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CRYPTO_set_ex_data(3) OpenSSL CRYPTO_set_ex_data(3)
NAME
CRYPTO_set_ex_data, CRYPTO_get_ex_data - internal application specific data functions
SYNOPSIS
#include <openssl/crypto.h>
int CRYPTO_set_ex_data(CRYPTO_EX_DATA *r, int idx, void *arg);
void *CRYPTO_get_ex_data(CRYPTO_EX_DATA *r, int idx);
DESCRIPTION
Several OpenSSL structures can have application specific data attached to them. These
functions are used internally by OpenSSL to manipulate application specific data attached
to a specific structure.
These functions should only be used by applications to manipulate CRYPTO_EX_DATA
structures passed to the new_func(), free_func() and dup_func() callbacks: as passed to
RSA_get_ex_new_index() for example.
CRYPTO_set_ex_data() is used to set application specific data, the data is supplied in the
arg parameter and its precise meaning is up to the application.
CRYPTO_get_ex_data() is used to retrieve application specific data. The data is returned
to the application, this will be the same value as supplied to a previous
CRYPTO_set_ex_data() call.
RETURN VALUES
CRYPTO_set_ex_data() returns 1 on success or 0 on failure.
CRYPTO_get_ex_data() returns the application data or 0 on failure. 0 may also be valid
application data but currently it can only fail if given an invalid idx parameter.
On failure an error code can be obtained from ERR_get_error(3).
SEE ALSO
RSA_get_ex_new_index(3), DSA_get_ex_new_index(3), DH_get_ex_new_index(3)
HISTORY
CRYPTO_set_ex_data() and CRYPTO_get_ex_data() have been available since SSLeay 0.9.0.
1.0.2k 2017-01-26 CRYPTO_set_ex_data(3)
Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache
Under GNU General Public License
2024-04-19 08:03 @18.221.15.15 CrawledBy Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)