/*************************************************************************
* Copyright (C) 2022 Intel Corporation
*
* Licensed under the Apache License,  Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* 	http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law  or agreed  to  in  writing,  software
* distributed under  the License  is  distributed  on  an  "AS IS"  BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the  specific  language  governing  permissions  and
* limitations under the License.
*************************************************************************/

#include <internal/common/ifma_defs.h>
#include <internal/sm4/sm4_gcm_mb.h>

DLL_PUBLIC
mbx_status16 mbx_sm4_gcm_get_tag_mb16(int8u *pa_tag[SM4_LINES], const int tag_len[SM4_LINES], SM4_GCM_CTX_mb16 *p_context)
{
   int buf_no;
   mbx_status16 status = 0;
   __mmask16 mb_mask   = 0xFFFF;

   /* Test input pointers */
   if (NULL == pa_tag || NULL == tag_len || NULL == p_context) {
      status = MBX_SET_STS16_ALL(MBX_STATUS_NULL_PARAM_ERR);
      return status;
   }

   /* Check state */
   if (sm4_gcm_update_aad != SM4_GCM_CONTEXT_STATE(p_context) && sm4_gcm_start_encdec != SM4_GCM_CONTEXT_STATE(p_context) &&
       sm4_gcm_enc != SM4_GCM_CONTEXT_STATE(p_context) && sm4_gcm_dec != SM4_GCM_CONTEXT_STATE(p_context) &&
       sm4_gcm_get_tag != SM4_GCM_CONTEXT_STATE(p_context)) {

      status = MBX_SET_STS16_ALL(MBX_STATUS_MISMATCH_PARAM_ERR);
      return status;
   }

   /* Don't process buffers with input pointers equal to zero and set bad status for tags of invalid length */
   for (buf_no = 0; buf_no < SM4_LINES; buf_no++) {
      if (pa_tag[buf_no] == NULL) {
         status = MBX_SET_STS16(status, buf_no, MBX_STATUS_NULL_PARAM_ERR);
         mb_mask &= ~(0x1 << rearrangeOrder[buf_no]);
      }
      if (tag_len[buf_no] < 0 || tag_len[buf_no] > 16) {
         status = MBX_SET_STS16(status, buf_no, MBX_STATUS_MISMATCH_PARAM_ERR);
      }
   }

   if (MBX_IS_ANY_OK_STS16(status)) {
      sm4_gcm_get_tag_mb16(pa_tag, tag_len, mb_mask, p_context);
   }

   return status;
}
