mirror of https://github.com/openssl/openssl.git
131 lines
5.8 KiB
C
131 lines
5.8 KiB
C
/*
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* Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#ifndef OSSL_CORE_MKDIGEST_H
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# define OSSL_CORE_MKDIGEST_H
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# include <openssl/core_numbers.h>
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# include <openssl/core_names.h>
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# include <openssl/params.h>
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# ifdef __cplusplus
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extern "C" {
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# endif
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# define OSSL_FUNC_DIGEST_ALLOC_METHODS(name, CTX_NAME) \
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static OSSL_OP_digest_newctx_fn name##_newctx; \
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static OSSL_OP_digest_freectx_fn name##_freectx; \
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static OSSL_OP_digest_dupctx_fn name##_dupctx; \
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static void *name##_newctx(void *prov_ctx) \
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{ \
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CTX_NAME *ctx = OPENSSL_zalloc(sizeof(*ctx)); \
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return ctx; \
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} \
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static void name##_freectx(void *vctx) \
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{ \
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CTX_NAME *ctx = (CTX_NAME *)vctx; \
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OPENSSL_clear_free(ctx, sizeof(*ctx)); \
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} \
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static void *name##_dupctx(void *ctx) \
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{ \
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CTX_NAME *in = (CTX_NAME *)ctx; \
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CTX_NAME *ret = OPENSSL_malloc(sizeof(*ret)); \
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*ret = *in; \
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return ret; \
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}
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# define OSSL_FUNC_DIGEST_GET_PARAM(name, blksize, dgstsize, flags) \
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static OSSL_OP_digest_get_params_fn name##_get_params; \
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static OSSL_OP_digest_gettable_params_fn name##_gettable_params; \
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static const OSSL_PARAM known_##name##_gettable_params[] = { \
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{OSSL_DIGEST_PARAM_BLOCK_SIZE, OSSL_PARAM_INTEGER, \
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NULL, sizeof(int), 0}, \
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{OSSL_DIGEST_PARAM_SIZE, OSSL_PARAM_INTEGER, NULL, sizeof(int), 0}, \
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{OSSL_DIGEST_PARAM_FLAGS, OSSL_PARAM_INTEGER, \
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NULL, sizeof(unsigned long), 0}, \
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OSSL_PARAM_END \
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}; \
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static const OSSL_PARAM *name##_gettable_params(void) \
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{ \
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return known_##name##_gettable_params; \
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} \
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static int name##_get_params(OSSL_PARAM params[]) \
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{ \
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OSSL_PARAM *p = NULL; \
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\
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p = OSSL_PARAM_locate(params, OSSL_DIGEST_PARAM_BLOCK_SIZE); \
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if (p != NULL && !OSSL_PARAM_set_int(p, (blksize))) \
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return 0; \
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p = OSSL_PARAM_locate(params, OSSL_DIGEST_PARAM_SIZE); \
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if (p != NULL && !OSSL_PARAM_set_int(p, (dgstsize))) \
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return 0; \
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p = OSSL_PARAM_locate(params, OSSL_DIGEST_PARAM_FLAGS); \
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if (p != NULL && !OSSL_PARAM_set_ulong(p, (flags))) \
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return 0; \
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return 1; \
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}
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# define OSSL_FUNC_DIGEST_SET_FINAL(name, dgstsize, fin) \
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static OSSL_OP_digest_final_fn name##_wrapfinal; \
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static int name##_wrapfinal(void *ctx, unsigned char *out, size_t *outl, size_t outsz) \
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{ \
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if (outsz >= dgstsize && fin(out, ctx)) { \
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*outl = dgstsize; \
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return 1; \
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} \
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return 0; \
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}
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# define OSSL_FUNC_DIGEST_COMMON(name, init, upd) \
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const OSSL_DISPATCH name##_functions[] = { \
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{ OSSL_FUNC_DIGEST_NEWCTX, (void (*)(void))name##_newctx }, \
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{ OSSL_FUNC_DIGEST_INIT, (void (*)(void))init }, \
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{ OSSL_FUNC_DIGEST_UPDATE, (void (*)(void))upd }, \
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{ OSSL_FUNC_DIGEST_FINAL, (void (*)(void))name##_wrapfinal }, \
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{ OSSL_FUNC_DIGEST_FREECTX, (void (*)(void))name##_freectx }, \
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{ OSSL_FUNC_DIGEST_DUPCTX, (void (*)(void))name##_dupctx }, \
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{ OSSL_FUNC_DIGEST_GET_PARAMS, (void (*)(void))name##_get_params }, \
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{ OSSL_FUNC_DIGEST_GETTABLE_PARAMS, \
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(void (*)(void))name##_gettable_params },
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# define OSSL_FUNC_DIGEST_CONSTRUCT_END \
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{ 0, NULL } \
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};
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# define OSSL_FUNC_DIGEST_CONSTRUCT_START(name, CTX, \
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blksize, dgstsize, flags, \
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init, upd, fin) \
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OSSL_FUNC_DIGEST_ALLOC_METHODS(name, CTX) \
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OSSL_FUNC_DIGEST_SET_FINAL(name, dgstsize, fin) \
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OSSL_FUNC_DIGEST_GET_PARAM(name, blksize, dgstsize, flags) \
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OSSL_FUNC_DIGEST_COMMON(name, init, upd)
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# define OSSL_FUNC_DIGEST_CONSTRUCT(name, CTX, blksize, dgstsize, flags, \
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init, upd, fin) \
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OSSL_FUNC_DIGEST_CONSTRUCT_START(name, CTX, blksize, dgstsize, flags, \
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init, upd, fin) \
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OSSL_FUNC_DIGEST_CONSTRUCT_END
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# define OSSL_FUNC_DIGEST_CONSTRUCT_PARAMS(name, CTX, \
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blksize, dgstsize, flags, \
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init, upd, fin, \
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setparamtypes, setparams) \
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OSSL_FUNC_DIGEST_CONSTRUCT_START(name, CTX, blksize, dgstsize, flags, \
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init, upd, fin) \
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{ OSSL_FUNC_DIGEST_SETTABLE_CTX_PARAMS, \
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(void (*)(void))setparamtypes }, \
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{ OSSL_FUNC_DIGEST_SET_CTX_PARAMS, (void (*)(void))setparams }, \
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OSSL_FUNC_DIGEST_CONSTRUCT_END
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# ifdef __cplusplus
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}
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# endif
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#endif /* OSSL_CORE_MKDIGEST_H */
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