sha384impl.c

IBE是一种非对称密码技术

/* Copyright 2005-2006, Voltage Security, all rights reserved.
 */
#include "vibecrypto.h"
#include "environment.h"
#include "base.h"
#include "libctx.h"
#include "algobj.h"
#include "digest.h"
#include "sha384.h"
#include "errorctx.h"

int SHA384Init (
   VoltAlgorithmObject *obj
   )
{
  int status;
  VoltDigestClassCtx *digestCtx = (VoltDigestClassCtx *)(obj->classCtx);
  VoltSHA384Ctx *ctx = (VoltSHA384Ctx *)(digestCtx->localDigestCtx);
  VOLT_DECLARE_FNCT_LINE (fnctLine)

  do
  {
    /* Call the SHA-512 Init.
     */
    VOLT_SET_FNCT_LINE (fnctLine)
      digestCtx = (VoltDigestClassCtx *)(ctx->sha512Obj->classCtx);
    status = digestCtx->DigestInit (ctx->sha512Obj);

  } while (0);

  VOLT_LOG_ERROR_INFO_COMPARE (
    status, 0, obj, status, 0, 0,
    (char *)0, "SHA384Init", fnctLine, (char *)0)

  return (status);
}

int SHA384Update (
   VoltAlgorithmObject *obj,
   unsigned char *dataToDigest,
   unsigned int dataToDigestLen
   )
{
  int status;
  VoltDigestClassCtx *digestCtx = (VoltDigestClassCtx *)(obj->classCtx);
  VoltSHA384Ctx *ctx = (VoltSHA384Ctx *)(digestCtx->localDigestCtx);
  VOLT_DECLARE_FNCT_LINE (fnctLine)

  do
  {
    /* Call the SHA-512 Update
     */
    VOLT_SET_FNCT_LINE (fnctLine)
    digestCtx = (VoltDigestClassCtx *)(ctx->sha512Obj->classCtx);
    status = digestCtx->DigestUpdate (
      ctx->sha512Obj, dataToDigest, dataToDigestLen);

  } while (0);

  VOLT_LOG_ERROR_INFO_COMPARE (
    status, 0, obj, status, 0, 0,
    (char *)0, "SHA384Update", fnctLine, (char *)0)

  return (status);
}

int SHA384Final (
   VoltAlgorithmObject *obj,
   unsigned char *digest
   )
{
  int status;
  VoltLibCtx *libCtx = (VoltLibCtx *)(obj->voltObject.libraryCtx);
  VoltDigestClassCtx *digestCtx = (VoltDigestClassCtx *)(obj->classCtx);
  VoltSHA384Ctx *ctx = (VoltSHA384Ctx *)(digestCtx->localDigestCtx);
  unsigned char digest512[64];
  VOLT_DECLARE_FNCT_LINE (fnctLine)

  do
  {
    /* Call the SHA-512 Final
     */
    VOLT_SET_FNCT_LINE (fnctLine)
    digestCtx = (VoltDigestClassCtx *)(ctx->sha512Obj->classCtx);
    status = digestCtx->DigestFinal (ctx->sha512Obj, digest512);
    if (status != 0)
      break;

    /* Copy the first 48 bytes of that result into the output buffer.
     */
    Z2Memcpy (digest, digest512, 48);

  } while (0);

  Z2Memset (digest512, 0, 64);

  VOLT_LOG_ERROR_INFO_COMPARE (
    status, 0, obj, status, 0, 0,
    (char *)0, "SHA384Final", fnctLine, (char *)0)

  return (status);
}