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); | ||
