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Diffstat (limited to 'src/lib/libcrypto/chacha/chacha.c')
-rw-r--r--src/lib/libcrypto/chacha/chacha.c77
1 files changed, 0 insertions, 77 deletions
diff --git a/src/lib/libcrypto/chacha/chacha.c b/src/lib/libcrypto/chacha/chacha.c
deleted file mode 100644
index 0c384ab88a..0000000000
--- a/src/lib/libcrypto/chacha/chacha.c
+++ /dev/null
@@ -1,77 +0,0 @@
1/* $OpenBSD: chacha.c,v 1.7 2015/12/09 14:07:55 bcook Exp $ */
2/*
3 * Copyright (c) 2014 Joel Sing <jsing@openbsd.org>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18#include <stdint.h>
19
20#include <openssl/chacha.h>
21
22#include "chacha-merged.c"
23
24void
25ChaCha_set_key(ChaCha_ctx *ctx, const unsigned char *key, uint32_t keybits)
26{
27 chacha_keysetup((chacha_ctx *)ctx, key, keybits);
28 ctx->unused = 0;
29}
30
31void
32ChaCha_set_iv(ChaCha_ctx *ctx, const unsigned char *iv,
33 const unsigned char *counter)
34{
35 chacha_ivsetup((chacha_ctx *)ctx, iv, counter);
36 ctx->unused = 0;
37}
38
39void
40ChaCha(ChaCha_ctx *ctx, unsigned char *out, const unsigned char *in, size_t len)
41{
42 unsigned char *k;
43 int i, l;
44
45 /* Consume remaining keystream, if any exists. */
46 if (ctx->unused > 0) {
47 k = ctx->ks + 64 - ctx->unused;
48 l = (len > ctx->unused) ? ctx->unused : len;
49 for (i = 0; i < l; i++)
50 *(out++) = *(in++) ^ *(k++);
51 ctx->unused -= l;
52 len -= l;
53 }
54
55 chacha_encrypt_bytes((chacha_ctx *)ctx, in, out, (uint32_t)len);
56}
57
58void
59CRYPTO_chacha_20(unsigned char *out, const unsigned char *in, size_t len,
60 const unsigned char key[32], const unsigned char iv[8], uint64_t counter)
61{
62 struct chacha_ctx ctx;
63
64 /*
65 * chacha_ivsetup expects the counter to be in u8. Rather than
66 * converting size_t to u8 and then back again, pass a counter of
67 * NULL and manually assign it afterwards.
68 */
69 chacha_keysetup(&ctx, key, 256);
70 chacha_ivsetup(&ctx, iv, NULL);
71 if (counter != 0) {
72 ctx.input[12] = (uint32_t)counter;
73 ctx.input[13] = (uint32_t)(counter >> 32);
74 }
75
76 chacha_encrypt_bytes(&ctx, in, out, (uint32_t)len);
77}