Synopsis

#include  <openssl/dsa.h>

int DSA_get_ex_new_index(long argl, void *argp,
               CRYPTO_EX_new *new_func,
               CRYPTO_EX_dup *dup_func,
               CRYPTO_EX_free *free_func);

int DSA_set_ex_data(DSA *d, int idx, void *arg);

char *DSA_get_ex_data(DSA *d, int idx);