drivers/staging/greybus/greybus_authentication.h

   1 /* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
   2 /*
   3  * Greybus Component Authentication User Header
   4  *
   5  * Copyright(c) 2016 Google Inc. All rights reserved.
   6  * Copyright(c) 2016 Linaro Ltd. All rights reserved.
   7  */
   8
   9 #ifndef __GREYBUS_AUTHENTICATION_USER_H
  10 #define __GREYBUS_AUTHENTICATION_USER_H
  11
  12 #include <linux/ioctl.h>
  13 #include <linux/types.h>
  14
  15 #define CAP_CERTIFICATE_MAX_SIZE        1600
  16 #define CAP_SIGNATURE_MAX_SIZE          320
  17
  18 /* Certificate class types */
  19 #define CAP_CERT_IMS_EAPC               0x00000001
  20 #define CAP_CERT_IMS_EASC               0x00000002
  21 #define CAP_CERT_IMS_EARC               0x00000003
  22 #define CAP_CERT_IMS_IAPC               0x00000004
  23 #define CAP_CERT_IMS_IASC               0x00000005
  24 #define CAP_CERT_IMS_IARC               0x00000006
  25
  26 /* IMS Certificate response result codes */
  27 #define CAP_IMS_RESULT_CERT_FOUND       0x00
  28 #define CAP_IMS_RESULT_CERT_CLASS_INVAL 0x01
  29 #define CAP_IMS_RESULT_CERT_CORRUPT     0x02
  30 #define CAP_IMS_RESULT_CERT_NOT_FOUND   0x03
  31
  32 /* Authentication types */
  33 #define CAP_AUTH_IMS_PRI                0x00000001
  34 #define CAP_AUTH_IMS_SEC                0x00000002
  35 #define CAP_AUTH_IMS_RSA                0x00000003
  36
  37 /* Authenticate response result codes */
  38 #define CAP_AUTH_RESULT_CR_SUCCESS      0x00
  39 #define CAP_AUTH_RESULT_CR_BAD_TYPE     0x01
  40 #define CAP_AUTH_RESULT_CR_WRONG_EP     0x02
  41 #define CAP_AUTH_RESULT_CR_NO_KEY       0x03
  42 #define CAP_AUTH_RESULT_CR_SIG_FAIL     0x04
  43
  44
  45 /* IOCTL support */
  46 struct cap_ioc_get_endpoint_uid {
  47         __u8                    uid[8];
  48 } __attribute__ ((__packed__));
  49
  50 struct cap_ioc_get_ims_certificate {
  51         __u32                   certificate_class;
  52         __u32                   certificate_id;
  53
  54         __u8                    result_code;
  55         __u32                   cert_size;
  56         __u8                    certificate[CAP_CERTIFICATE_MAX_SIZE];
  57 } __attribute__ ((__packed__));
  58
  59 struct cap_ioc_authenticate {
  60         __u32                   auth_type;
  61         __u8                    uid[8];
  62         __u8                    challenge[32];
  63
  64         __u8                    result_code;
  65         __u8                    response[64];
  66         __u32                   signature_size;
  67         __u8                    signature[CAP_SIGNATURE_MAX_SIZE];
  68 } __attribute__ ((__packed__));
  69
  70 #define CAP_IOCTL_BASE                  'C'
  71 #define CAP_IOC_GET_ENDPOINT_UID        _IOR(CAP_IOCTL_BASE, 0, struct cap_ioc_get_endpoint_uid)
  72 #define CAP_IOC_GET_IMS_CERTIFICATE     _IOWR(CAP_IOCTL_BASE, 1, struct cap_ioc_get_ims_certificate)
  73 #define CAP_IOC_AUTHENTICATE            _IOWR(CAP_IOCTL_BASE, 2, struct cap_ioc_authenticate)
  74
  75 #endif /* __GREYBUS_AUTHENTICATION_USER_H */