MirBSD manpage: CRYPTO_get_ex_data(3), CRYPTO_set_ex_data(3)

CRYPTO_SET_EX_DATA(3)        OpenSSL        CRYPTO_SET_EX_DATA(3)

NAME

     CRYPTO_set_ex_data, CRYPTO_get_ex_data - internal applica-
     tion specific data functions

SYNOPSIS

      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 mani-
     pulate 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 pre-
     cise 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.

MirBSD #10-current         2005-02-05                           1