OpenSSL:Init
lastmod 2026-11-10created 2017-11-122 edits
OpenSSL initialization is the procedure of registering algorithms, error strings, thread support, and so on before using the OpenSSL library. Up through the 1.0 series, you had to call functions such as SSL_library_init, OpenSSL_add_all_algorithms, and ERR_load_crypto_strings directly and pair them with cleanup functions at shutdown. Since 1.1.0, OPENSSL_init_ssl and OPENSSL_init_crypto are called automatically, so explicit initialization and cleanup are mostly unnecessary.