int X509_STORE_CTX_set_ex_data(X509_STORE_CTX *d, int idx, void *arg);
char *X509_STORE_CTX_get_ex_data(X509_STORE_CTX *d, int idx);
DESCRIPTION
These functions handle application specific data in X509_STORE_CTX
structures. Their usage is identical to that of
RSA_get_ex_new_index(), RSA_set_ex_data() and RSA_get_ex_data() as
described in RSA_get_ex_new_index(3).
NOTES
This mechanism is used internally by the ssl library to store the SSL structure associated with a verification
operation in an X509_STORE_CTX
structure.