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Revision 1.3, Fri May 2 03:27:54 2014 UTC (10 years, 1 month ago) by djm
Branch: MAIN
CVS Tags: OPENBSD_6_0_BASE, OPENBSD_6_0, OPENBSD_5_9_BASE, OPENBSD_5_9, OPENBSD_5_8_BASE, OPENBSD_5_8, OPENBSD_5_7_BASE, OPENBSD_5_7, OPENBSD_5_6_BASE, OPENBSD_5_6
Changes since 1.2: +5 -5 lines 

revert __bounded change; it causes way more problems for portable than
it solves; pointed out by dtucker@

/* $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

#include <sys/types.h>

struct chacha_ctx {
	u_int input[16];
};

#define CHACHA_MINKEYLEN 	16
#define CHACHA_NONCELEN		8
#define CHACHA_CTRLEN		8
#define CHACHA_STATELEN		(CHACHA_NONCELEN+CHACHA_CTRLEN)
#define CHACHA_BLOCKLEN		64

void chacha_keysetup(struct chacha_ctx *x, const u_char *k, u_int kbits)
    __attribute__((__bounded__(__minbytes__, 2, CHACHA_MINKEYLEN)));
void chacha_ivsetup(struct chacha_ctx *x, const u_char *iv, const u_char *ctr)
    __attribute__((__bounded__(__minbytes__, 2, CHACHA_NONCELEN)))
    __attribute__((__bounded__(__minbytes__, 3, CHACHA_CTRLEN)));
void chacha_encrypt_bytes(struct chacha_ctx *x, const u_char *m,
    u_char *c, u_int bytes)
    __attribute__((__bounded__(__buffer__, 2, 4)))
    __attribute__((__bounded__(__buffer__, 3, 4)));

#endif	/* CHACHA_H */