1CRYPTO_set_ex_data(3)               OpenSSL              CRYPTO_set_ex_data(3)
2
3
4

NAME

6       CRYPTO_set_ex_data, CRYPTO_get_ex_data - internal application specific
7       data functions
8

SYNOPSIS

10        int CRYPTO_set_ex_data(CRYPTO_EX_DATA *r, int idx, void *arg);
11
12        void *CRYPTO_get_ex_data(CRYPTO_EX_DATA *r, int idx);
13

DESCRIPTION

15       Several OpenSSL structures can have application specific data attached
16       to them.  These functions are used internally by OpenSSL to manipulate
17       application specific data attached to a specific structure.
18
19       These functions should only be used by applications to manipulate
20       CRYPTO_EX_DATA structures passed to the new_func(), free_func() and
21       dup_func() callbacks: as passed to RSA_get_ex_new_index() for example.
22
23       CRYPTO_set_ex_data() is used to set application specific data, the data
24       is supplied in the arg parameter and its precise meaning is up to the
25       application.
26
27       CRYPTO_get_ex_data() is used to retrieve application specific data. The
28       data is returned to the application, this will be the same value as
29       supplied to a previous CRYPTO_set_ex_data() call.
30

RETURN VALUES

32       CRYPTO_set_ex_data() returns 1 on success or 0 on failure.
33
34       CRYPTO_get_ex_data() returns the application data or 0 on failure. 0
35       may also be valid application data but currently it can only fail if
36       given an invalid idx parameter.
37
38       On failure an error code can be obtained from ERR_get_error(3).
39

SEE ALSO

41       RSA_get_ex_new_index(3), DSA_get_ex_new_index(3),
42       DH_get_ex_new_index(3)
43

HISTORY

45       CRYPTO_set_ex_data() and CRYPTO_get_ex_data() have been available since
46       SSLeay 0.9.0.
47
48
49
500.9.8b                            2000-01-29             CRYPTO_set_ex_data(3)
Impressum