Infrastructure

OpenSSL 4.0.0 released

OpenSSL 4.0.0 enforces stricter cryptographic validation with breaking changes to PKCS5_PBKDF2_HMAC and CRL checks, forcing infrastructure updates across dependent systems through May 2027.

Tuesday, April 14, 2026 12:00 PM UTC2 MIN READSOURCE: LWN.netBY sys://pipeline

OpenSSL 4.0.0 released with new cryptographic algorithms and incompatible changes including lower bounds checks enforcement for PKCS5_PBKDF2_HMAC with FIPS provider, AKID verification checks, and augmented CRL verification. Supported until May 14, 2027.

Read original at LWN.net

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