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47 lines
1.5 KiB
Python
47 lines
1.5 KiB
Python
# Copyright 2016 Red Hat | Ansible
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# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
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# SPDX-License-Identifier: GPL-3.0-or-later
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# Note that this module util is **PRIVATE** to the collection. It can have breaking changes at any time.
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# Do not use this from other collections or standalone plugins/modules!
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from __future__ import annotations
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import base64
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import random
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from ansible.module_utils.common.text.converters import to_bytes, to_native, to_text
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def generate_insecure_key():
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"""Do NOT use this for cryptographic purposes!"""
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while True:
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# Generate a one-byte key. Right now the functions below do not use more
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# than one byte, so this is sufficient.
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key = bytes([random.randint(0, 255)])
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# Return anything that is not zero
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if key != b"\x00":
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return key
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def scramble(value, key):
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"""Do NOT use this for cryptographic purposes!"""
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if len(key) < 1:
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raise ValueError("Key must be at least one byte")
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value = to_bytes(value)
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k = key[0]
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value = bytes([k ^ b for b in value])
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return "=S=" + to_native(base64.b64encode(value))
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def unscramble(value, key):
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"""Do NOT use this for cryptographic purposes!"""
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if len(key) < 1:
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raise ValueError("Key must be at least one byte")
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if not value.startswith("=S="):
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raise ValueError("Value does not start with indicator")
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value = base64.b64decode(value[3:])
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k = key[0]
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value = bytes([k ^ b for b in value])
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return to_text(value)
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