[pqc_signature] 独立计算 ML-DSA 的 64 字节 mu 值（FIPS 204 Section 6.2）。 【用途】用于验证或调试 EXTERNAL_MU 模式的中间值，或与 AWS KMS EXTERNAL_MU 签名流程对接。 【计算公式】 - tr = SHAKE-256(raw_pk, 64) - M' = 0x00 || len(ctx) || ctx || message - mu = SHAKE-256(tr || M', 64) 【参数】 - public_key_spki_in_hex：公钥 hex（SPKI DER 或裸公钥均可），并校验 OID/...
Part of the CipherHUB Cryptography Toolkit server.
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AI agents call ml_dsa_compute_mu to retrieve information from CipherHUB Cryptography Toolkit without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though ml_dsa_compute_mu only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"ml_dsa_compute_mu": {}
}
}See the full CipherHUB Cryptography Toolkit policy for all 32 tools.
These attack patterns abuse exactly the kind of access ml_dsa_compute_mu gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
[pqc_signature] 独立计算 ML-DSA 的 64 字节 mu 值（FIPS 204 Section 6.2）。 【用途】用于验证或调试 EXTERNAL_MU 模式的中间值，或与 AWS KMS EXTERNAL_MU 签名流程对接。 【计算公式】 - tr = SHAKE-256(raw_pk, 64) - M' = 0x00 || len(ctx) || ctx || message - mu = SHAKE-256(tr || M', 64) 【参数】 - public_key_spki_in_hex：公钥 hex（SPKI DER 或裸公钥均可），并校验 OID/长度与 algorithm 一致 - message_in_hex：原始消息 hex（最大 2048 字节，空字符串表示空消息） - context_in_hex：可选上下文 hex（最大 255 字节） - algorithm：ML-DSA-44 / ML-DSA-65（默认）/ ML-DSA-87 【输出】tr_in_hex、mu_in_hex、raw_pk_in_hex、algorithm、message_bytes。. It is categorised as a Read tool in the CipherHUB Cryptography Toolkit MCP Server, which means it retrieves data without modifying state.
Register the CipherHUB Cryptography Toolkit MCP server in PolicyLayer and add a rule for ml_dsa_compute_mu: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches CipherHUB Cryptography Toolkit. Nothing to install.
ml_dsa_compute_mu is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the ml_dsa_compute_mu rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for ml_dsa_compute_mu. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
ml_dsa_compute_mu is provided by the CipherHUB Cryptography Toolkit MCP server (https://tools.cipherhub.cloud/cipherhub/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 32 CipherHUB Cryptography Toolkit tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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