1 /* $OpenBSD: chacha.h,v 1.4 2016/08/27 04:04:56 guenther Exp $ */ 2 3 /* 4 chacha-merged.c version 20080118 5 D. J. Bernstein 6 Public domain. 7 8 $FreeBSD$ 9 */ 10 11 #ifndef CHACHA_H 12 #define CHACHA_H 13 14 #include <sys/types.h> 15 16 struct chacha_ctx { 17 u_int input[16]; 18 }; 19 20 #define CHACHA_MINKEYLEN 16 21 #define CHACHA_NONCELEN 8 22 #define CHACHA_CTRLEN 8 23 #define CHACHA_STATELEN (CHACHA_NONCELEN+CHACHA_CTRLEN) 24 #define CHACHA_BLOCKLEN 64 25 26 #ifdef _KERNEL 27 #define LOCAL 28 #else 29 #define LOCAL static 30 #endif 31 32 LOCAL void chacha_keysetup(struct chacha_ctx *x, const u_char *k, u_int kbits); 33 LOCAL void chacha_ivsetup(struct chacha_ctx *x, const u_char *iv, const u_char *ctr); 34 LOCAL void chacha_encrypt_bytes(struct chacha_ctx *x, const u_char *m, 35 u_char *c, u_int bytes); 36 37 #endif /* CHACHA_H */ 38 39