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SEALSQ Corp says QS7001 earned NIST SP 800-90B entropy validation

May 28, 2026

SEALSQ Corp said its QS7001 Post-Quantum Secure Element received NIST Entropy Source Validation certificate #E333 under SP 800-90B. The company said the result was confirmed after validation testing and recorded on the NIST Cryptographic Module Validation Program registry.

NIST SP 800-90B covers testing and validation for entropy sources used in random bit generators for cryptographic applications. SEALSQ stated that a validated entropy source is a prerequisite for FIPS 140-3 certification and for Common Criteria EAL5+ certification targets.

According to the company, the QS7001 entropy source uses a ring oscillator-based physical noise source. SEALSQ said the entropy source was classified as a physical noise source with an “Open for Reuse” status.

SEALSQ said validation testing was performed by SERMA Safety and Security, an accredited CSTL based in France, with validation confirmed on May 27, 2026. The company said the ESV submission involved development of a stochastic model, including detailed noise source characterization and statistical analysis, along with documentation prepared by its teams in Meyreuil, France and the IC'ALPS subsidiary (SMH).

“Achieving NIST SP 800-90B Entropy Source Validation for our QS7001 is a critical and hard-earned milestone. Entropy is the bedrock of cryptographic security, without a validated entropy source, no cryptographic module can claim FIPS 140-3 compliance. This certification reflects the depth of engineering expertise and rigorous scientific discipline our teams bring to every layer of our silicon design process. We are on a clear and accelerating trajectory toward full FIPS 140-3 and Common Criteria certification of the QS7001, and this achievement reinforces our commitment to delivering products that meet the highest standards demanded by governments, critical infrastructure operators, and defense organizations worldwide.” Carlos Moreira, CEO of SEALSQ, said. “This result is the product of excellent teamwork across our Meyreuil hardware team and our IC'ALPS subsidiary. Special recognition goes to the team members who developed the stochastic model and the detailed documentation that made this validation possible. This is an important building block for both the FIPS 140-3 and Common Criteria certification efforts and demonstrates SEALSQ's commitment to rigorous, internationally recognized security validation.” Jean-Pierre Enguent, VP Engineering at SEALSQ, said.

Related Perspectives

CISA issues update on missing IPsec integrity for Verizon IMS SIP signaling

June 2, 2026

Overview VoLTE deployments on Verizon’s IMS network have historically lacked IPsec-based integrity protection for SIP signaling, contravening well-established requirements in 3GPP TS 33.203 and GSMA IR.92. As a result, SIP messages—including registration (REGISTER), call setup (INVITE), and messaging (MESSAGE)—were transmitted in plaintext without cryptographic guarantees of integrity or authenticity. Passive analysis of live traffic over multiple months confirmed the consistent absence of SIP Security Agreement headers and ESP traffic, indicating a systematic configuration decision rather than an isolated anomaly. In response to repeated follow-up inquiries, Verizon stated on [insert date] that integrity support is “currently available at their request” and will be extended to all UEs “starting later this year.” Separately, the researchers recently observed that Apple’s iOS 26.5 carrier bundle (released May 11, 2026) includes IMS IPsec-related configuration entries—an indication that device-side support may now be active or enabled in newer software. While this change is promising, its real-world impact remains uncertain: there is no evidence yet that Verizon has modified its network to enforce IPsec, that the configuration is being activated per session, or that integrity is functionally operational in production deployments. Absent explicit verification (e.g., captured ESP traffic or official confirmation), this may reflect preparatory software changes rather than an end-to-end security upgrade. The vulnerability remains active for the vast majority of Verizon VoLTE users during the unprotected period, and until network-level enforcement is observed and confirmed, the risk of on-path signaling manipulation endures. Description CVE-2026-10629 SIP signaling stack in Verizon IMS (unspecified version) implements SIP signaling without IPsec integrity protection (missing Security-Client/Security-Server headers and ESP traffic), which allows an on-path attacker to compromise confidentiality, integrity, and authenticity of VoLTE signaling via passive monitoring and active manipulation of unsecured SIP messages over the radio and core network. According to 3GPP TS 33.203 and GSMA IR.92, SIP signaling between the UE and P-CSCF in IMS networks must be protected using IPsec ESP with mandatory integrity following IMS AKA authentication. This protection is negotiated via SIP Security Agreement headers (Security-Client, Security-Server, Security-Verify) during registration and results in integrity-protected ESP traffic for all subsequent signaling messages. However, observations conducted over several weeks on Verizon’s network showed no such headers in use. The REGISTER exchange lacked any security negotiation, and post-registration SIP traffic—including INVITE, MESSAGE, BYE, and UPDATE—traversed the network in plaintext over standard UDP/TCP, with no ESP encapsulation. This pattern was consistent across device models and network conditions, indicating a systemic configuration decision rather than a transient issue. The absence of integrity checking means any modification to SIP messages—including redirection of emergency calls or injection of fake message payloads—would go undetected by both the UE and the IMS core. No technical justification for this deviation from globally adopted security practices has been provided by Verizon, and prior engagement failed to elicit a substantive response beyond the recent, non-binding commitment to future deployment. Impact The lack of IPsec integrity protection enables on-path attackers—including those controlling femtocells, compromised base stations, or IMS intermediaries—to intercept, modify, replay, or inject SIP messages without detection. These capabilities permit call hijacking, spoofing of SMS-over-IMS, denial-of-service through forged BYE or CANCEL, and manipulation of emergency call routing—without requiring compromise of the UE, SIM, or backend infrastructure. Because SIP signaling lacks cryptographic integrity, all such modifications go unnoticed by both the UE and the IMS core, undermining core security assumptions of VoLTE. While the recently observed iOS 26.5 configuration change may signal progress toward a more secure implementation, its operational impact is yet to be demonstrated; until then, the risk remains real and unmitigated for users on unprotected deployments. Solution Until the vulnerability is fully mitigated by Verizon, users and enterprises should continue to assume VoLTE signaling is untrusted for high-assurance operations. Acknowledgements Thanks to DongWon Lee, Jeongmin Choi, and CheolJun Park from Kyung Hee University for their thorough technical report, persistent follow-up efforts, and the additional observation regarding iOS 26.5. Their work has significantly advanced the understanding of this issue and helped keep the discussion grounded in observable behavior. This AI-assisted document was written by Timur Snoke.