1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
/* Header file for encrypted-stream library.
* Written by Ken Raeburn (Raeburn@Cygnus.COM).
* Copyright (C) 1991, 1992, 1994 by Cygnus Support.
*
* Permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation.
* Cygnus Support makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*/
#ifndef K5STREAM_H
#define K5STREAM_H
typedef struct kstream_int { /* Object we pass around */
int fd; /* Open socket descriptor */
int (*encrypt)(struct kstream_data_block *, /* output */
struct kstream_data_block *, /* input */
struct kstream *kstream);
int (*decrypt)(struct kstream_data_block *, /* output */
struct kstream_data_block *, /* input */
struct kstream *kstream);
} *kstream;
typedef void *kstream_ptr; /* Data send on the kstream */
struct kstream_data_block {
kstream_ptr ptr;
size_t length;
};
struct kstream_crypt_ctl_block {
int (*encrypt)(struct kstream_data_block *, /* output */
struct kstream_data_block *, /* input */
kstream);
int (*decrypt)(struct kstream_data_block *, /* output */
struct kstream_data_block *, /* input */
kstream);
int (*init)(kstream, kstream_ptr);
void (*destroy)(kstream);
};
/* Prototypes */
int kstream_destroy(kstream);
void kstream_set_buffer_mode(kstream, int);
kstream kstream_create_from_fd(int fd,
const struct kstream_crypt_ctl_block FAR *,
kstream_ptr);
int kstream_write(kstream, void FAR *, size_t);
int kstream_read(kstream, void FAR *, size_t);
#endif /* K5STREAM_H */
|
