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Cosmian Data Protection Suite
What Cosmian Data Protection Suite is
Cosmian Data Protection Suite provides cryptographic tools for protecting data in use and in public clouds. Cosmian KMS centrally manages encryption and decryption, keys and certificates, with storage, generation, rotation, distribution and usage policies for key lifecycles. The KMS is fully open source and includes FIPS 140-3 validated libraries, Covercrypt post-quantum encryption with access policies, and Findex searchable encryption. Cosmian also offers verifiable confidential virtual machines and confidential AI runners for cloud environments. Cosmian AI supports confidential GenAI translation and summarization without coding through Word and Chrome integrations. Findex performs encrypted exact, prefix and suffix searches and supplies Rust, JavaScript, Python, Java and Flutter wrappers. Products are available through AWS, Azure and Google Cloud marketplaces. KMS integrates with Google Workspace Client Side Encryption and Microsoft 365 Double Key Encryption, supports KMIP versions 1.0–1.4 and 2.0–2.1, and works with listed HSMs. The product page states that up to 5 million messages can be processed in under five seconds. A free demo server is available for testing, but it resets weekly, needs no authentication and has no graphical interface. Pricing is per CPU; no amount is listed.
Who it suits
It suits organizations protecting cloud data, encryption keys, confidential workloads or encrypted search across hybrid and multi-cloud deployments. Developers can use the listed language wrappers and integrations.
What it does well
- Open-source centralized key management
- Automated key storage, rotation and policies
- Confidential virtual machines and AI runners
- Encrypted exact, prefix and suffix search
- AWS, Azure and Google Cloud availability
What to know first
- No free plan
- Demo server resets its database weekly
- Demo server has no graphical interface
Limits
The free KMS demo server resets its database weekly and has no graphical interface. The paid KMS plan is priced per CPU; all connectors are included and any number of servers are allowed.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| KMS demo server | database resets weekly · no authentication · no graphical interface · REST API and CLI access | Free |
| Cosmian KMS | per-CPU pricing · no hidden costs · all connectors included · any number of servers | On request |
As cosmian.com lists them, read 14 Oct 2026. The maker's own page has the final word.
Getting started
- Visit https://cosmian.com/ to explore the suite.
- Try the free KMS demo server; it requires no authentication and has no graphical interface.
- Request a product demo or contact an expert.
- Choose a paid KMS plan priced per CPU, with connectors included and any number of servers.
- Access Cosmian products through AWS, Azure, or Google Cloud marketplaces.
Verdict
Cosmian combines key management, confidential computing, confidential AI and encrypted search in a multi-platform suite. Its open-source KMS, cloud marketplaces and standards support provide several deployment paths, while the free demo has notable testing limits.
Questions
Is Cosmian Data Protection Suite free?
The suite is paid, and a free trial is available. A KMS demo server is free to test.
What does the KMS plan cost?
The plan is priced per CPU, but no price amount is given. It includes all connectors and allows any number of servers.
Is Cosmian KMS open source?
Yes. Cosmian KMS is fully open source.
Which platforms and deployment options are supported?
Listed platforms are API, extension, Linux, macOS, self-hosted, web, and Windows. Deployment options are hybrid, with multi-cloud coverage.
Which integrations does KMS support?
KMS integrates with Google Workspace Client Side Encryption and Microsoft 365 Double Key Encryption. Cosmian products are also offered through AWS, Azure, and Google Cloud marketplaces.
What are the free demo's limits?
The KMS demo server resets its database weekly, requires no authentication, and has no graphical interface.
Facts from Cosmian Data Protection Suite's own pages
- API
- The KMS exposes a KMIP-compatible API and the documentation includes API endpoints, JSON TTLV, and operation references. · docs.cosmian.com, 14 Oct 2026
- CLI and GUI
- KMS provides a command-line client with integrated help plus a graphical interface supporting client certificates and OIDC tokens. · docs.cosmian.com, 14 Oct 2026
- Cloud marketplaces
- Cosmian products are offered through AWS, Azure, and Google Cloud marketplaces. · cosmian.com, 30 Sept 2026
- Company founded
- LinkedIn lists Cosmian as founded in 2018. · linkedin.com, 14 Oct 2026
- Company headquarters
- LinkedIn lists headquarters at 55 Rue La Boétie in Paris, France. · linkedin.com, 14 Oct 2026
- Company size
- LinkedIn lists Cosmian as a privately held company with 11–50 employees. · linkedin.com, 14 Oct 2026
- Confidential AI
- Cosmian AI supports confidential text translation and summarization inside Cosmian VM and offers Word and Chrome plugin integrations. · cosmian.com, 14 Oct 2026
- Confidential computing
- Cosmian offers verifiable confidential virtual machines and confidential AI runners that keep code and data protected in cloud environments. · cosmian.com, 30 Sept 2026
- Confidential VM
- Cosmian VM isolates workloads in hardware-backed trusted execution environments with memory encryption, disk encryption, and host isolation. · eviden.com, 14 Oct 2026
- Covercrypt
- Covercrypt is presented as a client-side encryption library with post-quantum resistance and encrypted access policies. · cosmian.com, 14 Oct 2026
- Cryptography
- KMS embeds FIPS 140-3 validated libraries, Covercrypt post-quantum encryption with access policies, and Findex searchable encryption. · cosmian.com, 30 Sept 2026
- Database integrations
- KMS documentation lists Oracle TDE, MongoDB, MySQL Enterprise, Microsoft SQL Server External EKM, and PostgreSQL integrations. · docs.cosmian.com, 14 Oct 2026
- Documentation depth
- The technical documentation is organized by security use case and product and includes installation, configuration, integrations, API, algorithms, audits, compliance, and KMIP operation references. · docs.cosmian.com, 14 Oct 2026
- Encrypted search
- Cosmian Findex provides encrypted exact, prefix, and suffix searches and has Rust, JavaScript, Python, Java, and Flutter wrappers. · cosmian.com, 30 Sept 2026
- Findex
- Cosmian Findex provides probabilistically encrypted exact, prefix, and suffix search over encrypted indexes. · cosmian.com, 14 Oct 2026
- Findex performance
- The Findex page reports approximately eight-microsecond search latency and twelve-microsecond insert latency. · cosmian.com, 14 Oct 2026
- Findex SDKs
- Findex is offered as a Rust library with JavaScript, Python, Java, and Flutter wrappers. · cosmian.com, 14 Oct 2026
- Free test limits
- The KMS demo server is free to test, resets its database weekly, requires no authentication, and has no graphical interface. · cosmian.com, 30 Sept 2026
- Funding
- Elaia reports a €1.4 million seed round for Cosmian in March 2019, led by Elaia with Acequia Capital, Fiblac, and business angels participating. · elaia.com, 14 Oct 2026
- HSM integrations
- Supported HSM families include Trustway Proteccio, Crypt2Pay, Utimaco, Nitrokey HSM 2, and SmartCard HSMs. · docs.cosmian.com, 14 Oct 2026
- HSM support
- KMS supports HSMs including Trustway Proteccio, Crypt2Pay, Utimaco, Nitrokey HSM 2, and Smartcard HSMs. · docs.cosmian.com, 30 Sept 2026
- Key lifecycle
- KMS supports key storage, generation, rotation, distribution, and usage policies. · marketplace.microsoft.com, 14 Oct 2026
- KMS
- Cosmian KMS centrally manages encryption and decryption operations, keys, and certificates, including lifecycle controls and PKI integration. · cosmian.com, 14 Oct 2026
- KMS architecture
- The KMS is a Rust server that combines key lifecycle management, an encryption service, and public-key infrastructure. · docs.cosmian.com, 14 Oct 2026
Where Cosmian Data Protection Suite stands on Freedom251
- Cloud Encryption Software#6 of 23