/* SPDX-License-Identifier: GPL-2.0 */
  /*
   * Copyright (C) 2018 NXP.
   *
   */
  
  #ifndef _KEYS_SECURE_TYPE_H
  #define _KEYS_SECURE_TYPE_H
  
  #include <linux/key.h>
  #include <linux/rcupdate.h>
  
  /* Minimum key size to be used is 32 bytes and maximum key size fixed
   * is 128 bytes.
   * Blob size to be kept is Maximum key size + blob header added by CAAM.
   */
  
  #define MIN_KEY_SIZE                    32
  #define MAX_KEY_SIZE                    128
  #define BLOB_HEADER_SIZE		48
  
  #define MAX_BLOB_SIZE                   (MAX_KEY_SIZE + BLOB_HEADER_SIZE)
  
  struct secure_key_payload {
  	struct rcu_head rcu;
  	unsigned int key_len;
  	unsigned int blob_len;
  	unsigned char key[MAX_KEY_SIZE + 1];
  	unsigned char blob[MAX_BLOB_SIZE];
  };
  
  extern struct key_type key_type_secure;
  #endif