Private Machines ENFORCER vs ProvenRun ProvenHSM: Side-by-Side Comparison (2026)

Private Machines ENFORCER: FIPS 140-2 Level 4 tamper-proof secure server for critical infrastructure. built by Private Machines Inc.. Core capabilities include NIST FIPS 140-2 Level 4 certified tamper-proof hardware, Secure computation environment protecting data and code at runtime, Access controls preventing insider and physical access to running computation..

ProvenRun ProvenHSM: Cloud & telecom HSM with formal OS verification, FIPS 140-3 L3, and PQC support. built by ProvenRun. Core capabilities include CC EAL5+ and FIPS 140-3 Level 3 certified security with tamper protection, Formally verified OS (ProvenCore, CC EAL7) as the underlying platform, Post-Quantum Cryptography support (ML-KEM, ML-DSA)..

Both serve the Key Management market but differ in approach, feature depth, and target audience.

Private Machines ENFORCER differentiates with NIST FIPS 140-2 Level 4 certified tamper-proof hardware, Secure computation environment protecting data and code at runtime, Access controls preventing insider and physical access to running computation. ProvenRun ProvenHSM differentiates with CC EAL5+ and FIPS 140-3 Level 3 certified security with tamper protection, Formally verified OS (ProvenCore, CC EAL7) as the underlying platform, Post-Quantum Cryptography support (ML-KEM, ML-DSA).

Private Machines ENFORCER is developed by Private Machines Inc.. ProvenRun ProvenHSM is developed by ProvenRun. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Private Machines ENFORCER and ProvenRun ProvenHSM serve similar Key Management use cases: both are Key Management tools, both cover Hardware Security, Encryption. Review the feature comparison above to determine which fits your requirements.