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// Skill profile

Crypt — Encryption & Decryption Tool

name: crypt

by bytesagain3 · published 2026-03-22

开发工具数据处理加密货币
Total installs
0
Stars
★ 0
Last updated
2026-03
// Install command
$ claw add gh:bytesagain3/bytesagain3-crypt
View on GitHub
// Full documentation

---

name: crypt

version: "1.0.0"

description: "Encrypt, decrypt, hash, and sign data using standard cryptographic algorithms. Use when you need data protection or integrity verification."

author: BytesAgain

homepage: https://bytesagain.com

source: https://github.com/bytesagain/ai-skills

tags: [cryptography, encryption, hashing, security, password, signing]

---

# Crypt — Encryption & Decryption Tool

Crypt is a command-line cryptography toolkit that provides encryption, decryption, hashing, digital signing, key generation, encoding/decoding, and password generation. It uses Python's built-in `hashlib`, `hmac`, and other standard library modules.

Operation history is stored in `~/.crypt/data.jsonl` (sensitive data like keys and plaintexts are NOT stored).

Prerequisites

  • Python 3.8+ with standard library
  • `bash` shell

    • Commands

    `encrypt`

    Encrypt text or file content using AES-like XOR cipher or other algorithms.

    **Environment Variables:**

  • `INPUT` (required) — Text to encrypt, or file path if `IS_FILE=true`
  • `KEY` (required) — Encryption key/passphrase
  • `ALGORITHM` — Algorithm: `aes-xor`, `caesar`, `vigenere`, `xor` (default: aes-xor)
  • `IS_FILE` — Set to `true` for file input (default: false)
  • `OUTPUT` — Output file path (default: stdout)

    • **Example:**

    INPUT="Hello World" KEY="mysecret" bash scripts/script.sh encrypt

    `decrypt`

    Decrypt previously encrypted data.

    **Environment Variables:**

  • `INPUT` (required) — Encrypted text or file path
  • `KEY` (required) — Decryption key/passphrase
  • `ALGORITHM` — Algorithm used for encryption (default: aes-xor)
  • `IS_FILE` — Set to `true` for file input (default: false)

    • `hash`

    Generate cryptographic hash of text or file.

    **Environment Variables:**

  • `INPUT` (required) — Text to hash, or file path if `IS_FILE=true`
  • `ALGORITHM` — Hash algorithm: `md5`, `sha1`, `sha256`, `sha512`, `sha3_256` (default: sha256)
  • `IS_FILE` — Set to `true` for file input (default: false)

    • **Example:**

    INPUT="password123" ALGORITHM=sha256 bash scripts/script.sh hash

    `sign`

    Create an HMAC signature for data integrity verification.

    **Environment Variables:**

  • `INPUT` (required) — Data to sign
  • `KEY` (required) — Signing key
  • `ALGORITHM` — Hash algorithm for HMAC (default: sha256)

    • `verify`

    Verify an HMAC signature against data.

    **Environment Variables:**

  • `INPUT` (required) — Original data
  • `KEY` (required) — Signing key
  • `SIGNATURE` (required) — Signature to verify
  • `ALGORITHM` — Hash algorithm (default: sha256)

    • `keygen`

    Generate random keys or key pairs.

    **Environment Variables:**

  • `LENGTH` — Key length in bytes (default: 32)
  • `FORMAT` — Output format: `hex`, `base64`, `raw` (default: hex)
  • `TYPE` — Key type: `symmetric`, `pair` (default: symmetric)

    • `encode`

    Encode data using Base64, Base32, or hex encoding.

    **Environment Variables:**

  • `INPUT` (required) — Data to encode
  • `ENCODING` — Encoding type: `base64`, `base32`, `hex`, `url` (default: base64)

    • `decode`

    Decode Base64, Base32, hex, or URL-encoded data.

    **Environment Variables:**

  • `INPUT` (required) — Data to decode
  • `ENCODING` — Encoding type: `base64`, `base32`, `hex`, `url` (default: base64)

    • `password`

    Generate secure random passwords.

    **Environment Variables:**

  • `LENGTH` — Password length (default: 16)
  • `COUNT` — Number of passwords to generate (default: 1)
  • `CHARSET` — Character set: `all`, `alpha`, `alnum`, `hex`, `digits` (default: all)
  • `EXCLUDE` — Characters to exclude

    • `config`

    View or update configuration settings.

    **Environment Variables:**

  • `KEY` — Configuration key
  • `VALUE` — Configuration value

    • `help`

    Display usage information and available commands.

    `version`

    Display the current version of the crypt tool.

    Data Storage

    Operation logs are stored in `~/.crypt/data.jsonl`. Each record contains:

  • `id` — Unique operation identifier
  • `timestamp` — ISO 8601 time
  • `operation` — Operation type (encrypt, hash, sign, etc.)
  • `algorithm` — Algorithm used
  • `input_length` — Length of input data (NOT the data itself)
  • `output_preview` — First 32 chars of output (for hashes/encoded data only)

    • Configuration

    Config stored in `~/.crypt/config.json`:

  • `default_hash` — Default hash algorithm (default: sha256)
  • `default_encoding` — Default encoding (default: base64)
  • `password_length` — Default password length (default: 16)
  • `log_operations` — Whether to log operations (default: true)

    • ---

    Powered by BytesAgain | bytesagain.com | hello@bytesagain.com

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