How do I use CipherHUBCloudMCP?

This server has a remotely hosted endpoint. Open its connector listing for connection details, authentication requirements, and setup instructions: * CipherHUB Cryptography Toolkit

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CipherHUBCloudMCP

by bowenerchen

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Remote

CipherHUB MCP Server

Production-grade cryptography toolkit exposing 55 MCP tools drawn from 57 cryptographic operations available through the REST API and Web UI. Built and operated by Yang X. CHEN — the engineering decisions behind this service are written up on the blog at cipherhub.cloud.

Overview

CipherHUB enables AI agents to perform cryptographic operations without implementing algorithms themselves. It covers:

Classical Algorithms: AES (CBC/GCM/CTR/XTS), ChaCha20-Poly1305, RSA, ECC (SECP256R1/384R1/521R1, X25519, Ed25519), SHA-2 family, SHAKE
Chinese National Standards (国密): SM2, SM3, SM4, ZUC-128, SM9 identity-based cryptography (GM/T 0044)
Post-Quantum Cryptography: ML-KEM (FIPS 203), ML-DSA (FIPS 204), X25519+ML-KEM-768 Hybrid KEX
Certificates & Structured Crypto Messages: X.509 parsing and verification, CMS SignedData and EnvelopedData (RFC 5652), COSE_Sign1 (RFC 9052), CBOR (RFC 8949), ASN.1/DER dissection
Interoperability, verified against three independent stacks: AWS KMS (70/70), Tencent Cloud KMS (39/39), OpenSSL 3.6 (148/154 — 6 skipped, 0 failed)

Related MCP server: @bitatlas/mcp-server

Quick Start

MCP Endpoint

https://tools.cipherhub.cloud/cipherhub/mcp

Protocol

Type: Streamable HTTP
Protocol revisions: 2025-11-25 (current); 2025-06-18, 2025-03-26, and 2024-11-05 are also accepted
Format: JSON-RPC 2.0
Stateless: No session, no handshake, no API key — every request is a standalone POST
Deployed version: 1.13.2

Example: Call a Tool

curl -X POST https://tools.cipherhub.cloud/cipherhub/mcp \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  -d '{
    "jsonrpc": "2.0",
    "method": "tools/call",
    "params": {
      "name": "hash_sum",
      "arguments": {
        "plain_in_hex": "48656c6c6f",
        "required_hash_modes": ["Sha384"]
      }
    },
    "id": 1
  }'

The tool payload is a JSON string inside result.content[0].text:

{
  "code": "success",
  "Results": {
    "Sha384": {
      "hash_sum_in_hex": "3519fe5ad2c596efe3e276a6f351b8fc0b03db861782490d45f7598ebd0ab5fd5520ed102f38c4a5ec834e98668035fc",
      "hash_length": 48
    }
  }
}

Note the conventions: binary input and output travel as hex strings (*_in_hex fields), and algorithm names use TitleCase enum values (Sha384, Sm3) — SHA-384 is rejected by the schema.

More runnable examples: examples/curl_examples.sh and examples/quickstart.py (Python stdlib only).

Discovery

Machine-readable metadata for agents, crawlers, and registries:

Resource	Location
MCP Server Card	`https://tools.cipherhub.cloud/cipherhub/mcp/server-card` (`application/mcp-server-card+json`)
AI Catalog	`https://cipherhub.cloud/.well-known/ai-catalog.json`
Agent Skills index	`https://cipherhub.cloud/.well-known/agent-skills/index.json`
Capability description	`https://tools.cipherhub.cloud/llms.txt`
OpenAPI 3.1	`https://tools.cipherhub.cloud/.well-known/openapi.yaml`
Registry manifest	`server.json` — namespace `io.github.bowenerchen/cipherhub`

The Server Card publishes identity, version, transport, and supported protocol revisions. It does not enumerate tools, prompts, or resources; fetch those at runtime with tools/list, prompts/list, and resources/list.

Tools

Hash & MAC

Tool	Description
`hash_sum`	Batch digests: SHA-1/224/256/384/512, SM3, SHAKE128/256
`hmac_sum`	HMAC over the same hash family (SHAKE excluded)

Key Derivation

Tool	Description
`key_derivation`	HKDF (RFC 5869), SM3-KDF (GB/T 32918), PBKDF2-SM3 (RFC 8018)

Random & Utility

Tool	Description
`hello`	Connectivity check; echoes `client_msg` back
`generate_random_data`	CSPRNG bytes (1–128 per call)
`data_padding`	PKCS#7 pad / unpad

Symmetric Encryption

Tool	Description
`block_cipher`	AES-128/256-CBC, SM4-CBC
`stream_cipher`	AEAD: AES-256-GCM, ChaCha20-Poly1305, SM4-GCM
`ctr_cipher`	AES-256-CTR, SM4-CTR counter mode
`xts_cipher`	AES-XTS (IEEE 1619 / NIST SP 800-38E)
`zuc_cipher`	ZUC-128 stream cipher (3GPP, 4G/5G mobile communications)

RSA

Tool	Description
`generate_rsa`	Generate RSA key pair (2048/3072/4096 bits)
`rsa_encryption` / `rsa_decryption`	RSA public-key encryption, private-key decryption
`rsa_sign` / `rsa_verify`	RSA signatures

ECC

Tool	Description
`generate_ecc`	Generate ECC key pair (SECP256R1/384R1/521R1, X25519, Ed25519)
`ecc_key_exchange`	ECDH + HKDF key agreement
`ecc_key_sign` / `ecc_key_verify`	ECDSA (SECP*) and EdDSA (ED25519) signatures

SM2 — Chinese National Standard Curve

Tool	Description
`generate_sm2`	Generate SM2 (SM2P256V1) key pair
`sm2_encryption` / `sm2_decryption`	SM2 public-key encryption
`sm2_sign` / `sm2_verify`	SM2 signatures
`sm2_private_key_structure_parse`	ASN.1 view of an encrypted SM2 private key
`sm2_public_key_to_hex`	PEM public key → raw uncompressed point (04‖X‖Y)

SM9 — Identity-Based Cryptography (GM/T 0044)

Tool	Description
`generate_sm9`	Generate KGC master key pair (Sign or Enc)
`sm9_extract_key`	KGC issues a user private key for an identity
`sm9_encryption` / `sm9_decryption`	Encrypt to an identity, decrypt with user key
`sm9_sign` / `sm9_verify`	Identity-based signatures

Post-Quantum Cryptography

Tool	Description
`ml_kem_keygen`	ML-KEM key generation (FIPS 203)
`ml_kem_encap` / `ml_kem_decap`	ML-KEM encapsulation / decapsulation
`ml_dsa_keygen`	ML-DSA key generation (FIPS 204)
`ml_dsa_sign` / `ml_dsa_verify`	ML-DSA signatures
`ml_dsa_compute_mu`	Standalone 64-byte mu computation (FIPS 204 §6.2)
`hybrid_kex`	X25519 + ML-KEM-768 hybrid key exchange walkthrough

X.509 Certificates

Tool	Description
`cert_parse`	Parse PEM certificates (X.509 and GM SM2 dual paths)
`cert_verify`	Verify an end-entity certificate against its CA

Structured Data

Tool	Description
`cbor_encode` / `cbor_decode`	JSON ↔ CBOR (RFC 8949), decode gives a per-field tree
`asn1_parse`	TLV dissection of any ASN.1/BER bytes, with DER verdict (X.690)
`der_encode`	JSON node DSL → DER bytes (X.690)

COSE & CMS

Tool	Description
`cose_sign1_sign` / `cose_sign1_verify` / `cose_sign1_parse`	COSE_Sign1 build, verify, dissect (RFC 9052/9053)
`cms_signed_sign` / `cms_signed_verify`	CMS SignedData sign and verify (RFC 5652 §5)
`cms_enveloped_encrypt` / `cms_enveloped_decrypt` / `cms_enveloped_parse`	CMS EnvelopedData / authEnvelopedData (RFC 5652 §6, RFC 5083)

Prompts

Six ready-made agent workflows served via prompts/list:

Prompt	Purpose
`pqc_migration_assessment`	Assess post-quantum migration readiness
`algorithm_recommendation`	Algorithm choices by use case
`e2e_encryption_flow`	Full end-to-end encryption walkthrough
`sign_verify_workflow`	Generate key pair, sign, then verify
`verify_key_pair`	Check that a key pair matches (RSA, ECC, SM2)
`hybrid_kex_demo`	X25519 + ML-KEM-768 hybrid exchange demo

Resources

URI	Description
`cipherhub://algorithms`	Complete algorithm catalog
`cipherhub://tool-categories`	Tool categorization
`cipherhub://mcp-usage-guide`	Complete guide for AI agents using these MCP tools
`cipherhub://interop/aws-kms`	AWS KMS interoperability report (70/70 passed)
`cipherhub://interop/tencent-kms`	Tencent Cloud KMS interoperability report (39/39 passed)
`cipherhub://interop/openssl36`	OpenSSL 3.6 interoperability report (148/154 passed)
`cipherhub://benchmark-report`	Performance benchmarks for all operations
`cipherhub://channel-implementation`	SDK channel protocol reference implementation

Agent Skill

A ready-to-use Agent Skills package lives in skills/cipherhub-crypto/. It teaches any SKILL.md-compatible agent (Claude Code and others) when to reach for CipherHUB and how to call it — either by registering the MCP server or with plain HTTP.

Install with the skills CLI:

npx skills add https://github.com/bowenerchen/CipherHUB-MCP-Server/tree/main/skills/cipherhub-crypto -g

Claude Code plugin marketplace:

claude plugin marketplace add bowenerchen/CipherHUB-MCP-Server
claude plugin install cipherhub-crypto@cipherhub

Manual copy:

cp -r skills/cipherhub-crypto ~/.claude/skills/

The blog serves a byte-identical copy at https://cipherhub.cloud/.well-known/agent-skills/cipherhub-crypto/SKILL.md and registers it in the Agent Skills index with a SHA-256 digest. Whenever SKILL.md changes, replace the copy under the blog repository's static/.well-known/agent-skills/cipherhub-crypto/ and update the digest field in static/.well-known/agent-skills/index.json within the same edit, otherwise the published digest no longer matches the file.

Client Configuration

Claude Code

claude mcp add --scope user --transport http cipherhub https://tools.cipherhub.cloud/cipherhub/mcp

Claude Desktop

Add to your Claude Desktop config:

{
  "mcpServers": {
    "cipherhub": {
      "url": "https://tools.cipherhub.cloud/cipherhub/mcp"
    }
  }
}

Custom Client

Use any MCP-compatible client with the endpoint URL.

API Documentation

Server Card: https://tools.cipherhub.cloud/cipherhub/mcp/server-card
AI Catalog: https://cipherhub.cloud/.well-known/ai-catalog.json
Agent Skills index: https://cipherhub.cloud/.well-known/agent-skills/index.json
OpenAPI: https://tools.cipherhub.cloud/.well-known/openapi.yaml
llms.txt: https://tools.cipherhub.cloud/llms.txt
Registry manifest: server.json

Web Interface

Interactive web UI available at: https://tools.cipherhub.cloud

Author

Yang X. CHEN

Blog: https://cipherhub.cloud — the engineering story behind this toolkit: algorithm choices, GmSSL integration, interoperability testing, and post-quantum migration notes
GitHub: @bowenerchen

License

MIT License

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

Loading tool schema changelog…

This server cannot be deployed

Claude Code, inside the Godot 4 editorFlockbay puts an AI agent in the real Godot 4 editor: it writes GDScript, runs your game and fixes what breaks. Free, or bring your own Claude Code or Codex.flockbay.comAd

Maintenance

ActivityMaintained

ResponsivenessNo recent community issues

Resources

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CipherHUB MCP Server

Overview

Quick Start

MCP Endpoint

Protocol

Example: Call a Tool

Discovery

Tools

Hash & MAC

Key Derivation

Random & Utility

Symmetric Encryption

RSA

ECC

SM2 — Chinese National Standard Curve

SM9 — Identity-Based Cryptography (GM/T 0044)

Post-Quantum Cryptography

X.509 Certificates

Structured Data

COSE & CMS

Prompts

Resources

Agent Skill

Client Configuration

Claude Code

Claude Desktop

Custom Client

API Documentation

Web Interface

Author

License

Tool Schema Changelog

Maintenance

Resources

Related MCP Connectors

Related MCP Servers

Security Toolkit MCP Server

@bitatlas/mcp-server

mcp-hash

WebCrypt

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