May 2025 monthly summary focused on security-hardening in CMS handling for AEAD ciphers within OpenSSL. Delivered a targeted bug fix and robustness improvements to prevent misuse of AEAD algorithms in CMS enveloped data, with explicit initialization checks and a new error signaling mechanism. The changes enhance cryptographic correctness, reduce risk exposure, and improve developer experience when diagnosing misconfigurations.

Concise monthly summary for March 2025 focusing on OpenSSL repository activities and the bug fix delivered.

February 2025: OpenSSL CMS related improvements focused on PWRI with AEAD and libctx stability. Delivered a new -kekcipher option to allow using a separate cipher for password recipient information when AEAD ciphers are used for content encryption, enhancing flexibility and security configuration. Fixed library-context (libctx) propagation in CMS PWRI operations and added a test for streaming encryption/decryption of enveloped content using a password, strengthening correctness and coverage. Overall, these changes improve deploy-time reliability, interoperability with existing setups, and maintainability of the CMS PWRI feature set.

December 2024 monthly summary for openssl/openssl focusing on stabilizing CMS Originator handling to improve reliability and security during CMS X509 processing and key agreement. Implemented memory management fixes, enhanced error handling, and test coverage to prevent leaks, crashes, and regressions.