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SSL_GET_CURRENT_CIPHER(3) Library Functions Manual SSL_GET_CURRENT_CIPHER(3)

SSL_get_current_cipher, SSL_get_cipher, SSL_get_cipher_name, SSL_get_cipher_bits, SSL_get_cipher_version
get SSL_CIPHER of a connection

#include <openssl/ssl.h>
const SSL_CIPHER *
SSL_get_current_cipher(const SSL *ssl);
const char *
SSL_get_cipher(const SSL *ssl);
const char *
SSL_get_cipher_name(const SSL *ssl);
int
SSL_get_cipher_bits(const SSL *ssl, int *np);
char *
SSL_get_cipher_version(const SSL *ssl);

SSL_get_current_cipher() returns a pointer to an SSL_CIPHER object containing the description of the actually used cipher of a connection established with the ssl object. See SSL_CIPHER_get_name(3) for more details.
SSL_get_cipher_name() obtains the name of the currently used cipher. SSL_get_cipher() is identical to SSL_get_cipher_name().
SSL_get_cipher_bits() obtains the number of secret/algorithm bits used and SSL_get_cipher_version() returns the protocol name.
SSL_get_cipher(), SSL_get_cipher_name(), SSL_get_cipher_bits(), and SSL_get_cipher_version() are implemented as macros.

SSL_get_current_cipher() returns the cipher actually used, or NULL if no session has been established.

ssl(3), SSL_CIPHER_get_name(3)

SSL_get_cipher() appeared in SSLeay 0.4 or earlier. SSL_get_cipher_bits() first appeared in SSLeay 0.6.4. SSL_get_cipher_name() and SSL_get_cipher_version() first appeared in SSLeay 0.8.0. SSL_get_current_cipher() first appeared in SSLeay 0.8.1. These functions have been available since OpenBSD 2.4.
March 27, 2018 OpenBSD-current