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io.github.daedalus/mcp-cryptography

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MCP server exposing cryptography library functionality

Source code Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

PYPI package mcp-cryptography
Claude Code 
claude mcp add mcp-cryptography -- uvx mcp-cryptography==0.1.1
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "mcp-cryptography": {
            "command": "uvx",
            "args": [
                "mcp-cryptography==0.1.1"
            ]
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. mcp-cryptography
  2. Install
  3. Usage
  4. Available Tools
  5. Development

mcp-cryptography

MCP server exposing cryptography library functionality.

mcp-name: io.github.daedalus/mcp-cryptography

Install

pip install mcp-cryptography

Usage

from mcp_cryptography import mcp

# Run the MCP server
if __name__ == "__main__":
    mcp.run()

Available Tools

The server provides the following cryptographic tools:

Key Generation
  • generate_symmetric_key - Generate a Fernet symmetric key
  • generate_rsa_key - Generate an RSA key pair
  • generate_x25519_key - Generate an X25519 key pair
Symmetric Encryption
  • fernet_encrypt / fernet_decrypt - Fernet encryption
  • aes_encrypt / aes_decrypt - AES encryption (CBC/GCM modes)
Asymmetric Encryption
  • rsa_encrypt / rsa_decrypt - RSA OAEP encryption
  • rsa_sign / rsa_verify - RSA digital signatures
Hashing
  • hash_sha256 - SHA-256 hash
  • hash_sha512 - SHA-512 hash
  • hash_sha1 - SHA-1 hash
HMAC
  • hmac_sign - Generate HMAC
  • hmac_verify - Verify HMAC
Key Derivation
  • pbkdf2_derive - PBKDF2 key derivation
  • scrypt_derive - Scrypt key derivation
X.509 Certificates
  • generate_self_signed_cert - Generate self-signed certificate
  • parse_certificate - Parse X.509 certificate
Utilities
  • generate_random_bytes - Generate random bytes
  • generate_random_base64 - Generate random base64 bytes

Development

git clone https://github.com/daedalus/mcp-cryptography.git
cd mcp-cryptography
pip install -e ".[test]"

# run tests
pytest

# format
ruff format src/ tests/

# lint
ruff check src/ tests/

# type check
mcp_cryptography src/

Frequently asked questions

What is io.github.daedalus/mcp-cryptography?

MCP server exposing cryptography library functionality

How do I install io.github.daedalus/mcp-cryptography?

It runs on your machine. In Claude Code: claude mcp add mcp-cryptography -- uvx mcp-cryptography==0.1.1. For other clients, paste the JSON configuration from this page into their MCP settings.

Does io.github.daedalus/mcp-cryptography need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is io.github.daedalus/mcp-cryptography open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains io.github.daedalus/mcp-cryptography?

It is published by daedalus. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.