libssh: chacha.h Source File

libssh 0.10.4 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/*
4chacha-merged.c version 20080118
5D. J. Bernstein
6Public 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
21void chacha_keysetup(struct chacha_ctx *x, const uint8_t *k, uint32_t kbits)
22#ifdef HAVE_GCC_BOUNDED_ATTRIBUTE
23 __attribute__((__bounded__(__minbytes__, 2, CHACHA_MINKEYLEN)))
24#endif
25 ;
26void chacha_ivsetup(struct chacha_ctx *x, const uint8_t *iv, const uint8_t *ctr)
27#ifdef HAVE_GCC_BOUNDED_ATTRIBUTE
28 __attribute__((__bounded__(__minbytes__, 2, CHACHA_NONCELEN)))
29 __attribute__((__bounded__(__minbytes__, 3, CHACHA_CTRLEN)))
30#endif
31 ;
32void chacha_encrypt_bytes(struct chacha_ctx *x, const uint8_t *m,
33 uint8_t *c, uint32_t bytes)
34#ifdef HAVE_GCC_BOUNDED_ATTRIBUTE
35 __attribute__((__bounded__(__buffer__, 2, 4)))
36 __attribute__((__bounded__(__buffer__, 3, 4)))
37#endif
38 ;
39
40#endif /* CHACHA_H */
chacha_ctx
Definition: chacha.h:12