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 #include <crypto/chacha20/_chacha.h> 16 17 #define CHACHA_MINKEYLEN 16 18 #define CHACHA_NONCELEN 8 19 #define CHACHA_CTRLEN 8 20 #define CHACHA_STATELEN (CHACHA_NONCELEN+CHACHA_CTRLEN) 21 #define CHACHA_BLOCKLEN 64 22 23 #ifdef CHACHA_EMBED 24 #define LOCAL static 25 #else 26 #define LOCAL 27 #endif 28 29 #ifdef CHACHA_NONCE0_CTR128 30 #define CHACHA_UNUSED __unused 31 #else 32 #define CHACHA_UNUSED 33 #endif 34 35 LOCAL void chacha_keysetup(struct chacha_ctx *x, const u_char *k, u_int kbits); 36 LOCAL void chacha_ivsetup(struct chacha_ctx *x, const u_char *iv CHACHA_UNUSED, 37 const u_char *ctr); 38 LOCAL void chacha_encrypt_bytes(struct chacha_ctx *x, const u_char *m, 39 u_char *c, u_int bytes); 40 41 #undef CHACHA_UNUSED 42 43 #endif /* CHACHA_H */ 44 45