RECENT BLOG NEWS

wolfSSL now sends the correct alert when a TLS 1.3 server requires the Server Name Indication (SNI) extension and the client fails to include it. Previously, the server sent a generic handshake_failure alert; it now sends the missing_extension alert defined by RFC 8446 for exactly this case. TLS 1.2 and earlier keep the existing handshake_failure […]

wolfSSL has refined its X.509 serial number validation to better handle real-world trust stores. Previously, wolfSSL rejected any certificate with a serial number of 0. While RFC 5280 requires CAs to issue certificates with positive serial numbers, some long-standing self-signed root CA certificates in circulation were created with serial 0, and rejecting them caused otherwise […]

We’re pleased to announce that wolfSSL can now be integrated directly into the secure sockets layer of the Zephyr RTOS. The required patches are available now in our Open Source Project (OSP) repository. What This Means These patches let you swap out mbedTLS and use wolfSSL as the TLS provider behind Zephyr’s native socket API. […]

TLS 1.3 normally forces a choice: authenticate with certificates or with a pre-shared key, but not both in the same handshake. Combining them gives you a second, independent root of trust that survives even if the first one falls — and wolfSSL now supports both doing this and requiring it. The foundation is RFC 8773, […]

wolfSSL now supports the stateful hash-based signature schemes LMS/HSS and XMSS/XMSS^MT in X.509 certificates, following RFC 9802. What’s New Both sides of the certificate lifecycle are covered: Generation – Sign certificates and CSRs with an LMS/HSS or XMSS/XMSS^MT key, encoded exactly as RFC 9802 specifies. Verification – Parse and verify certificate chains that use these […]

We’re excited to share that wolfCrypt now runs a full modern crypto suite on Texas Instruments’ C2000 C28x – the NIST post-quantum schemes ML-DSA (FIPS 204) and ML-KEM (FIPS 203), plus RSA, Diffie-Hellman, AES, ChaCha20-Poly1305, HMAC/HKDF, the Curve25519/Ed25519, Curve448/Ed448, and NIST P-256 elliptic-curve schemes, and the SHA-1/2/3 and SHAKE hash families – all validated on […]