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chacha.h
/* $OpenBSD: chacha.h,v 1.3 2014/05/02 03:27:54 djm Exp $ */
/*
chacha-merged.c version 20080118
D. J. Bernstein
Public domain.
*/
#ifndef CHACHA_H
#define CHACHA_H
struct chacha_ctx {
uint32_t input[16];
};
#define CHACHA_MINKEYLEN 16
#define CHACHA_NONCELEN 8
#define CHACHA_CTRLEN 8
#define CHACHA_STATELEN (CHACHA_NONCELEN+CHACHA_CTRLEN)
#ifdef __cplusplus
extern "C" {
#endif
void chacha_keysetup(struct chacha_ctx *x, const uint8_t *k, uint32_t kbits)
#ifdef HAVE_GCC_BOUNDED_ATTRIBUTE
__attribute__((__bounded__(__minbytes__, 2, CHACHA_MINKEYLEN)))
#endif
;
void chacha_ivsetup(struct chacha_ctx *x, const uint8_t *iv, const uint8_t *ctr)
#ifdef HAVE_GCC_BOUNDED_ATTRIBUTE
__attribute__((__bounded__(__minbytes__, 2, CHACHA_NONCELEN)))
__attribute__((__bounded__(__minbytes__, 3, CHACHA_CTRLEN)))
#endif
;
void chacha_encrypt_bytes(struct chacha_ctx *x, const uint8_t *m,
uint8_t *c, uint32_t bytes)
#ifdef HAVE_GCC_BOUNDED_ATTRIBUTE
__attribute__((__bounded__(__buffer__, 2, 4)))
__attribute__((__bounded__(__buffer__, 3, 4)))
#endif
;
#ifdef __cplusplus
}
#endif
#endif /* CHACHA_H */
chacha_ctx
Definition chacha.h:12