/* $NetBSD: chacha.h,v 1.2.4.1 2023/12/25 12:31:03 martin Exp $ */ /* $OpenBSD: chacha.h,v 1.5 2021/04/03 05:54:14 djm Exp $ */ /* chacha-merged.c version 20080118 D. J. Bernstein Public domain. */ #ifndef CHACHA_H #define CHACHA_H #include #include 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 */