ZT Browser is the first in China to release a version supporting PQC HTTPS encryption

Shenzhen, China – October 11, 2025 – Today, ZT Browser released an updated version - version 137. In addition to continuing to support SM2 HTTPS encryption and SM2 certificate transparency, its biggest highlight is support for post-quantum cryptography (PQC) HTTPS encryption. This is the first browser version in China and the world that supports both post-quantum cryptographic algorithms and commercial cryptographic algorithms, marking that China's HTTPS encryption has also entered the post-quantum cryptography era. And ZT Browser's global exclusive innovation is to display the icon in the address bar, helping global users easily understand whether a website is quantum-safe. This is a market education innovation that promotes global PQC migration.

The updated version of ZT Browser implements the hybrid PQC algorithm X25519MLKEM768 under the TLS 1.3 protocol to implement HTTPS encryption. This is a hybrid PQC HTTPS encryption based on the traditional cryptographic algorithm SSL certificate. The website does not need to replace the SSL certificate, just need to update Web server to support the post-quantum algorithm, ZT Browser will give priority to the PQC algorithm to implement HTTPS encryption, which effectively solves the existing "harvest now, decrypt later" security threat, that is, now collect traffic encrypted with traditional cryptography, and decrypt the encrypted data when quantum computers are available. Therefore, PQC HTTPS encryption must be implemented now to ensure the confidential data of the website system is always safe now and in the quantum era.

ZT Browser implements ECC/RSA+PQC hybrid key encapsulation protocol HTTPS encryption in this update version. It will support the commercial cryptographic algorithm SM2+PQC hybrid key encapsulation protocol HTTPS encryption. ZT Browser’s innovative UI and PQC support has contributed to ensuring the security of global Internet traffic. Download it now to use ZT Browser to ensure the long-term security of valuable confidential data.