender_private_b64))
+    recipient_public = PublicKey(base64.b64decode(recipient_public_b64))
+
+    box = Box(sender_private, recipient_public)
+    plaintext = json.dumps(payload, separators=(",", ":")).encode("utf-8")
+    encrypted = box.encrypt(plaintext)
+    print(base64.b64encode(bytes(encrypted)).decode("ascii"))
+
+
+if __name__ == "__main__":
+    main()