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/*
* Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#ifndef OSSL_PROVIDERS_DIGESTCOMMON_H
#define OSSL_PROVIDERS_DIGESTCOMMON_H
#include <openssl/core_dispatch.h>
#include <openssl/core_names.h>
#include <openssl/params.h>
#include "prov/providercommon.h"
/* Internal flags that can be queried */
#define PROV_DIGEST_FLAG_XOF 0x0001
#define PROV_DIGEST_FLAG_ALGID_ABSENT 0x0002
#ifdef __cplusplus
extern "C" {
#endif
#define PROV_FUNC_DIGEST_GET_PARAM(name, blksize, dgstsize, flags) \
static OSSL_FUNC_digest_get_params_fn name##_get_params; \
static int name##_get_params(OSSL_PARAM params[]) \
{ \
return ossl_digest_default_get_params(params, blksize, dgstsize, flags); \
}
#define PROV_DISPATCH_FUNC_DIGEST_GET_PARAMS(name) \
{ OSSL_FUNC_DIGEST_GET_PARAMS, (void (*)(void))name##_get_params }, \
{ \
OSSL_FUNC_DIGEST_GETTABLE_PARAMS, \
(void (*)(void))ossl_digest_default_gettable_params \
}
#define PROV_FUNC_DIGEST_FINAL(name, dgstsize, fin) \
static OSSL_FUNC_digest_final_fn name##_internal_final; \
static int name##_internal_final(void *ctx, unsigned char *out, size_t *outl, \
size_t outsz) \
{ \
if (ossl_prov_is_running() && outsz >= dgstsize && fin(out, ctx)) { \
*outl = dgstsize; \
return 1; \
} \
return 0; \
}
#define PROV_DISPATCH_FUNC_DIGEST_CONSTRUCT_START( \
name, CTX, blksize, dgstsize, flags, upd, fin) \
static OSSL_FUNC_digest_newctx_fn name##_newctx; \
static OSSL_FUNC_digest_freectx_fn name##_freectx; \
static OSSL_FUNC_digest_dupctx_fn name##_dupctx; \
static void *name##_newctx(void *prov_ctx) \
{ \
CTX *ctx = ossl_prov_is_running() ? OPENSSL_zalloc(sizeof(*ctx)) : NULL; \
return ctx; \
} \
static void name##_freectx(void *vctx) \
{ \
CTX *ctx = (CTX *)vctx; \
OPENSSL_clear_free(ctx, sizeof(*ctx)); \
} \
static void *name##_dupctx(void *ctx) \
{ \
CTX *in = (CTX *)ctx; \
CTX *ret = ossl_prov_is_running() ? OPENSSL_malloc(sizeof(*ret)) : NULL; \
if (ret != NULL) \
*ret = *in; \
return ret; \
} \
static void name##_copyctx(void *voutctx, void *vinctx) \
{ \
CTX *outctx = (CTX *)voutctx; \
CTX *inctx = (CTX *)vinctx; \
*outctx = *inctx; \
} \
PROV_FUNC_DIGEST_FINAL(name, dgstsize, fin) \
PROV_FUNC_DIGEST_GET_PARAM(name, blksize, dgstsize, flags) \
const OSSL_DISPATCH ossl_##name##_functions[] = { \
{ OSSL_FUNC_DIGEST_NEWCTX, (void (*)(void))name##_newctx }, \
{ OSSL_FUNC_DIGEST_UPDATE, (void (*)(void))upd }, \
{ OSSL_FUNC_DIGEST_FINAL, (void (*)(void))name##_internal_final }, \
{ OSSL_FUNC_DIGEST_FREECTX, (void (*)(void))name##_freectx }, \
{ OSSL_FUNC_DIGEST_DUPCTX, (void (*)(void))name##_dupctx }, \
{ OSSL_FUNC_DIGEST_COPYCTX, (void (*)(void))name##_copyctx }, \
PROV_DISPATCH_FUNC_DIGEST_GET_PARAMS(name)
#define PROV_DISPATCH_FUNC_DIGEST_CONSTRUCT_END \
{ \
0, NULL \
} \
} \
;
#define IMPLEMENT_digest_functions( \
name, CTX, blksize, dgstsize, flags, init, upd, fin) \
static OSSL_FUNC_digest_init_fn name##_internal_init; \
static int name##_internal_init(void *ctx, \
ossl_unused const OSSL_PARAM params[]) \
{ \
return ossl_prov_is_running() && init(ctx); \
} \
PROV_DISPATCH_FUNC_DIGEST_CONSTRUCT_START(name, CTX, blksize, dgstsize, flags, \
upd, fin), \
{ OSSL_FUNC_DIGEST_INIT, (void (*)(void))name##_internal_init }, \
PROV_DISPATCH_FUNC_DIGEST_CONSTRUCT_END
#define IMPLEMENT_digest_functions_with_settable_ctx( \
name, CTX, blksize, dgstsize, flags, init, upd, fin, \
settable_ctx_params, set_ctx_params) \
static OSSL_FUNC_digest_init_fn name##_internal_init; \
static int name##_internal_init(void *ctx, const OSSL_PARAM params[]) \
{ \
return ossl_prov_is_running() \
&& init(ctx) \
&& set_ctx_params(ctx, params); \
} \
PROV_DISPATCH_FUNC_DIGEST_CONSTRUCT_START(name, CTX, blksize, dgstsize, flags, \
upd, fin), \
{ OSSL_FUNC_DIGEST_INIT, (void (*)(void))name##_internal_init }, \
{ OSSL_FUNC_DIGEST_SETTABLE_CTX_PARAMS, (void (*)(void))settable_ctx_params }, \
{ OSSL_FUNC_DIGEST_SET_CTX_PARAMS, (void (*)(void))set_ctx_params }, \
PROV_DISPATCH_FUNC_DIGEST_CONSTRUCT_END
const OSSL_PARAM *ossl_digest_default_gettable_params(void *provctx);
int ossl_digest_default_get_params(OSSL_PARAM params[], size_t blksz,
size_t paramsz, unsigned long flags);
#ifdef __cplusplus
}
#endif
#endif /* OSSL_PROVIDERS_DIGESTCOMMON_H */
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