c7d

Name	c7d JSON
Version	0.1.0 JSON
	download
home_page	None
Summary	Tiny Cisco Type 7 (c7) encoder/decoder with a CLI.
upload_time	2025-10-21 11:32:47
maintainer	None
docs_url	None
author	Emil Bisgaard Commerou
requires_python	>=3.8
license	MIT
keywords	cisco type7 password decoder encoder security networking
VCS
bugtrack_url
requirements	No requirements were recorded.
Travis-CI	No Travis.
coveralls test coverage	No coveralls.

            
# c7d

> Tiny Cisco Type 7 (c7) encoder/decoder with a CLI.

⚠️ **Security warning:** Cisco *Type 7* is a simple XOR **obfuscation**, *not* cryptography.Do not rely on it to protect secrets.

## Installation

```bash
pip install c7d
```

## Usage

### CLI

```bash
# Decrypt a Type 7 string
c7d decrypt 060506324F41
# => cisco

# Encrypt plaintext (seed defaults to 00)
c7d encrypt cisco --seed 6
# => 060506324F41
```

#### Run without installation

```bash
uvx c7d --help
```

### Library

```python
from c7d import encrypt, decrypt

cipher = encrypt("cisco", seed=6)  # '060506324F41'
plain  = decrypt(cipher)            # 'cisco'
```

## API

- `c7d.encrypt(plain: str, seed: int = 0) -> str`
- `c7d.decrypt(x: str) -> str`

## Rationale

This implements the well-known Cisco Type 7 algorithm using the 53-character key string
`dsfd;kfoA,.iyewrkldJKDHSUBsgvca69834ncxv9873254k;fg87`. The algorithm XORs each
plaintext byte with a position-dependent character from this key, starting at an index
based on a two-digit decimal seed (00–99). The output is the seed followed by uppercase
hex bytes.

## License

MIT

            

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