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SSL_CTX_SET_KEYLOG_CALLBACK(3) FreeBSD Library Functions Manual NAME SSL_CTX_set_keylog_callback, SSL_CTX_get_keylog_callback - set and get the unused key logging callback SYNOPSIS #include <openssl/ssl.h> typedef void (*SSL_CTX_keylog_cb_func)(const SSL *ssl, const char *line); void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb); SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx); DESCRIPTION SSL_CTX_set_keylog_callback() sets the TLS key logging callback. This callback is never called in LibreSSL. SSL_CTX_get_keylog_callback() retrieves the previously set TLS key logging callback. These functions are provided only for compatibility with OpenSSL. RETURN VALUES SSL_CTX_get_keylog_callback() returns the previously set TLS key logging callback, or NULL if no callback has been set. SEE ALSO ssl(3), SSL_CTX_new(3) HISTORY These function first appeared in OpenSSL 1.1.1 and have been available since OpenBSD 7.1. FreeBSD 14.1-RELEASE-p8 May 16, 2024 FreeBSD 14.1-RELEASE-p8