diff options
Diffstat (limited to 'ecp/src/ecp/crypto/chacha/chacha.c')
-rw-r--r-- | ecp/src/ecp/crypto/chacha/chacha.c | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/ecp/src/ecp/crypto/chacha/chacha.c b/ecp/src/ecp/crypto/chacha/chacha.c deleted file mode 100644 index fba03c9..0000000 --- a/ecp/src/ecp/crypto/chacha/chacha.c +++ /dev/null @@ -1,77 +0,0 @@ -/* $OpenBSD: chacha.c,v 1.7 2015/12/09 14:07:55 bcook Exp $ */ -/* - * Copyright (c) 2014 Joel Sing <jsing@openbsd.org> - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include <stdint.h> - -#include <chacha.h> - -#include "chacha-merged.c" - -void -ChaCha_set_key(ChaCha_ctx *ctx, const unsigned char *key, uint32_t keybits) -{ - chacha_keysetup((chacha_ctx *)ctx, key, keybits); - ctx->unused = 0; -} - -void -ChaCha_set_iv(ChaCha_ctx *ctx, const unsigned char *iv, - const unsigned char *counter) -{ - chacha_ivsetup((chacha_ctx *)ctx, iv, counter); - ctx->unused = 0; -} - -void -ChaCha(ChaCha_ctx *ctx, unsigned char *out, const unsigned char *in, size_t len) -{ - unsigned char *k; - int i, l; - - /* Consume remaining keystream, if any exists. */ - if (ctx->unused > 0) { - k = ctx->ks + 64 - ctx->unused; - l = (len > ctx->unused) ? ctx->unused : len; - for (i = 0; i < l; i++) - *(out++) = *(in++) ^ *(k++); - ctx->unused -= l; - len -= l; - } - - chacha_encrypt_bytes((chacha_ctx *)ctx, in, out, (uint32_t)len); -} - -void -CRYPTO_chacha_20(unsigned char *out, const unsigned char *in, size_t len, - const unsigned char key[32], const unsigned char iv[8], uint64_t counter) -{ - struct chacha_ctx ctx; - - /* - * chacha_ivsetup expects the counter to be in u8. Rather than - * converting size_t to u8 and then back again, pass a counter of - * NULL and manually assign it afterwards. - */ - chacha_keysetup(&ctx, key, 256); - chacha_ivsetup(&ctx, iv, NULL); - if (counter != 0) { - ctx.input[12] = (uint32_t)counter; - ctx.input[13] = (uint32_t)(counter >> 32); - } - - chacha_encrypt_bytes(&ctx, in, out, (uint32_t)len); -} |