diff options
Diffstat (limited to 'src/lib/libcrypto/evp/evp_aead.c')
-rw-r--r-- | src/lib/libcrypto/evp/evp_aead.c | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/src/lib/libcrypto/evp/evp_aead.c b/src/lib/libcrypto/evp/evp_aead.c deleted file mode 100644 index b35f5157ed..0000000000 --- a/src/lib/libcrypto/evp/evp_aead.c +++ /dev/null | |||
@@ -1,170 +0,0 @@ | |||
1 | /* $OpenBSD: evp_aead.c,v 1.11 2024/04/09 13:52:41 beck Exp $ */ | ||
2 | /* | ||
3 | * Copyright (c) 2014, Google Inc. | ||
4 | * | ||
5 | * Permission to use, copy, modify, and/or 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 ANY | ||
12 | * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | ||
13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION | ||
14 | * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN | ||
15 | * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | ||
16 | */ | ||
17 | |||
18 | #include <limits.h> | ||
19 | #include <string.h> | ||
20 | |||
21 | #include <openssl/evp.h> | ||
22 | #include <openssl/err.h> | ||
23 | |||
24 | #include "evp_local.h" | ||
25 | |||
26 | size_t | ||
27 | EVP_AEAD_key_length(const EVP_AEAD *aead) | ||
28 | { | ||
29 | return aead->key_len; | ||
30 | } | ||
31 | LCRYPTO_ALIAS(EVP_AEAD_key_length); | ||
32 | |||
33 | size_t | ||
34 | EVP_AEAD_nonce_length(const EVP_AEAD *aead) | ||
35 | { | ||
36 | return aead->nonce_len; | ||
37 | } | ||
38 | LCRYPTO_ALIAS(EVP_AEAD_nonce_length); | ||
39 | |||
40 | size_t | ||
41 | EVP_AEAD_max_overhead(const EVP_AEAD *aead) | ||
42 | { | ||
43 | return aead->overhead; | ||
44 | } | ||
45 | LCRYPTO_ALIAS(EVP_AEAD_max_overhead); | ||
46 | |||
47 | size_t | ||
48 | EVP_AEAD_max_tag_len(const EVP_AEAD *aead) | ||
49 | { | ||
50 | return aead->max_tag_len; | ||
51 | } | ||
52 | LCRYPTO_ALIAS(EVP_AEAD_max_tag_len); | ||
53 | |||
54 | int | ||
55 | EVP_AEAD_CTX_init(EVP_AEAD_CTX *ctx, const EVP_AEAD *aead, | ||
56 | const unsigned char *key, size_t key_len, size_t tag_len, ENGINE *impl) | ||
57 | { | ||
58 | ctx->aead = aead; | ||
59 | if (key_len != aead->key_len) { | ||
60 | EVPerror(EVP_R_UNSUPPORTED_KEY_SIZE); | ||
61 | return 0; | ||
62 | } | ||
63 | return aead->init(ctx, key, key_len, tag_len); | ||
64 | } | ||
65 | LCRYPTO_ALIAS(EVP_AEAD_CTX_init); | ||
66 | |||
67 | void | ||
68 | EVP_AEAD_CTX_cleanup(EVP_AEAD_CTX *ctx) | ||
69 | { | ||
70 | if (ctx->aead == NULL) | ||
71 | return; | ||
72 | ctx->aead->cleanup(ctx); | ||
73 | ctx->aead = NULL; | ||
74 | } | ||
75 | LCRYPTO_ALIAS(EVP_AEAD_CTX_cleanup); | ||
76 | |||
77 | EVP_AEAD_CTX * | ||
78 | EVP_AEAD_CTX_new(void) | ||
79 | { | ||
80 | return calloc(1, sizeof(EVP_AEAD_CTX)); | ||
81 | } | ||
82 | LCRYPTO_ALIAS(EVP_AEAD_CTX_new); | ||
83 | |||
84 | void | ||
85 | EVP_AEAD_CTX_free(EVP_AEAD_CTX *ctx) | ||
86 | { | ||
87 | if (ctx == NULL) | ||
88 | return; | ||
89 | |||
90 | EVP_AEAD_CTX_cleanup(ctx); | ||
91 | free(ctx); | ||
92 | } | ||
93 | LCRYPTO_ALIAS(EVP_AEAD_CTX_free); | ||
94 | |||
95 | /* check_alias returns 0 if out points within the buffer determined by in | ||
96 | * and in_len and 1 otherwise. | ||
97 | * | ||
98 | * When processing, there's only an issue if out points within in[:in_len] | ||
99 | * and isn't equal to in. If that's the case then writing the output will | ||
100 | * stomp input that hasn't been read yet. | ||
101 | * | ||
102 | * This function checks for that case. */ | ||
103 | static int | ||
104 | check_alias(const unsigned char *in, size_t in_len, const unsigned char *out) | ||
105 | { | ||
106 | if (out <= in) | ||
107 | return 1; | ||
108 | if (in + in_len <= out) | ||
109 | return 1; | ||
110 | return 0; | ||
111 | } | ||
112 | |||
113 | int | ||
114 | EVP_AEAD_CTX_seal(const EVP_AEAD_CTX *ctx, unsigned char *out, size_t *out_len, | ||
115 | size_t max_out_len, const unsigned char *nonce, size_t nonce_len, | ||
116 | const unsigned char *in, size_t in_len, const unsigned char *ad, | ||
117 | size_t ad_len) | ||
118 | { | ||
119 | size_t possible_out_len = in_len + ctx->aead->overhead; | ||
120 | |||
121 | /* Overflow. */ | ||
122 | if (possible_out_len < in_len) { | ||
123 | EVPerror(EVP_R_TOO_LARGE); | ||
124 | goto error; | ||
125 | } | ||
126 | |||
127 | if (!check_alias(in, in_len, out)) { | ||
128 | EVPerror(EVP_R_OUTPUT_ALIASES_INPUT); | ||
129 | goto error; | ||
130 | } | ||
131 | |||
132 | if (ctx->aead->seal(ctx, out, out_len, max_out_len, nonce, nonce_len, | ||
133 | in, in_len, ad, ad_len)) { | ||
134 | return 1; | ||
135 | } | ||
136 | |||
137 | error: | ||
138 | /* In the event of an error, clear the output buffer so that a caller | ||
139 | * that doesn't check the return value doesn't send raw data. */ | ||
140 | memset(out, 0, max_out_len); | ||
141 | *out_len = 0; | ||
142 | return 0; | ||
143 | } | ||
144 | LCRYPTO_ALIAS(EVP_AEAD_CTX_seal); | ||
145 | |||
146 | int | ||
147 | EVP_AEAD_CTX_open(const EVP_AEAD_CTX *ctx, unsigned char *out, size_t *out_len, | ||
148 | size_t max_out_len, const unsigned char *nonce, size_t nonce_len, | ||
149 | const unsigned char *in, size_t in_len, const unsigned char *ad, | ||
150 | size_t ad_len) | ||
151 | { | ||
152 | if (!check_alias(in, in_len, out)) { | ||
153 | EVPerror(EVP_R_OUTPUT_ALIASES_INPUT); | ||
154 | goto error; | ||
155 | } | ||
156 | |||
157 | if (ctx->aead->open(ctx, out, out_len, max_out_len, nonce, nonce_len, | ||
158 | in, in_len, ad, ad_len)) { | ||
159 | return 1; | ||
160 | } | ||
161 | |||
162 | error: | ||
163 | /* In the event of an error, clear the output buffer so that a caller | ||
164 | * that doesn't check the return value doesn't try and process bad | ||
165 | * data. */ | ||
166 | memset(out, 0, max_out_len); | ||
167 | *out_len = 0; | ||
168 | return 0; | ||
169 | } | ||
170 | LCRYPTO_ALIAS(EVP_AEAD_CTX_open); | ||