nss/lib/freebl/rawhash.c

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifdef FREEBL_NO_DEPEND
#include "stubs.h"
#endif

#include "nspr.h"
#include "hasht.h"
#include "blapi.h"	/* below the line */
#include "secerr.h"

static void *
null_hash_new_context(void)
{
    return NULL;
}

static void *
null_hash_clone_context(void *v)
{
    PORT_Assert(v == NULL);
    return NULL;
}

static void
null_hash_begin(void *v)
{
}

static void
null_hash_update(void *v, const unsigned char *input, unsigned int length)
{
}

static void
null_hash_end(void *v, unsigned char *output, unsigned int *outLen,
	      unsigned int maxOut)
{
    *outLen = 0;
}

static void
null_hash_destroy_context(void *v, PRBool b)
{
    PORT_Assert(v == NULL);
}


const SECHashObject SECRawHashObjects[] = {
  { 0,
    (void * (*)(void)) null_hash_new_context,
    (void * (*)(void *)) null_hash_clone_context,
    (void (*)(void *, PRBool)) null_hash_destroy_context,
    (void (*)(void *)) null_hash_begin,
    (void (*)(void *, const unsigned char *, unsigned int)) null_hash_update,
    (void (*)(void *, unsigned char *, unsigned int *,
	      unsigned int)) null_hash_end,
    0,
    HASH_AlgNULL,
    (void (*)(void *, unsigned char *, unsigned int *,
	      unsigned int)) null_hash_end
  },
  { MD2_LENGTH,
    (void * (*)(void)) MD2_NewContext,
    (void * (*)(void *)) null_hash_clone_context,
    (void (*)(void *, PRBool)) MD2_DestroyContext,
    (void (*)(void *)) MD2_Begin,
    (void (*)(void *, const unsigned char *, unsigned int)) MD2_Update,
    (void (*)(void *, unsigned char *, unsigned int *, unsigned int)) MD2_End,
    MD2_BLOCK_LENGTH,
    HASH_AlgMD2,
    NULL /* end_raw */
  },
  { MD5_LENGTH,
    (void * (*)(void)) MD5_NewContext,
    (void * (*)(void *)) null_hash_clone_context,
    (void (*)(void *, PRBool)) MD5_DestroyContext,
    (void (*)(void *)) MD5_Begin,
    (void (*)(void *, const unsigned char *, unsigned int)) MD5_Update,
    (void (*)(void *, unsigned char *, unsigned int *, unsigned int)) MD5_End,
    MD5_BLOCK_LENGTH,
    HASH_AlgMD5,
    (void (*)(void *, unsigned char *, unsigned int *, unsigned int)) MD5_EndRaw
  },
  { SHA1_LENGTH,
    (void * (*)(void)) SHA1_NewContext,
    (void * (*)(void *)) null_hash_clone_context,
    (void (*)(void *, PRBool)) SHA1_DestroyContext,
    (void (*)(void *)) SHA1_Begin,
    (void (*)(void *, const unsigned char *, unsigned int)) SHA1_Update,
    (void (*)(void *, unsigned char *, unsigned int *, unsigned int)) SHA1_End,
    SHA1_BLOCK_LENGTH,
    HASH_AlgSHA1,
    (void (*)(void *, unsigned char *, unsigned int *, unsigned int))
	SHA1_EndRaw
  },
  { SHA256_LENGTH,
    (void * (*)(void)) SHA256_NewContext,
    (void * (*)(void *)) null_hash_clone_context,
    (void (*)(void *, PRBool)) SHA256_DestroyContext,
    (void (*)(void *)) SHA256_Begin,
    (void (*)(void *, const unsigned char *, unsigned int)) SHA256_Update,
    (void (*)(void *, unsigned char *, unsigned int *,
	      unsigned int)) SHA256_End,
    SHA256_BLOCK_LENGTH,
    HASH_AlgSHA256,
    (void (*)(void *, unsigned char *, unsigned int *,
	      unsigned int)) SHA256_EndRaw
  },
  { SHA384_LENGTH,
    (void * (*)(void)) SHA384_NewContext,
    (void * (*)(void *)) null_hash_clone_context,
    (void (*)(void *, PRBool)) SHA384_DestroyContext,
    (void (*)(void *)) SHA384_Begin,
    (void (*)(void *, const unsigned char *, unsigned int)) SHA384_Update,
    (void (*)(void *, unsigned char *, unsigned int *,
	      unsigned int)) SHA384_End,
    SHA384_BLOCK_LENGTH,
    HASH_AlgSHA384,
    (void (*)(void *, unsigned char *, unsigned int *,
	      unsigned int)) SHA384_EndRaw
  },
  { SHA512_LENGTH,
    (void * (*)(void)) SHA512_NewContext,
    (void * (*)(void *)) null_hash_clone_context,
    (void (*)(void *, PRBool)) SHA512_DestroyContext,
    (void (*)(void *)) SHA512_Begin,
    (void (*)(void *, const unsigned char *, unsigned int)) SHA512_Update,
    (void (*)(void *, unsigned char *, unsigned int *,
	      unsigned int)) SHA512_End,
    SHA512_BLOCK_LENGTH,
    HASH_AlgSHA512,
    (void (*)(void *, unsigned char *, unsigned int *,
	      unsigned int)) SHA512_EndRaw
  },
  { SHA224_LENGTH,
    (void * (*)(void)) SHA224_NewContext,
    (void * (*)(void *)) null_hash_clone_context,
    (void (*)(void *, PRBool)) SHA224_DestroyContext,
    (void (*)(void *)) SHA224_Begin,
    (void (*)(void *, const unsigned char *, unsigned int)) SHA224_Update,
    (void (*)(void *, unsigned char *, unsigned int *,
	      unsigned int)) SHA224_End,
    SHA224_BLOCK_LENGTH,
    HASH_AlgSHA224,
    (void (*)(void *, unsigned char *, unsigned int *,
	      unsigned int)) SHA224_EndRaw
  },
};

const SECHashObject *
HASH_GetRawHashObject(HASH_HashType hashType)
{
    if (hashType < HASH_AlgNULL || hashType >= HASH_AlgTOTAL) {
	PORT_SetError(SEC_ERROR_INVALID_ARGS);
	return NULL;
    }
    return &SECRawHashObjects[hashType];
}