providers/implementations/digests/blake2_prov.c

   1 /*
   2  * Copyright 2019-2023 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <openssl/crypto.h>
  11 #include "prov/blake2.h"
  12 #include "prov/digestcommon.h"
  13 #include "prov/implementations.h"
  14
  15 int ossl_blake2s256_init(void *ctx)
  16 {
  17     BLAKE2S_PARAM P;
  18
  19     ossl_blake2s_param_init(&P);
  20     return ossl_blake2s_init((BLAKE2S_CTX *)ctx, &P);
  21 }
  22
  23 int ossl_blake2b512_init(void *ctx)
  24 {
  25     struct blake2b_md_data_st *mdctx = ctx;
  26
  27     ossl_blake2b_param_init(&mdctx->params);
  28     return ossl_blake2b_init(&mdctx->ctx, &mdctx->params);
  29 }
  30
  31 /* ossl_blake2s256_functions */
  32 IMPLEMENT_digest_functions(blake2s256, BLAKE2S_CTX,
  33                            BLAKE2S_BLOCKBYTES, BLAKE2S_DIGEST_LENGTH, 0,
  34                            ossl_blake2s256_init, ossl_blake2s_update,
  35                            ossl_blake2s_final)
  36
  37 /* ossl_blake2b512_functions */
  38
  39 static OSSL_FUNC_digest_init_fn blake2b512_internal_init;
  40 static OSSL_FUNC_digest_newctx_fn blake2b512_newctx;
  41 static OSSL_FUNC_digest_freectx_fn blake2b512_freectx;
  42 static OSSL_FUNC_digest_dupctx_fn blake2b512_dupctx;
  43 static OSSL_FUNC_digest_final_fn blake2b512_internal_final;
  44 static OSSL_FUNC_digest_get_params_fn blake2b512_get_params;
  45
  46 static int blake2b512_internal_init(void *ctx, const OSSL_PARAM params[])
  47 {
  48     return ossl_prov_is_running() && ossl_blake2b_set_ctx_params(ctx, params)
  49         && ossl_blake2b512_init(ctx);
  50 }
  51
  52 static void *blake2b512_newctx(void *prov_ctx)
  53 {
  54     struct blake2b_md_data_st *ctx;
  55
  56     ctx = ossl_prov_is_running() ? OPENSSL_zalloc(sizeof(*ctx)) : NULL;
  57     return ctx;
  58 }
  59
  60 static void blake2b512_freectx(void *vctx)
  61 {
  62     struct blake2b_md_data_st *ctx;
  63
  64     ctx = (struct blake2b_md_data_st *)vctx;
  65     OPENSSL_clear_free(ctx, sizeof(*ctx));
  66 }
  67
  68 static void *blake2b512_dupctx(void *ctx)
  69 {
  70     struct blake2b_md_data_st *in, *ret;
  71
  72     in = (struct blake2b_md_data_st *)ctx;
  73     ret = ossl_prov_is_running()? OPENSSL_malloc(sizeof(*ret)) : NULL;
  74     if (ret != NULL)
  75         *ret = *in;
  76     return ret;
  77 }
  78
  79 static int blake2b512_internal_final(void *ctx, unsigned char *out,
  80                                      size_t *outl, size_t outsz)
  81 {
  82     struct blake2b_md_data_st *b_ctx;
  83
  84     b_ctx = (struct blake2b_md_data_st *)ctx;
  85     *outl = b_ctx->ctx.outlen;
  86
  87     if (!ossl_prov_is_running())
  88         return 0;
  89
  90     return (outsz > 0) ? ossl_blake2b_final(out, ctx) : 1;
  91 }
  92
  93 static int blake2b512_get_params(OSSL_PARAM params[])
  94 {
  95     return ossl_digest_default_get_params(params, BLAKE2B_BLOCKBYTES, 64, 0);
  96 }
  97
  98 const OSSL_DISPATCH ossl_blake2b512_functions[] =
  99     { {OSSL_FUNC_DIGEST_NEWCTX, (void (*)(void))blake2b512_newctx},
 100     {OSSL_FUNC_DIGEST_UPDATE, (void (*)(void))ossl_blake2b_update},
 101     {OSSL_FUNC_DIGEST_FINAL, (void (*)(void))blake2b512_internal_final},
 102     {OSSL_FUNC_DIGEST_FREECTX, (void (*)(void))blake2b512_freectx},
 103     {OSSL_FUNC_DIGEST_DUPCTX, (void (*)(void))blake2b512_dupctx},
 104     {OSSL_FUNC_DIGEST_GET_PARAMS, (void (*)(void))blake2b512_get_params},
 105     {OSSL_FUNC_DIGEST_GETTABLE_PARAMS,
 106      (void (*)(void))ossl_digest_default_gettable_params},
 107     {OSSL_FUNC_DIGEST_INIT, (void (*)(void))blake2b512_internal_init},
 108     {OSSL_FUNC_DIGEST_SETTABLE_CTX_PARAMS,
 109      (void (*)(void))ossl_blake2b_settable_ctx_params},
 110     {OSSL_FUNC_DIGEST_SET_CTX_PARAMS,
 111      (void (*)(void))ossl_blake2b_set_ctx_params}, {0, NULL} };
 112