PQ-Sign icon
PQ-Sign icon

PQ-Sign

Post-quantum signing API built on ML-DSA-65 (NIST FIPS 204) — sign tokens, issue certificates, and verify signatures without managing cryptographic infrastructure.

PQ-Sign screenshot 1

Cost / License

  • Freemium (Pay once)
  • Proprietary

Platforms

  • Online
  • Software as a Service (SaaS)
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PQ-Sign information

  • Developed by

    AR flagFIPSign

  • Licensing

    Proprietary and Freemium product.

  • Pricing

    One time purchase (perpetual license) ranging between $9 and $99 + free version with limited functionality.

  • Alternatives

    5 alternatives listed

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  • Supported Languages

    • English
PQ-Sign was added to AlternativeTo by NoxPay on and this page was last updated .
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What is PQ-Sign?

PQ-Sign is a post-quantum signing API built on ML-DSA-65 (NIST FIPS 204), part of the FIPSign suite. Sign tokens, issue certificates, and verify signatures without managing cryptographic infrastructure. Works for users, orders, documents, IoT devices, and AI agents. Includes a Private CA for issuing post-quantum certificates in PQCert (JSON) or X.509 (PEM) format. Certificates are verifiable offline. Revocation is instant. Free tier: 10,000 tokens/month, no credit card required. JS SDK, Python SDK, REST API, and MCP server for Claude included.