tdeskey.c

来自「IBE是一种非对称密码技术」· C语言 代码 · 共 80 行

/* Copyright 2003-2006, Voltage Security, all rights reserved.
 */
#include "vibecrypto.h"
#include "environment.h"
#include "base.h"
#include "libctx.h"
#include "keyobj.h"
#include "des.h"
#include "errorctx.h"

/* Implements VCheckKeyLen.
 */
int VOLT_CALLING_CONV TDESCheckKeyLen VOLT_PROTO_LIST ((
   VtLibCtx libraryCtx,
   unsigned int keyLen
   ));

int VtKeyParamTripleDES (
   VtKeyObject object,
   Pointer info,
   unsigned int flag
   )
{
  int status;
  VoltKeyObject *obj = (VoltKeyObject *)object;
  VOLT_DECLARE_FNCT_LINE (fnctLine)

  do
  {
    if (flag == VOLT_KEY_GET_TYPE_FLAG)
    {
      VOLT_SET_FNCT_LINE (fnctLine)
      status = VoltGetSymmetricKey (
        object, (Pointer *)info, VOLT_KEY_ALG_3_DES);
      break;
    }

    VOLT_SET_FNCT_LINE (fnctLine)
    status = VoltSetSymmetricKey (
      object, info, flag, TDESCheckKeyLen,
      VOLT_KEY_ALG_3_DES | VOLT_KEY_TYPE_DATA);
    if (status != 0)
      break;

    VoltSetDESParity ((VtItem *)(obj->keyData));

    /* If successful, set the FIPS bit in the object type, this object
     * is a FIPS object.
     */
    ((VoltObject *)object)->objectType |= VOLT_OBJECT_TYPE_FIPS;

  } while (0);

  VOLT_LOG_ERROR_COMPARE (
    status, ((VoltObject *)object)->libraryCtx, status, 0, fnctLine,
    "VtKeyParamTripleDES", (char *)0)

    return (status);
}

int TDESCheckKeyLen (
   VtLibCtx libraryCtx,
   unsigned int keyLen
   )
{
  VOLT_DECLARE_FNCT_LINE (fnctLine)

  /* A Triple DES key can only be 24 bytes long.
   */
  VOLT_SET_FNCT_LINE (fnctLine)
  if (keyLen == 24)
    return (0);

  VOLT_LOG_ERROR (
    libraryCtx, VT_ERROR_INVALID_KEY_LENGTH, VT_ERROR_TYPE_PRIMARY,
    fnctLine, "TDESCheckKeyLen", (char *)0)

  return (VT_ERROR_INVALID_KEY_LENGTH);
}