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 9 #ifndef CHACHA_H 10 #define CHACHA_H 11 12 #include <sys/types.h> 13 #include <crypto/chacha20/_chacha.h> 14 15 #define CHACHA_MINKEYLEN 16 16 #define CHACHA_NONCELEN 8 17 #define CHACHA_CTRLEN 8 18 #define CHACHA_STATELEN (CHACHA_NONCELEN+CHACHA_CTRLEN) 19 #define CHACHA_BLOCKLEN 64 20 21 #ifdef CHACHA_EMBED 22 #define LOCAL static 23 #else 24 #define LOCAL 25 #endif 26 27 #ifdef CHACHA_NONCE0_CTR128 28 #define CHACHA_UNUSED __unused 29 #else 30 #define CHACHA_UNUSED 31 #endif 32 33 LOCAL void chacha_keysetup(struct chacha_ctx *x, const u_char *k, u_int kbits); 34 LOCAL void chacha_ivsetup(struct chacha_ctx *x, const u_char *iv CHACHA_UNUSED, 35 const u_char *ctr); 36 LOCAL void chacha_encrypt_bytes(struct chacha_ctx *x, const u_char *m, 37 u_char *c, u_int bytes); 38 39 #undef CHACHA_UNUSED 40 41 #endif /* CHACHA_H */ 42 43