EVP_MAC default algorithm selection divergence between OpenSSL 3.0 and 3.1
EVP_MAC provides a generic message-authentication-code interface introduced in OpenSSL 3.0, designed to replace legacy EVP_Digest and HMAC functions while supporting incremental updates and key derivation. When no algorithm is explicitly specified during fetching, the default MAC algorithm selection order varies between OpenSSL 3.0 and 3.1, potentially affec
openssl