diff options
Diffstat (limited to 'src/lib/libcrypto/chacha/chacha.c')
-rw-r--r-- | src/lib/libcrypto/chacha/chacha.c | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/src/lib/libcrypto/chacha/chacha.c b/src/lib/libcrypto/chacha/chacha.c deleted file mode 100644 index b60e3c4f27..0000000000 --- a/src/lib/libcrypto/chacha/chacha.c +++ /dev/null | |||
@@ -1,112 +0,0 @@ | |||
1 | /* $OpenBSD: chacha.c,v 1.10 2023/07/05 16:17:20 beck 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 | |||
24 | void | ||
25 | ChaCha_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 | LCRYPTO_ALIAS(ChaCha_set_key); | ||
31 | |||
32 | void | ||
33 | ChaCha_set_iv(ChaCha_ctx *ctx, const unsigned char *iv, | ||
34 | const unsigned char *counter) | ||
35 | { | ||
36 | chacha_ivsetup((chacha_ctx *)ctx, iv, counter); | ||
37 | ctx->unused = 0; | ||
38 | } | ||
39 | LCRYPTO_ALIAS(ChaCha_set_iv); | ||
40 | |||
41 | void | ||
42 | ChaCha(ChaCha_ctx *ctx, unsigned char *out, const unsigned char *in, size_t len) | ||
43 | { | ||
44 | unsigned char *k; | ||
45 | uint64_t n; | ||
46 | int i, l; | ||
47 | |||
48 | /* Consume remaining keystream, if any exists. */ | ||
49 | if (ctx->unused > 0) { | ||
50 | k = ctx->ks + 64 - ctx->unused; | ||
51 | l = (len > ctx->unused) ? ctx->unused : len; | ||
52 | for (i = 0; i < l; i++) | ||
53 | *(out++) = *(in++) ^ *(k++); | ||
54 | ctx->unused -= l; | ||
55 | len -= l; | ||
56 | } | ||
57 | |||
58 | while (len > 0) { | ||
59 | if ((n = len) > UINT32_MAX) | ||
60 | n = UINT32_MAX; | ||
61 | |||
62 | chacha_encrypt_bytes((chacha_ctx *)ctx, in, out, (uint32_t)n); | ||
63 | |||
64 | in += n; | ||
65 | out += n; | ||
66 | len -= n; | ||
67 | } | ||
68 | } | ||
69 | LCRYPTO_ALIAS(ChaCha); | ||
70 | |||
71 | void | ||
72 | CRYPTO_chacha_20(unsigned char *out, const unsigned char *in, size_t len, | ||
73 | const unsigned char key[32], const unsigned char iv[8], uint64_t counter) | ||
74 | { | ||
75 | struct chacha_ctx ctx; | ||
76 | uint64_t n; | ||
77 | |||
78 | /* | ||
79 | * chacha_ivsetup expects the counter to be in u8. Rather than | ||
80 | * converting size_t to u8 and then back again, pass a counter of | ||
81 | * NULL and manually assign it afterwards. | ||
82 | */ | ||
83 | chacha_keysetup(&ctx, key, 256); | ||
84 | chacha_ivsetup(&ctx, iv, NULL); | ||
85 | if (counter != 0) { | ||
86 | ctx.input[12] = (uint32_t)counter; | ||
87 | ctx.input[13] = (uint32_t)(counter >> 32); | ||
88 | } | ||
89 | |||
90 | while (len > 0) { | ||
91 | if ((n = len) > UINT32_MAX) | ||
92 | n = UINT32_MAX; | ||
93 | |||
94 | chacha_encrypt_bytes(&ctx, in, out, (uint32_t)n); | ||
95 | |||
96 | in += n; | ||
97 | out += n; | ||
98 | len -= n; | ||
99 | } | ||
100 | } | ||
101 | LCRYPTO_ALIAS(CRYPTO_chacha_20); | ||
102 | |||
103 | void | ||
104 | CRYPTO_xchacha_20(unsigned char *out, const unsigned char *in, size_t len, | ||
105 | const unsigned char key[32], const unsigned char iv[24]) | ||
106 | { | ||
107 | uint8_t subkey[32]; | ||
108 | |||
109 | CRYPTO_hchacha_20(subkey, key, iv); | ||
110 | CRYPTO_chacha_20(out, in, len, subkey, iv + 16, 0); | ||
111 | } | ||
112 | LCRYPTO_ALIAS(CRYPTO_xchacha_20); | ||