libssh 0.11.1 The SSH library

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chacha.h
1/* $OpenBSD: chacha.h,v 1.3 2014/05/02 03:27:54 djm Exp $ */
2
3/*
4 chacha-merged.c version 20080118
5 D. J. Bernstein
6 Public domain.
7*/
8
9#ifndef CHACHA_H
10#define CHACHA_H
11
12 struct chacha_ctx {
13 uint32_t input[16];
14};
15
16#define CHACHA_MINKEYLEN 16
17#define CHACHA_NONCELEN 8
18#define CHACHA_CTRLEN 8
19#define CHACHA_STATELEN (CHACHA_NONCELEN+CHACHA_CTRLEN)
20
21#ifdef __cplusplus
22 extern "C" {
23#endif
24
25 void chacha_keysetup(struct chacha_ctx *x, const uint8_t *k, uint32_t kbits)
26#ifdef HAVE_GCC_BOUNDED_ATTRIBUTE
27 __attribute__((__bounded__(__minbytes__, 2, CHACHA_MINKEYLEN)))
28#endif
29 ;
30 void chacha_ivsetup(struct chacha_ctx *x, const uint8_t *iv, const uint8_t *ctr)
31#ifdef HAVE_GCC_BOUNDED_ATTRIBUTE
32 __attribute__((__bounded__(__minbytes__, 2, CHACHA_NONCELEN)))
33 __attribute__((__bounded__(__minbytes__, 3, CHACHA_CTRLEN)))
34#endif
35 ;
36 void chacha_encrypt_bytes(struct chacha_ctx *x, const uint8_t *m,
37 uint8_t *c, uint32_t bytes)
38#ifdef HAVE_GCC_BOUNDED_ATTRIBUTE
39 __attribute__((__bounded__(__buffer__, 2, 4)))
40 __attribute__((__bounded__(__buffer__, 3, 4)))
41#endif
42 ;
43
44#ifdef __cplusplus
45}
46#endif
47
48#endif /* CHACHA_H */
chacha_ctx
Definition chacha.h:12