diff options
Diffstat (limited to 'FreeRTOS-Plus/Source/WolfSSL/wolfssl/wolfcrypt/chacha.h')
| -rw-r--r-- | FreeRTOS-Plus/Source/WolfSSL/wolfssl/wolfcrypt/chacha.h | 36 |
1 files changed, 31 insertions, 5 deletions
diff --git a/FreeRTOS-Plus/Source/WolfSSL/wolfssl/wolfcrypt/chacha.h b/FreeRTOS-Plus/Source/WolfSSL/wolfssl/wolfcrypt/chacha.h index da938c973..72fc58280 100644 --- a/FreeRTOS-Plus/Source/WolfSSL/wolfssl/wolfcrypt/chacha.h +++ b/FreeRTOS-Plus/Source/WolfSSL/wolfssl/wolfcrypt/chacha.h @@ -1,8 +1,8 @@ /* chacha.h * - * Copyright (C) 2006-2015 wolfSSL Inc. + * Copyright (C) 2006-2020 wolfSSL Inc. * - * This file is part of wolfSSL. (formerly known as CyaSSL) + * This file is part of wolfSSL. * * wolfSSL is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -16,9 +16,14 @@ * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA */ +/*! + \file wolfssl/wolfcrypt/chacha.h +*/ + + #ifndef WOLF_CRYPT_CHACHA_H #define WOLF_CRYPT_CHACHA_H @@ -30,12 +35,33 @@ extern "C" { #endif +/* Size of the IV */ +#define CHACHA_IV_WORDS 3 +#define CHACHA_IV_BYTES (CHACHA_IV_WORDS * sizeof(word32)) + +/* Size of ChaCha chunks */ +#define CHACHA_CHUNK_WORDS 16 +#define CHACHA_CHUNK_BYTES (CHACHA_CHUNK_WORDS * sizeof(word32)) + +#ifdef WOLFSSL_X86_64_BUILD +#if defined(USE_INTEL_SPEEDUP) && !defined(NO_CHACHA_ASM) + #define USE_INTEL_CHACHA_SPEEDUP + #define HAVE_INTEL_AVX1 +#endif +#endif + enum { - CHACHA_ENC_TYPE = 7 /* cipher unique type */ + CHACHA_ENC_TYPE = WC_CIPHER_CHACHA, /* cipher unique type */ + CHACHA_MAX_KEY_SZ = 32, }; typedef struct ChaCha { - word32 X[16]; /* state of cipher */ + word32 X[CHACHA_CHUNK_WORDS]; /* state of cipher */ + word32 left; /* number of bytes leftover */ +#ifdef HAVE_INTEL_AVX1 + /* vpshufd reads 16 bytes but we only use bottom 4. */ + byte extra[12]; +#endif } ChaCha; /** |