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/*
* Copyright 2022-present MongoDB, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "mc-tokens-private.h"
#include "mongocrypt-buffer-private.h"
/// Define a token type of the given name, with constructor parameters given as
/// the remaining arguments. This macro usage should be followed by the
/// constructor body, with the implicit first argument '_mongocrypt_crypto_t*
/// crypto' and final argument 'mongocrypt_status_t* status'
#define DEF_TOKEN_TYPE(Name, ...) DEF_TOKEN_TYPE_1(Name, BSON_CONCAT(Name, _t), __VA_ARGS__)
#define DEF_TOKEN_TYPE_1(Prefix, T, ...) \
/* Define the struct for the token */ \
struct T { \
_mongocrypt_buffer_t data; \
}; \
/* Data-getter */ \
const _mongocrypt_buffer_t *BSON_CONCAT(Prefix, _get)(const T *self) { return &self->data; } \
/* Destructor */ \
void BSON_CONCAT(Prefix, _destroy)(T * self) { \
if (!self) { \
return; \
} \
_mongocrypt_buffer_cleanup(&self->data); \
bson_free(self); \
} \
/* Constructor. Shallow copy from raw buffer */ \
T *BSON_CONCAT(Prefix, _new_from_buffer)(const _mongocrypt_buffer_t *buf) { \
BSON_ASSERT(buf->len == MONGOCRYPT_HMAC_SHA256_LEN); \
T *t = bson_malloc(sizeof(T)); \
_mongocrypt_buffer_set_to(buf, &t->data); \
return t; \
} \
/* Constructor. Deep copy from raw buffer */ \
T *BSON_CONCAT(Prefix, _new_from_buffer_copy)(const _mongocrypt_buffer_t *buf) { \
BSON_ASSERT(buf->len == MONGOCRYPT_HMAC_SHA256_LEN); \
T *t = bson_malloc(sizeof(T)); \
_mongocrypt_buffer_init(&t->data); \
_mongocrypt_buffer_copy_to(buf, &t->data); \
return t; \
} \
/* Constructor. Parameter list given as variadic args. */ \
T *BSON_CONCAT(Prefix, _new)(_mongocrypt_crypto_t * crypto, __VA_ARGS__, mongocrypt_status_t * status)
#define IMPL_TOKEN_NEW_1(Name, Key, Arg, Clean) \
{ \
BSON_CONCAT(Name, _t) *t = bson_malloc(sizeof(BSON_CONCAT(Name, _t))); \
_mongocrypt_buffer_init(&t->data); \
_mongocrypt_buffer_resize(&t->data, MONGOCRYPT_HMAC_SHA256_LEN); \
\
if (!_mongocrypt_hmac_sha_256(crypto, Key, Arg, &t->data, status)) { \
BSON_CONCAT(Name, _destroy)(t); \
Clean; \
return NULL; \
} \
Clean; \
return t; \
}
// Define the implementation of a token where Arg is a _mongocrypt_buffer_t.
#define IMPL_TOKEN_NEW(Name, Key, Arg) IMPL_TOKEN_NEW_1(Name, Key, Arg, (void)0)
// Define the implementation of a token where Arg is a uint64_t.
#define IMPL_TOKEN_NEW_CONST(Name, Key, Arg) \
{ \
_mongocrypt_buffer_t to_hash; \
_mongocrypt_buffer_copy_from_uint64_le(&to_hash, Arg); \
IMPL_TOKEN_NEW_1(Name, Key, &to_hash, _mongocrypt_buffer_cleanup(&to_hash)) \
}
DEF_TOKEN_TYPE(mc_CollectionsLevel1Token, const _mongocrypt_buffer_t *RootKey)
IMPL_TOKEN_NEW_CONST(mc_CollectionsLevel1Token, RootKey, 1)
DEF_TOKEN_TYPE(mc_EDCToken, const mc_CollectionsLevel1Token_t *CollectionsLevel1Token)
IMPL_TOKEN_NEW_CONST(mc_EDCToken, mc_CollectionsLevel1Token_get(CollectionsLevel1Token), 1)
DEF_TOKEN_TYPE(mc_ESCToken, const mc_CollectionsLevel1Token_t *CollectionsLevel1Token)
IMPL_TOKEN_NEW_CONST(mc_ESCToken, mc_CollectionsLevel1Token_get(CollectionsLevel1Token), 2)
DEF_TOKEN_TYPE(mc_ECCToken, const mc_CollectionsLevel1Token_t *CollectionsLevel1Token)
IMPL_TOKEN_NEW_CONST(mc_ECCToken, mc_CollectionsLevel1Token_get(CollectionsLevel1Token), 3)
DEF_TOKEN_TYPE(mc_ECOCToken, const mc_CollectionsLevel1Token_t *CollectionsLevel1Token)
IMPL_TOKEN_NEW_CONST(mc_ECOCToken, mc_CollectionsLevel1Token_get(CollectionsLevel1Token), 4)
DEF_TOKEN_TYPE(mc_EDCDerivedFromDataToken, const mc_EDCToken_t *EDCToken, const _mongocrypt_buffer_t *v)
IMPL_TOKEN_NEW(mc_EDCDerivedFromDataToken, mc_EDCToken_get(EDCToken), v)
DEF_TOKEN_TYPE(mc_ESCDerivedFromDataToken, const mc_ESCToken_t *ESCToken, const _mongocrypt_buffer_t *v)
IMPL_TOKEN_NEW(mc_ESCDerivedFromDataToken, mc_ESCToken_get(ESCToken), v)
DEF_TOKEN_TYPE(mc_ECCDerivedFromDataToken, const mc_ECCToken_t *ECCToken, const _mongocrypt_buffer_t *v)
IMPL_TOKEN_NEW(mc_ECCDerivedFromDataToken, mc_ECCToken_get(ECCToken), v)
DEF_TOKEN_TYPE(mc_EDCTwiceDerivedToken,
const mc_EDCDerivedFromDataTokenAndContentionFactor_t *EDCDerivedFromDataTokenAndContentionFactor)
IMPL_TOKEN_NEW_CONST(mc_EDCTwiceDerivedToken,
mc_EDCDerivedFromDataTokenAndContentionFactor_get(EDCDerivedFromDataTokenAndContentionFactor),
1)
DEF_TOKEN_TYPE(mc_ESCTwiceDerivedTagToken,
const mc_ESCDerivedFromDataTokenAndContentionFactor_t *ESCDerivedFromDataTokenAndContentionFactor)
IMPL_TOKEN_NEW_CONST(mc_ESCTwiceDerivedTagToken,
mc_ESCDerivedFromDataTokenAndContentionFactor_get(ESCDerivedFromDataTokenAndContentionFactor),
1)
DEF_TOKEN_TYPE(mc_ESCTwiceDerivedValueToken,
const mc_ESCDerivedFromDataTokenAndContentionFactor_t *ESCDerivedFromDataTokenAndContentionFactor)
IMPL_TOKEN_NEW_CONST(mc_ESCTwiceDerivedValueToken,
mc_ESCDerivedFromDataTokenAndContentionFactor_get(ESCDerivedFromDataTokenAndContentionFactor),
2)
DEF_TOKEN_TYPE(mc_ServerDataEncryptionLevel1Token, const _mongocrypt_buffer_t *RootKey)
IMPL_TOKEN_NEW_CONST(mc_ServerDataEncryptionLevel1Token, RootKey, 3)
DEF_TOKEN_TYPE(mc_EDCDerivedFromDataTokenAndContentionFactor,
const mc_EDCDerivedFromDataToken_t *EDCDerivedFromDataToken,
uint64_t u)
IMPL_TOKEN_NEW_CONST(mc_EDCDerivedFromDataTokenAndContentionFactor,
mc_EDCDerivedFromDataToken_get(EDCDerivedFromDataToken),
u)
DEF_TOKEN_TYPE(mc_ESCDerivedFromDataTokenAndContentionFactor,
const mc_ESCDerivedFromDataToken_t *ESCDerivedFromDataToken,
uint64_t u)
IMPL_TOKEN_NEW_CONST(mc_ESCDerivedFromDataTokenAndContentionFactor,
mc_ESCDerivedFromDataToken_get(ESCDerivedFromDataToken),
u)
DEF_TOKEN_TYPE(mc_ECCDerivedFromDataTokenAndContentionFactor,
const mc_ECCDerivedFromDataToken_t *ECCDerivedFromDataToken,
uint64_t u)
IMPL_TOKEN_NEW_CONST(mc_ECCDerivedFromDataTokenAndContentionFactor,
mc_ECCDerivedFromDataToken_get(ECCDerivedFromDataToken),
u)
/* FLE2v2 */
DEF_TOKEN_TYPE(mc_ServerTokenDerivationLevel1Token, const _mongocrypt_buffer_t *RootKey)
IMPL_TOKEN_NEW_CONST(mc_ServerTokenDerivationLevel1Token, RootKey, 2)
DEF_TOKEN_TYPE(mc_ServerDerivedFromDataToken,
const mc_ServerTokenDerivationLevel1Token_t *ServerTokenDerivationToken,
const _mongocrypt_buffer_t *v)
IMPL_TOKEN_NEW(mc_ServerDerivedFromDataToken, mc_ServerTokenDerivationLevel1Token_get(ServerTokenDerivationToken), v)
DEF_TOKEN_TYPE(mc_ServerCountAndContentionFactorEncryptionToken,
const mc_ServerDerivedFromDataToken_t *serverDerivedFromDataToken)
IMPL_TOKEN_NEW_CONST(mc_ServerCountAndContentionFactorEncryptionToken,
mc_ServerDerivedFromDataToken_get(serverDerivedFromDataToken),
1)
DEF_TOKEN_TYPE(mc_ServerZerosEncryptionToken, const mc_ServerDerivedFromDataToken_t *serverDerivedFromDataToken)
IMPL_TOKEN_NEW_CONST(mc_ServerZerosEncryptionToken, mc_ServerDerivedFromDataToken_get(serverDerivedFromDataToken), 2)
// d = 17 bytes of 0, AnchorPaddingTokenRoot = HMAC(ESCToken, d)
#define ANCHOR_PADDING_TOKEN_D_LENGTH 17
static const uint8_t mc_AnchorPaddingTokenDValue[ANCHOR_PADDING_TOKEN_D_LENGTH] =
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
DEF_TOKEN_TYPE(mc_AnchorPaddingTokenRoot, const mc_ESCToken_t *ESCToken) {
_mongocrypt_buffer_t to_hash;
if (!_mongocrypt_buffer_copy_from_data_and_size(&to_hash,
mc_AnchorPaddingTokenDValue,
ANCHOR_PADDING_TOKEN_D_LENGTH)) {
return NULL;
}
IMPL_TOKEN_NEW_1(mc_AnchorPaddingTokenRoot,
mc_ESCToken_get(ESCToken),
&to_hash,
_mongocrypt_buffer_cleanup(&to_hash))
}
#undef ANCHOR_PADDING_TOKEN_D_LENGTH
DEF_TOKEN_TYPE(mc_AnchorPaddingKeyToken, const mc_AnchorPaddingTokenRoot_t *anchorPaddingToken)
IMPL_TOKEN_NEW_CONST(mc_AnchorPaddingKeyToken, mc_AnchorPaddingTokenRoot_get(anchorPaddingToken), 1)
DEF_TOKEN_TYPE(mc_AnchorPaddingValueToken, const mc_AnchorPaddingTokenRoot_t *anchorPaddingToken)
IMPL_TOKEN_NEW_CONST(mc_AnchorPaddingValueToken, mc_AnchorPaddingTokenRoot_get(anchorPaddingToken), 2)
#define TEXT_EXACT_ID 1
#define TEXT_SUBSTRING_ID 2
#define TEXT_SUFFIX_ID 3
#define TEXT_PREFIX_ID 4
DEF_TOKEN_TYPE(mc_EDCTextExactToken, const mc_EDCToken_t *edcToken)
IMPL_TOKEN_NEW_CONST(mc_EDCTextExactToken, mc_EDCToken_get(edcToken), TEXT_EXACT_ID)
DEF_TOKEN_TYPE(mc_EDCTextSubstringToken, const mc_EDCToken_t *edcToken)
IMPL_TOKEN_NEW_CONST(mc_EDCTextSubstringToken, mc_EDCToken_get(edcToken), TEXT_SUBSTRING_ID)
DEF_TOKEN_TYPE(mc_EDCTextSuffixToken, const mc_EDCToken_t *edcToken)
IMPL_TOKEN_NEW_CONST(mc_EDCTextSuffixToken, mc_EDCToken_get(edcToken), TEXT_SUFFIX_ID)
DEF_TOKEN_TYPE(mc_EDCTextPrefixToken, const mc_EDCToken_t *edcToken)
IMPL_TOKEN_NEW_CONST(mc_EDCTextPrefixToken, mc_EDCToken_get(edcToken), TEXT_PREFIX_ID)
DEF_TOKEN_TYPE(mc_ESCTextExactToken, const mc_ESCToken_t *escToken)
IMPL_TOKEN_NEW_CONST(mc_ESCTextExactToken, mc_ESCToken_get(escToken), TEXT_EXACT_ID)
DEF_TOKEN_TYPE(mc_ESCTextSubstringToken, const mc_ESCToken_t *escToken)
IMPL_TOKEN_NEW_CONST(mc_ESCTextSubstringToken, mc_ESCToken_get(escToken), TEXT_SUBSTRING_ID)
DEF_TOKEN_TYPE(mc_ESCTextSuffixToken, const mc_ESCToken_t *escToken)
IMPL_TOKEN_NEW_CONST(mc_ESCTextSuffixToken, mc_ESCToken_get(escToken), TEXT_SUFFIX_ID)
DEF_TOKEN_TYPE(mc_ESCTextPrefixToken, const mc_ESCToken_t *escToken)
IMPL_TOKEN_NEW_CONST(mc_ESCTextPrefixToken, mc_ESCToken_get(escToken), TEXT_PREFIX_ID)
DEF_TOKEN_TYPE(mc_ServerTextExactToken, const mc_ServerTokenDerivationLevel1Token_t *serverTokenDerivationLevel1Token)
IMPL_TOKEN_NEW_CONST(mc_ServerTextExactToken,
mc_ServerTokenDerivationLevel1Token_get(serverTokenDerivationLevel1Token),
TEXT_EXACT_ID)
DEF_TOKEN_TYPE(mc_ServerTextSubstringToken,
const mc_ServerTokenDerivationLevel1Token_t *serverTokenDerivationLevel1Token)
IMPL_TOKEN_NEW_CONST(mc_ServerTextSubstringToken,
mc_ServerTokenDerivationLevel1Token_get(serverTokenDerivationLevel1Token),
TEXT_SUBSTRING_ID)
DEF_TOKEN_TYPE(mc_ServerTextSuffixToken, const mc_ServerTokenDerivationLevel1Token_t *serverTokenDerivationLevel1Token)
IMPL_TOKEN_NEW_CONST(mc_ServerTextSuffixToken,
mc_ServerTokenDerivationLevel1Token_get(serverTokenDerivationLevel1Token),
TEXT_SUFFIX_ID)
DEF_TOKEN_TYPE(mc_ServerTextPrefixToken, const mc_ServerTokenDerivationLevel1Token_t *serverTokenDerivationLevel1Token)
IMPL_TOKEN_NEW_CONST(mc_ServerTextPrefixToken,
mc_ServerTokenDerivationLevel1Token_get(serverTokenDerivationLevel1Token),
TEXT_PREFIX_ID)
DEF_TOKEN_TYPE(mc_EDCTextExactDerivedFromDataToken,
const mc_EDCTextExactToken_t *edcTextExactToken,
const _mongocrypt_buffer_t *v)
IMPL_TOKEN_NEW(mc_EDCTextExactDerivedFromDataToken, mc_EDCTextExactToken_get(edcTextExactToken), v)
DEF_TOKEN_TYPE(mc_EDCTextSubstringDerivedFromDataToken,
const mc_EDCTextSubstringToken_t *edcTextSubstringToken,
const _mongocrypt_buffer_t *v)
IMPL_TOKEN_NEW(mc_EDCTextSubstringDerivedFromDataToken, mc_EDCTextSubstringToken_get(edcTextSubstringToken), v)
DEF_TOKEN_TYPE(mc_EDCTextSuffixDerivedFromDataToken,
const mc_EDCTextSuffixToken_t *edcTextSuffixToken,
const _mongocrypt_buffer_t *v)
IMPL_TOKEN_NEW(mc_EDCTextSuffixDerivedFromDataToken, mc_EDCTextSuffixToken_get(edcTextSuffixToken), v)
DEF_TOKEN_TYPE(mc_EDCTextPrefixDerivedFromDataToken,
const mc_EDCTextPrefixToken_t *edcTextPrefixToken,
const _mongocrypt_buffer_t *v)
IMPL_TOKEN_NEW(mc_EDCTextPrefixDerivedFromDataToken, mc_EDCTextPrefixToken_get(edcTextPrefixToken), v)
DEF_TOKEN_TYPE(mc_EDCTextExactDerivedFromDataTokenAndContentionFactorToken,
const mc_EDCTextExactDerivedFromDataToken_t *edcTextExactToken,
uint64_t u)
IMPL_TOKEN_NEW_CONST(mc_EDCTextExactDerivedFromDataTokenAndContentionFactorToken,
mc_EDCTextExactDerivedFromDataToken_get(edcTextExactToken),
u)
DEF_TOKEN_TYPE(mc_EDCTextSubstringDerivedFromDataTokenAndContentionFactorToken,
const mc_EDCTextSubstringDerivedFromDataToken_t *edcTextSubstringToken,
uint64_t u)
IMPL_TOKEN_NEW_CONST(mc_EDCTextSubstringDerivedFromDataTokenAndContentionFactorToken,
mc_EDCTextSubstringDerivedFromDataToken_get(edcTextSubstringToken),
u)
DEF_TOKEN_TYPE(mc_EDCTextSuffixDerivedFromDataTokenAndContentionFactorToken,
const mc_EDCTextSuffixDerivedFromDataToken_t *edcTextSuffixToken,
uint64_t u)
IMPL_TOKEN_NEW_CONST(mc_EDCTextSuffixDerivedFromDataTokenAndContentionFactorToken,
mc_EDCTextSuffixDerivedFromDataToken_get(edcTextSuffixToken),
u)
DEF_TOKEN_TYPE(mc_EDCTextPrefixDerivedFromDataTokenAndContentionFactorToken,
const mc_EDCTextPrefixDerivedFromDataToken_t *edcTextPrefixToken,
uint64_t u)
IMPL_TOKEN_NEW_CONST(mc_EDCTextPrefixDerivedFromDataTokenAndContentionFactorToken,
mc_EDCTextPrefixDerivedFromDataToken_get(edcTextPrefixToken),
u)
DEF_TOKEN_TYPE(mc_ESCTextExactDerivedFromDataToken,
const mc_ESCTextExactToken_t *escTextExactToken,
const _mongocrypt_buffer_t *v)
IMPL_TOKEN_NEW(mc_ESCTextExactDerivedFromDataToken, mc_ESCTextExactToken_get(escTextExactToken), v)
DEF_TOKEN_TYPE(mc_ESCTextSubstringDerivedFromDataToken,
const mc_ESCTextSubstringToken_t *escTextSubstringToken,
const _mongocrypt_buffer_t *v)
IMPL_TOKEN_NEW(mc_ESCTextSubstringDerivedFromDataToken, mc_ESCTextSubstringToken_get(escTextSubstringToken), v)
DEF_TOKEN_TYPE(mc_ESCTextSuffixDerivedFromDataToken,
const mc_ESCTextSuffixToken_t *escTextSuffixToken,
const _mongocrypt_buffer_t *v)
IMPL_TOKEN_NEW(mc_ESCTextSuffixDerivedFromDataToken, mc_ESCTextSuffixToken_get(escTextSuffixToken), v)
DEF_TOKEN_TYPE(mc_ESCTextPrefixDerivedFromDataToken,
const mc_ESCTextPrefixToken_t *escTextPrefixToken,
const _mongocrypt_buffer_t *v)
IMPL_TOKEN_NEW(mc_ESCTextPrefixDerivedFromDataToken, mc_ESCTextPrefixToken_get(escTextPrefixToken), v)
DEF_TOKEN_TYPE(mc_ESCTextExactDerivedFromDataTokenAndContentionFactorToken,
const mc_ESCTextExactDerivedFromDataToken_t *escTextExactToken,
uint64_t u)
IMPL_TOKEN_NEW_CONST(mc_ESCTextExactDerivedFromDataTokenAndContentionFactorToken,
mc_ESCTextExactDerivedFromDataToken_get(escTextExactToken),
u)
DEF_TOKEN_TYPE(mc_ESCTextSubstringDerivedFromDataTokenAndContentionFactorToken,
const mc_ESCTextSubstringDerivedFromDataToken_t *escTextSubstringToken,
uint64_t u)
IMPL_TOKEN_NEW_CONST(mc_ESCTextSubstringDerivedFromDataTokenAndContentionFactorToken,
mc_ESCTextSubstringDerivedFromDataToken_get(escTextSubstringToken),
u)
DEF_TOKEN_TYPE(mc_ESCTextSuffixDerivedFromDataTokenAndContentionFactorToken,
const mc_ESCTextSuffixDerivedFromDataToken_t *escTextSuffixToken,
uint64_t u)
IMPL_TOKEN_NEW_CONST(mc_ESCTextSuffixDerivedFromDataTokenAndContentionFactorToken,
mc_ESCTextSuffixDerivedFromDataToken_get(escTextSuffixToken),
u)
DEF_TOKEN_TYPE(mc_ESCTextPrefixDerivedFromDataTokenAndContentionFactorToken,
const mc_ESCTextPrefixDerivedFromDataToken_t *escTextPrefixToken,
uint64_t u)
IMPL_TOKEN_NEW_CONST(mc_ESCTextPrefixDerivedFromDataTokenAndContentionFactorToken,
mc_ESCTextPrefixDerivedFromDataToken_get(escTextPrefixToken),
u)
DEF_TOKEN_TYPE(mc_ServerTextExactDerivedFromDataToken,
const mc_ServerTextExactToken_t *serverTextExactToken,
const _mongocrypt_buffer_t *v)
IMPL_TOKEN_NEW(mc_ServerTextExactDerivedFromDataToken, mc_ServerTextExactToken_get(serverTextExactToken), v)
DEF_TOKEN_TYPE(mc_ServerTextSubstringDerivedFromDataToken,
const mc_ServerTextSubstringToken_t *serverTextSubstringToken,
const _mongocrypt_buffer_t *v)
IMPL_TOKEN_NEW(mc_ServerTextSubstringDerivedFromDataToken, mc_ServerTextSubstringToken_get(serverTextSubstringToken), v)
DEF_TOKEN_TYPE(mc_ServerTextSuffixDerivedFromDataToken,
const mc_ServerTextSuffixToken_t *serverTextSuffixToken,
const _mongocrypt_buffer_t *v)
IMPL_TOKEN_NEW(mc_ServerTextSuffixDerivedFromDataToken, mc_ServerTextSuffixToken_get(serverTextSuffixToken), v)
DEF_TOKEN_TYPE(mc_ServerTextPrefixDerivedFromDataToken,
const mc_ServerTextPrefixToken_t *serverTextPrefixToken,
const _mongocrypt_buffer_t *v)
IMPL_TOKEN_NEW(mc_ServerTextPrefixDerivedFromDataToken, mc_ServerTextPrefixToken_get(serverTextPrefixToken), v)
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