verify_mgr.c

IBM的Linux上的PKCS#11实现

#include "pkcs11types.h"
#include "defs.h"
#include "host_defs.h"
#include "h_extern.h"
#include "tok_spec_struct.h"


//
//
CK_RV
verify_mgr_init( SESSION             * sess,
                 SIGN_VERIFY_CONTEXT * ctx,
                 CK_MECHANISM        * mech,
                 CK_BBOOL              recover_mode,
                 CK_OBJECT_HANDLE      key )
{
   OBJECT          * key_obj = NULL;
   CK_ATTRIBUTE    * attr    = NULL;
   CK_BYTE         * ptr     = NULL;
   CK_KEY_TYPE       keytype;
   CK_OBJECT_CLASS   class;
   CK_BBOOL          flag;
   CK_RV             rc;


   if (!sess || !ctx){
      st_err_log(4, __FILE__, __LINE__, __FUNCTION__);
      return CKR_FUNCTION_FAILED;
   }
   if (ctx->active != FALSE){
      st_err_log(31, __FILE__, __LINE__);
      return CKR_OPERATION_ACTIVE;
   }

   // key usage restrictions
   //
   rc = object_mgr_find_in_map1( key, &key_obj );
   if (rc != CKR_OK){
      st_err_log(18, __FILE__, __LINE__);
      return CKR_KEY_HANDLE_INVALID;
   }
   // is key allowed to verify signatures?
   //
   rc = template_attribute_find( key_obj->template, CKA_VERIFY, &attr );
   if (rc == FALSE){
      st_err_log(20, __FILE__, __LINE__);
      return CKR_KEY_TYPE_INCONSISTENT;
   }
   else {
      flag = *(CK_BBOOL *)attr->pValue;
      if (flag != TRUE){
         st_err_log(85, __FILE__, __LINE__);
         return CKR_KEY_FUNCTION_NOT_PERMITTED;
      }
   }


   // is the mechanism supported?  is the key type correct?  is a
   // parameter present if required?  is the key size allowed?
   // is the key allowed to generate signatures?
   //
   switch (mech->mechanism) {
      case CKM_RSA_X_509:
      case CKM_RSA_PKCS:
         {
            if (mech->ulParameterLen != 0){
               st_err_log(29, __FILE__, __LINE__);
               return CKR_MECHANISM_PARAM_INVALID;
            }
            rc = template_attribute_find( key_obj->template, CKA_KEY_TYPE, &attr );
            if (rc == FALSE){
               st_err_log(20, __FILE__, __LINE__);
               return CKR_KEY_TYPE_INCONSISTENT;
            }
            else {
               keytype = *(CK_KEY_TYPE *)attr->pValue;
               if (keytype != CKK_RSA){
                  st_err_log(20, __FILE__, __LINE__);
                  return CKR_KEY_TYPE_INCONSISTENT;
               }
            }

            // must be a PUBLIC key operation
            //
            flag = template_attribute_find( key_obj->template, CKA_CLASS, &attr );
            if (flag == FALSE){
               st_err_log(4, __FILE__, __LINE__, __FUNCTION__);
               return CKR_FUNCTION_FAILED;
            }
            else
               class = *(CK_OBJECT_CLASS *)attr->pValue;

            if (class != CKO_PUBLIC_KEY){
               st_err_log(4, __FILE__, __LINE__, __FUNCTION__);
               return CKR_FUNCTION_FAILED;
            }
            // PKCS #11 doesn't allow multi-part RSA operations
            //
            ctx->context_len = 0;
            ctx->context     = NULL;
         }
         break;

      case CKM_MD2_RSA_PKCS:
      case CKM_MD5_RSA_PKCS:
      case CKM_SHA1_RSA_PKCS:
         {
            if (mech->ulParameterLen != 0){
               st_err_log(29, __FILE__, __LINE__);
               return CKR_MECHANISM_PARAM_INVALID;
            }
            rc = template_attribute_find( key_obj->template, CKA_KEY_TYPE, &attr );
            if (rc == FALSE){
               st_err_log(20, __FILE__, __LINE__);
               return CKR_KEY_TYPE_INCONSISTENT;
            }
            else {
               keytype = *(CK_KEY_TYPE *)attr->pValue;
               if (keytype != CKK_RSA){
                  st_err_log(20, __FILE__, __LINE__);
                  return CKR_KEY_TYPE_INCONSISTENT;
               }
            }

            // must be a PUBLIC key operation
            //
            flag = template_attribute_find( key_obj->template, CKA_CLASS, &attr );
            if (flag == FALSE){
               st_err_log(4, __FILE__, __LINE__, __FUNCTION__);
               return CKR_FUNCTION_FAILED;
            }
            else
               class = *(CK_OBJECT_CLASS *)attr->pValue;

            if (class != CKO_PUBLIC_KEY){
               st_err_log(4, __FILE__, __LINE__, __FUNCTION__);
               return CKR_FUNCTION_FAILED;
            }
            ctx->context_len = sizeof(RSA_DIGEST_CONTEXT);
            ctx->context     = (CK_BYTE *)malloc(sizeof(RSA_DIGEST_CONTEXT));
            if (!ctx->context){
               st_err_log(0, __FILE__, __LINE__);
               return CKR_HOST_MEMORY;
            }
            memset( ctx->context, 0x0, sizeof(RSA_DIGEST_CONTEXT));
         }
         break;

#if !(NODSA)
      case CKM_DSA:
         {
            if (mech->ulParameterLen != 0){
               st_err_log(29, __FILE__, __LINE__);
               return CKR_MECHANISM_PARAM_INVALID;
            }
            rc = template_attribute_find( key_obj->template, CKA_KEY_TYPE, &attr );
            if (rc == FALSE){
               st_err_log(20, __FILE__, __LINE__);
               return CKR_KEY_TYPE_INCONSISTENT;
            }
            else {
               keytype = *(CK_KEY_TYPE *)attr->pValue;
               if (keytype != CKK_DSA){
                  st_err_log(20, __FILE__, __LINE__);
                  return CKR_KEY_TYPE_INCONSISTENT;
               }
            }

            // must be a PUBLIC key operation
            //
            flag = template_attribute_find( key_obj->template, CKA_CLASS, &attr );
            if (flag == FALSE){
               st_err_log(4, __FILE__, __LINE__, __FUNCTION__);
               return CKR_FUNCTION_FAILED;
            }
            else
               class = *(CK_OBJECT_CLASS *)attr->pValue;

            if (class != CKO_PUBLIC_KEY){
               st_err_log(4, __FILE__, __LINE__, __FUNCTION__);
               return CKR_FUNCTION_FAILED;
            }
            // PKCS #11 doesn't allow multi-part DSA operations
            //
            ctx->context_len = 0;
            ctx->context     = NULL;
         }
         break;
#endif

      case CKM_MD2_HMAC:
      case CKM_MD5_HMAC:
      case CKM_SHA_1_HMAC:
         {
            if (mech->ulParameterLen != 0){
               st_err_log(29, __FILE__, __LINE__);
               return CKR_MECHANISM_PARAM_INVALID;
            }
            rc = template_attribute_find( key_obj->template, CKA_KEY_TYPE, &attr );
            if (rc == FALSE){
               st_err_log(20, __FILE__, __LINE__);
               return CKR_KEY_TYPE_INCONSISTENT;
            }
            else {
               keytype = *(CK_KEY_TYPE *)attr->pValue;
               if (keytype != CKK_GENERIC_SECRET){
                  st_err_log(20, __FILE__, __LINE__);
                  return CKR_KEY_TYPE_INCONSISTENT;
               }
            }

            // PKCS #11 doesn't allow multi-part HMAC operations
            //
            ctx->context_len = 0;
            ctx->context     = NULL;
         }
         break;

      case CKM_MD2_HMAC_GENERAL:
      case CKM_MD5_HMAC_GENERAL:
      case CKM_SHA_1_HMAC_GENERAL:
         {
            CK_MAC_GENERAL_PARAMS *param = (CK_MAC_GENERAL_PARAMS *)mech->pParameter;

            if (mech->ulParameterLen != sizeof(CK_MAC_GENERAL_PARAMS)){
               st_err_log(29, __FILE__, __LINE__);
               return CKR_MECHANISM_PARAM_INVALID;
            }
            if ((mech->mechanism == CKM_MD2_HMAC_GENERAL) && (*param > 16)){
               st_err_log(29, __FILE__, __LINE__);
               return CKR_MECHANISM_PARAM_INVALID;
            }
            if ((mech->mechanism == CKM_MD5_HMAC_GENERAL) && (*param > 16)){
               st_err_log(29, __FILE__, __LINE__);
               return CKR_MECHANISM_PARAM_INVALID;
            }
            if ((mech->mechanism == CKM_SHA_1_HMAC_GENERAL) && (*param > 20)){
               st_err_log(29, __FILE__, __LINE__);
               return CKR_MECHANISM_PARAM_INVALID;
            }
            rc = template_attribute_find( key_obj->template, CKA_KEY_TYPE, &attr );
            if (rc == FALSE){
               st_err_log(20, __FILE__, __LINE__);
               return CKR_KEY_TYPE_INCONSISTENT;
            }
            else {
               keytype = *(CK_KEY_TYPE *)attr->pValue;
               if (keytype != CKK_GENERIC_SECRET){
                  st_err_log(20, __FILE__, __LINE__);
                  return CKR_KEY_TYPE_INCONSISTENT;
               }
            }

            // PKCS #11 doesn't allow multi-part HMAC operations
            //
            ctx->context_len = 0;
            ctx->context     = NULL;
         }
         break;

      case CKM_SSL3_MD5_MAC:
      case CKM_SSL3_SHA1_MAC:
         {
            CK_MAC_GENERAL_PARAMS *param = (CK_MAC_GENERAL_PARAMS *)mech->pParameter;

            if (mech->ulParameterLen != sizeof(CK_MAC_GENERAL_PARAMS)){
               st_err_log(29, __FILE__, __LINE__);
               return CKR_MECHANISM_PARAM_INVALID;
            }
            // Netscape sets the parameter == 16.  PKCS #11 limit is 8
            //
            if (mech->mechanism == CKM_SSL3_MD5_MAC) {
               if (*param < 4 || *param > 16){
                  st_err_log(29, __FILE__, __LINE__);
                  return CKR_MECHANISM_PARAM_INVALID;
               }
            }

            if (mech->mechanism == CKM_SSL3_SHA1_MAC) {
               if (*param < 4 || *param > 20){
                  st_err_log(29, __FILE__, __LINE__);
                  return CKR_MECHANISM_PARAM_INVALID;
               }
            }

            rc = template_attribute_find( key_obj->template, CKA_CLASS, &attr );
            if (rc == FALSE){
               st_err_log(20, __FILE__, __LINE__);
               return CKR_KEY_TYPE_INCONSISTENT;
            }
            else {
               class = *(CK_OBJECT_CLASS *)attr->pValue;
               if (class != CKO_SECRET_KEY){
                  st_err_log(20, __FILE__, __LINE__);
                  return CKR_KEY_TYPE_INCONSISTENT;
               }
            }

            ctx->context_len = sizeof(SSL3_MAC_CONTEXT);
            ctx->context     = (CK_BYTE *)malloc(sizeof(SSL3_MAC_CONTEXT));