SEALSQ Corp (NASDAQ: LAES) filed a patent application for protection against side-channel attacks on polynomial cryptographic algorithms, according to a company statement. The filing comes as Google announced a 2029 deadline for complete post-quantum cryptography migration across its ecosystem.

The patent addresses vulnerabilities in polynomial-based post-quantum cryptography algorithms at the message encoding stage. The technology targets hardware implementations that could be exploited through power consumption, electromagnetic emissions, or timing variations.

Google's migration timeline affects critical systems including Android 17 secure boot, Chromecast device authentication, TLS protocols, Widevine license requests currently using RSA-2048, and cloud bootstrap processes.

The patent filing coincides with the sampling phase of SEALSQ's QS7001 Quantum Shield secure element, which the company describes as its first native post-quantum secure microcontroller. The QS7001 incorporates NIST-approved algorithms ML-KEM/Kyber and ML-DSA/Dilithium directly in silicon.

"Google's 2029 deadline is a strong wake-up call for the entire industry: software-only solutions will not suffice for long-term security," said Jean-Pierre Enguent, Chief Technology Officer of SEALSQ.

SEALSQ reported having 126 active patents and more than 1.75 billion secure semiconductors deployed worldwide. The company develops semiconductors, public key infrastructure, and post-quantum technology hardware and software products.

The company's quantum-resistant ecosystem combines post-quantum cryptography-secure semiconductors, the INeS PKI platform, and cryptographic agility services for original equipment manufacturers.