crypto/blake2/m_blake2b.c

   1 /*
   2  * Copyright 2012, Samuel Neves <sneves@dei.uc.pt>.
   3  * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
   4  *
   5  * Licensed under the OpenSSL licenses, (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  * https://www.openssl.org/source/license.html
   9  * or in the file LICENSE in the source distribution.
  10  */
  11
  12 /*
  13  * Derived from the BLAKE2 reference implementation written by Samuel Neves.
  14  * More information about the BLAKE2 hash function and its implementations
  15  * can be found at https://blake2.net.
  16  */
  17
  18 #include "internal/cryptlib.h"
  19
  20 #ifndef OPENSSL_NO_BLAKE2
  21
  22 # include <openssl/evp.h>
  23 # include <openssl/objects.h>
  24 # include "internal/blake2_locl.h"
  25 # include "internal/evp_int.h"
  26
  27 static int init(EVP_MD_CTX *ctx)
  28 {
  29     return BLAKE2b_Init(EVP_MD_CTX_md_data(ctx));
  30 }
  31
  32 static int update(EVP_MD_CTX *ctx, const void *data, size_t count)
  33 {
  34     return BLAKE2b_Update(EVP_MD_CTX_md_data(ctx), data, count);
  35 }
  36
  37 static int final(EVP_MD_CTX *ctx, unsigned char *md)
  38 {
  39     return BLAKE2b_Final(md, EVP_MD_CTX_md_data(ctx));
  40 }
  41
  42 static const EVP_MD blake2b_md = {
  43     NID_blake2b512,
  44     0,
  45     BLAKE2B_DIGEST_LENGTH,
  46     0,
  47     init,
  48     update,
  49     final,
  50     NULL,
  51     NULL,
  52     0,
  53     sizeof(EVP_MD *) + sizeof(BLAKE2B_CTX),
  54 };
  55
  56 const EVP_MD *EVP_blake2b512(void)
  57 {
  58     return (&blake2b_md);
  59 }
  60 #endif