blake2_prov.c
/*
* Copyright 2019-2023 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
*/
#include <openssl/crypto.h>
#include <openssl/core_names.h>
#include <openssl/proverr.h>
#include <openssl/err.h>
#include "prov/blake2.h"
#include "prov/digestcommon.h"
#include "prov/implementations.h"
#define IMPLEMENT_BLAKE_functions(variant, VARIANT, variantsize) \
static const OSSL_PARAM known_blake##variant##_ctx_params[] = { \
{OSSL_DIGEST_PARAM_SIZE, OSSL_PARAM_UNSIGNED_INTEGER, NULL, 0, 0}, \
OSSL_PARAM_END \
}; \
\
const OSSL_PARAM *ossl_blake##variant##_gettable_ctx_params(ossl_unused void *ctx, \
ossl_unused void *pctx) \
{ \
return known_blake##variant##_ctx_params; \
} \
\
const OSSL_PARAM *ossl_blake##variant##_settable_ctx_params(ossl_unused void *ctx, \
ossl_unused void *pctx) \
{ \
return known_blake##variant##_ctx_params; \
} \
\
int ossl_blake##variant##_get_ctx_params(void *vctx, OSSL_PARAM params[]) \
{ \
struct blake##variant##_md_data_st *mdctx = vctx; \
OSSL_PARAM *p; \
\
BLAKE##VARIANT##_CTX *ctx = &mdctx->ctx; \
\
if (ctx == NULL) \
return 0; \
if (params == NULL) \
return 1; \
\
p = OSSL_PARAM_locate(params, OSSL_DIGEST_PARAM_SIZE); \
if (p != NULL \
&& !OSSL_PARAM_set_uint(p, (unsigned int)mdctx->params.digest_length)) { \
ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER); \
return 0; \
} \
\
return 1; \
} \
\
int ossl_blake##variant##_set_ctx_params(void *vctx, const OSSL_PARAM params[]) \
{ \
size_t size; \
struct blake##variant##_md_data_st *mdctx = vctx; \
const OSSL_PARAM *p; \
\
BLAKE##VARIANT##_CTX *ctx = &mdctx->ctx; \
\
if (ctx == NULL) \
return 0; \
if (params == NULL) \
return 1; \
\
p = OSSL_PARAM_locate_const(params, OSSL_DIGEST_PARAM_SIZE); \
if (p != NULL) { \
if (!OSSL_PARAM_get_size_t(p, &size)) { \
ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER); \
return 0; \
} \
if (size < 1 || size > BLAKE##VARIANT##_OUTBYTES) { \
ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_DIGEST_SIZE); \
return 0; \
} \
ossl_blake##variant##_param_set_digest_length(&mdctx->params, (uint8_t)size); \
} \
\
return 1; \
} \
\
static int ossl_blake##variantsize##_init(void *ctx) \
{ \
struct blake##variant##_md_data_st *mdctx = ctx; \
uint8_t digest_length = mdctx->params.digest_length; \
\
ossl_blake##variant##_param_init(&mdctx->params); \
if (digest_length != 0) \
mdctx->params.digest_length = digest_length; \
return ossl_blake##variant##_init(&mdctx->ctx, &mdctx->params); \
} \
\
static OSSL_FUNC_digest_init_fn blake##variantsize##_internal_init; \
static OSSL_FUNC_digest_newctx_fn blake##variantsize##_newctx; \
static OSSL_FUNC_digest_freectx_fn blake##variantsize##_freectx; \
static OSSL_FUNC_digest_dupctx_fn blake##variantsize##_dupctx; \
static OSSL_FUNC_digest_final_fn blake##variantsize##_internal_final; \
static OSSL_FUNC_digest_get_params_fn blake##variantsize##_get_params; \
\
static int blake##variantsize##_internal_init(void *ctx, const OSSL_PARAM params[]) \
{ \
return ossl_prov_is_running() && ossl_blake##variant##_set_ctx_params(ctx, params) \
&& ossl_blake##variantsize##_init(ctx); \
} \
\
static void *blake##variantsize##_newctx(void *prov_ctx) \
{ \
struct blake##variant##_md_data_st *ctx; \
\
ctx = ossl_prov_is_running() ? OPENSSL_zalloc(sizeof(*ctx)) : NULL; \
return ctx; \
} \
\
static void blake##variantsize##_freectx(void *vctx) \
{ \
struct blake##variant##_md_data_st *ctx; \
\
ctx = (struct blake##variant##_md_data_st *)vctx; \
OPENSSL_clear_free(ctx, sizeof(*ctx)); \
} \
\
static void *blake##variantsize##_dupctx(void *ctx) \
{ \
struct blake##variant##_md_data_st *in, *ret; \
\
in = (struct blake##variant##_md_data_st *)ctx; \
ret = ossl_prov_is_running()? OPENSSL_malloc(sizeof(*ret)) : NULL; \
if (ret != NULL) \
*ret = *in; \
return ret; \
} \
\
static int blake##variantsize##_internal_final(void *ctx, unsigned char *out, \
size_t *outl, size_t outsz) \
{ \
struct blake##variant##_md_data_st *b_ctx; \
\
b_ctx = (struct blake##variant##_md_data_st *)ctx; \
\
if (!ossl_prov_is_running()) \
return 0; \
\
*outl = b_ctx->ctx.outlen; \
\
if (outsz == 0) \
return 1; \
\
if (outsz < *outl) { \
ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_DIGEST_SIZE); \
return 0; \
} \
\
return ossl_blake##variant##_final(out, ctx); \
} \
\
static int blake##variantsize##_get_params(OSSL_PARAM params[]) \
{ \
return ossl_digest_default_get_params(params, BLAKE##VARIANT##_BLOCKBYTES, BLAKE##VARIANT##_OUTBYTES, 0); \
} \
\
const OSSL_DISPATCH ossl_blake##variantsize##_functions[] = { \
{OSSL_FUNC_DIGEST_NEWCTX, (void (*)(void))blake##variantsize##_newctx}, \
{OSSL_FUNC_DIGEST_UPDATE, (void (*)(void))ossl_blake##variant##_update}, \
{OSSL_FUNC_DIGEST_FINAL, (void (*)(void))blake##variantsize##_internal_final}, \
{OSSL_FUNC_DIGEST_FREECTX, (void (*)(void))blake##variantsize##_freectx}, \
{OSSL_FUNC_DIGEST_DUPCTX, (void (*)(void))blake##variantsize##_dupctx}, \
{OSSL_FUNC_DIGEST_GET_PARAMS, (void (*)(void))blake##variantsize##_get_params}, \
{OSSL_FUNC_DIGEST_GETTABLE_PARAMS, \
(void (*)(void))ossl_digest_default_gettable_params}, \
{OSSL_FUNC_DIGEST_INIT, (void (*)(void))blake##variantsize##_internal_init}, \
{OSSL_FUNC_DIGEST_GETTABLE_CTX_PARAMS, \
(void (*)(void))ossl_blake##variant##_gettable_ctx_params}, \
{OSSL_FUNC_DIGEST_SETTABLE_CTX_PARAMS, \
(void (*)(void))ossl_blake##variant##_settable_ctx_params}, \
{OSSL_FUNC_DIGEST_GET_CTX_PARAMS, \
(void (*)(void))ossl_blake##variant##_get_ctx_params}, \
{OSSL_FUNC_DIGEST_SET_CTX_PARAMS, \
(void (*)(void))ossl_blake##variant##_set_ctx_params}, \
{0, NULL} \
};
IMPLEMENT_BLAKE_functions(2s, 2S, 2s256)
IMPLEMENT_BLAKE_functions(2b, 2B, 2b512)
